Endel

EndelPersonalized soundscapes to help you focus, relax, and sleep. Backed by neuroscience.Try TodayRelaxCalms your mind to create feelings of comfort and safetyLearn More↗FocusBoosts your productivity by helping you concentrate for longerLearn More↗SleepSoothes you into a deep sleep with soft, gentle soundsLearn More↗ActivityPowers your movement with sounds to keep you present and groundedLearn More↗Backed by neuroscienceOur patented technology creates soundscapes that adapt in real-time. It reacts to inputs like time of day, weather, heart rate, and location. Neuroscience shows Endel consistently improves focus and lowers stress.for increasing focus vs playlists1increase in focus1decrease in stress with regular use2Longer, more consistent focus; maintained 95% of listening time21) *Read the Whitepaper on Bioarxiv↗2) Survey methodology: The Experience Sampling Method provided by Mihaly Csikszentmihalyi (Professor of Psychology and Management at Claremont Graduate University, author of the best-selling book Flow)Endel Mobile app. Sound wellness anywhere.With over 4 million downloads, our award-winning app for iOS and Android puts powerful wellness and productivity tools in the palm of your hand.Real-time personalized soundscapesFocus, relax, and sleep with personalized sounds that adapt to you and your environment in real-time. Each with their own generative visual to help put you in the right state of mind. Try Now↗Round-the-clock sound with AutoplayAutoplay automatically chooses the perfect soundscape for your current state. Whether it’s your morning productivity peak, or an early-evening time-out, Endel supports you with Focus, Relax, or Sleep. Just press start.Try Now↗Endel for Apple Watch. A wearable award winner.Endless soundscapes on the go, in an award-winning format. Taking our patented tech down to watch size made Endel the winner of Apple Watch App of the Year 2020.Detailed personal inputsUsing accurate heart rate sensors, light intake and other biometric data makes Endel’s Apple Watch soundscapes intricately personalized and increasingly effective.Try Now↗Keep your phone at homeGo anywhere with soundscapes on your wrist. Working independently from the iPhone, the Apple Watch app is a standalone product that generates endlessly supporting sound on the fly.Try Now↗Endel for Amazon Alexa. Just a phrase away.Includes Echo devices, Fire Tablets, Fire TV, Alexa Auto, and the Alexa App. No installation needed, just say “Alexa, start Endel”.Screen-free sleep with smart speakersMake your bedroom a screen-free sleep sanctuary. Just say “Alexa, start Sleep with Endel” and be prepared for drift-off. With Routines, Timers, and Smart Alarms, you can automate your way to a better night’s sleep.Try Now↗Automate your day with RoutineEndel soundscapes work with Alexa Routines, meaning it can automatied to make your life more convenient. Example? You can use a phrase like “Start Bedtime Routine” to dim your smart lights and activate the Sleep soundscape. Try Now↗Endel for TV. Wellness on fullscreen.Transform your TV into a tool for wellness with the Endel for Apple TV and Amazon Fire TV. Chill to big-screen animations from your favorite soundscapes with any Amazon Fire TV device. Or unwind after a long day with James Blake: Wind Down on Apple TV.Endel on desktop. Work, rest, and play.Create a special place for productivity with the desktop Endel app. Get a boost of up to 7x increase in sustained Focus with our scientifically-validated soundscapes.Endel for MacFast, efficient, and designed to minimize distractions. Endel for Mac comes with a streamlined and discreet interface, helping you to stay focused on the task at hand.Try Now↗Endel web playerAll your favorite Endel soundscapes, from the convenience of your browser. Enjoy Endel at work, school, or wherever. All sounds are generated in real-time, along with their signature visuals. Try Now↗Endel on streaming platformsListen to albums, singles, and playlists from Endel on your favorite streaming platform, including collaborations with top artists like James Blake and Ta-ku. Created using Endel’s patented technology, these releases might not be personalized or adaptive, but are a great way to enjoy the science-backed sound of Endel wherever you are.Appreciated by experts. Enjoyed by millions.Endel users across the globe are improving their physical and mental wellbeing with the power of sound.Apple WatchApp of the Year 2020App StoreEditors' ChoiceGoogle PlayBest of 2021Product HuntGolden Kitty 2022Microsoft Store Awards2024: Rising StarDr RTL★★★★★Most Frequently Used AppAs a professor, an author, and a consultant, maintaining balance and focus are key to me. A full night sleeping is pretty important, too. I find myself using this app multiple times throughout the day to help with my productivity and at night to help with peaceful sleeping. It has become an critical component for helping maintain my productivity levels.Dakoda88★★★★★I have never write a review and felt compelled to tell you this app is incredible. After the first two nights of sleeping with Endel I woke up more calm and remained that way for a lot of the day. The hibernation setting is great for chilling at night before bed. Then switch to the sleep setting. It is really weird to me that this is able to have such an impact on my actual life just using sound. 🤩wanbunga★★★★★Helps with my ADHD brain and insomniaAll I can say is - wow. I used the app for the first time last night after really struggling to sleep, saw the ad and downloaded it (I usually ignore ads but for some reason the ad on this app really caught my pique). I love how minimal but unique the application is. The moving patterns are beautiful as well. I managed to sleep immediately yesterday and I actually played it throughout the night and had a wonderful night sleep. It helped calm my racing thoughts at night and I was surprised at how easy it was to fall asleep.Svtton W★★★★★Highly skeptical, made me a believerI am highly skeptical of anything making claims like this app does, but I tried it and I'm actually blown away to the point where I HAD to leave a review, which I almost never do. I thought best case scenario it may help with my sleep but I was sure it would be minimal or the difference wouldn't be noticeable, but both me and my girl have used it falling asleep for a couple nights in a row now, and all I can say is wow. Fall asleep faster, stay asleep longer, wake up feeling GREAT, and the difference we have felt is truly measurable and more than noticeable, it's profound. Well doneGrzgrzgrx★★★★★It's like your drawn to sleep by some magical spell, that you cannot resist.Dakoda88★★★★★After the first two nights of sleeping with Endel I woke up more calm and remained that way for a lot of the day.bookworm101254★★★★★What's wrong with it?I have always had a hard time sleeping, and with me being anemic it makes it harder, and the first time I tried this I had such a good night of sleep! I woke up even before my alarm! I recommend it to anyone and everyone! This app works miracles!biz/study-guy★★★★★Perfect sleep soundThe sleep sound is perfect. Sleep sounds never work for me, they always end up being more of a distraction. This however is perfect. It starts with a gentle tune to que your brain to relax then proceeds to a very soft white noise—loud enough to break the silence but quiet enough that you don't notice it. It's quite remarkable. My seven year old daughter also sleeps better with this. I highly recommend it for this feature alone. But the Move soundscape is also quite incredible—great for walks when you need to get yourself grounded and centered.Vonnie&elissaMyfamilyis★★★★★I have major Sleeping issues but I got Endel. It really helps Me a lot!Show MoreJoin Endel Bubble on Discord.You'll gain access to exclusive previews, beta versions, pro tips on using the app, AMA's with the Endel team, and a lot more!About CommunityFAQWhat is the difference between Soundscapes and Scenarios? The Endel app has two main forms of audio content — Soundscapes and Scenarios. Soundscapes are endlessly generated on the device following your local inputs — weather, time of day, cadence of your walks, and heart rate (if you’re wearing your Apple Watch), and others.Learn more about the inputs.Scenarios are sound sessions with predefined logic (initial, middle, and end phases are defined and pre-generated for the timer you set). They are designed to be used for a particular task or life occasion in a timed session.Is Endel sound tuned to 432kHz? The Endel's sound is tuned to 440 hertz. It's the so-called natural order, where the relationships between the intervals are as simple for the brain to process as possible. According to research, it helps reduce the cognitive load in perceiving musical information.Does Endel use binaural beats? There is a Binaural Beats Scenario in the app. The other sounds don’t use this technology. Binaural waves at the physical level work exclusively in stereo headphones, make sure you wear them when you use the Binaural Beats Scenario.I need help with Endel. How can I get it? If you have any issues with the Endel app function or with your subscription or have any questions about Endel, you can contact our support via a form in the app or by reaching out to us: ask@endel.io.Why do I need to buy a subscription for Endel? Paid subscription model is a necessary format for us to keep maintaining and developing Endel continually. The subscription price includes our work on updates — not only do we fix bugs and improve our products’ technical performance gradually, but also consistently add new sounds, features, and user experience improvements, based on user research and with the best interest of the Endel community in mind.Do I need to follow the circadian and ultradian cycles? The circadian and ultradian cycles are scientifically backed theories of daily energy levels. In an ideal situation, it would be advisable to follow the rhythms: rest on low phases, and be active on high phases of the cycles. But it is hard to accommodate in modern everyday life. Which is why the Endel app can also help you mitigate the negative influence of the cycles with sound.For example, when you play Focus during a low period of the circadian cycle, you’ll notice that the sound is still stimulating for concentration, but not as intense and driving as during the highs, to help you ease into the work you need to do at that moment, instead of pushing you too hard.How effective is Endel? Millions of happy users and their feedback in endless reviews and messages attest to the efficiency of Endel’s sound. However, sound perception is a very subjective matter, and we fully admit that Endel may not work for everyone in the same way. We base all of our Soundscapes and Scenarios design on scientific research, and there is peer-reviewed research that backs the efficiency of Endel’s sound compared to playlists and silence. For more information on the science behind Endel’s sound, go here.Is Endel scientifically proven? All Endel Soundscapes and Scenarios are based on scientific research around sound, neuroscience and Circadian science, and there is a peer-reviewed study that backs the efficiency of Endel’s sound compared to playlists and silence. For more information on the science behind Endel’s sound, go here. --- AboutEndel is a sound wellness company headquartered in Berlin. Founded by a collective of imaginative developers and artists, Endel is democratizing wellness by making it accessible to all. Endel runs a cross-platform ecosystem of AI-powered apps that create personalized, functional soundscapes to help people focus, relax, and sleep. Endel’s patented technology takes inputs from the user's movement, time of day, weather, heart rate, location, and other factors. It then uses AI to generate personalized soundscapes that adapt to changes in real-time.Endel is available on iOS, Android, Mac, Amazon Alexa, wearables, Apple TV, and as album releases on streaming platforms. The ecosystem has over 1 million active users monthly, and they listen to a million and a half hours a month. Endel partnered with Mercedes-Benz Group Research, All Nippon Airways, Nura, Oura, and others.In 2020, Endel became the Apple Watch App of the Year and recently received a Google Play Best of 2021 award.Investors and PartnersAmazon Alexa FundVC funding for voice tech innovationAvex GroupJapanese entertainment giantChris LeacockJillionaire, Major LazerKima VenturesInternational Angel investment firmLa FleurWorld-famous DJPlus Eight Equity PartnersAdvisors include DJs Richie Hawtin and Pete TongSupermoon CapitalSpecialist platform helping visionary foundersTarget GlobalVenture capital firm headquartered in BerlinTechstars MusicAccelerator program supported by global music businessTrue VenturesSilicon Valley-based venture capital firmWaverley CapitalThe Leader in Media Focused Venture CapitalPowerhouse CapitalGlobal Media & Technology VC powered by Los Angeles --- Sonic support tuned for ADHD brainsExplore the most complete collection of trusted tools for versatile attention challenges—all in one app. Tune out distractions, recharge when you need it, and focus without the fight.Try TodayActive Aid SoundscapesOn top of the library of science-backed background Soundscapes, Endel offers three tools for active sonic self-care, loved by ADHDers all over the worldSolfeggio TonesEase overstimulation and settle your mind with time-tested frequenciesTry Solfeggio Tones↗8D OdysseyUse modern sound design techniques to soothe your mindTry 8D Odyssey↗Colored NoiseTune out brain chatter and outside distractions with steady noiseTry Colored Noise↗Endel ExercisesCreate a good habit of using guided exercises to instantly refocus, soothe your mind, and strengthen mental resilience over timeBreathworkFocus BoostBox breathing for a calm, focused state of mindTry Now↗MeditationCalming TapsSoothe an overstimulated mind and release body tensionTry Now↗MeditationAnxiety ReliefSensory cues and guided breathing to ease anxietyTry Now↗BreathworkInstant CalmBreathing exercise to help you unwindTry Now↗MeditationBody ScanProgressive muscle relaxation to lower stressTry Now↗Attention TrainingMoving FocusImprove attention span by tracking a moving objectTry Now↗Attention TrainingActive ListeningTrain attention by focusing on parts of a soundscapeTry Now↗Timed Scenarios, and more...Cut out distractions. Stay on track. Make your breaks count.Quick TaskSet your time frame to clear out distractions and get things doneTry Now↗Binaural Beats40Hz Gamma waves to boost your brainpower before big tasks. Use with stereo headphones for full effectTry Now↗Deep WorkGet into flow state and tackle your to-do listTry Now↗ReadBe immersed in the written wordTry Now↗App BlockerGet your attention back while you use Endel. Block distracting apps and enjoy a break from checking your phone.Try App Blocker↗Focus TimerBreak your work into easy chunks with Focus Timer, based on the Pomodoro technique and enhanced with Endel sound. Use Task Headline to keep your goals in sight. Write it down, set your work-rest intervals, and get it done.Try Focus Timer↗Backed by neuroscienceOur patented technology creates soundscapes that adapt in real-time. It reacts to inputs like time of day, weather, heart rate, and location. Neuroscience shows Endel consistently improves focus and lowers stress.for increasing focus vs playlists1increase in focus1decrease in stress with regular use2Longer, more consistent focus; maintained 95% of listening time21) *Read the Whitepaper on Bioarxiv↗2) Survey methodology: The Experience Sampling Method provided by Mihaly Csikszentmihalyi (Professor of Psychology and Management at Claremont Graduate University, author of the best-selling book Flow)Millions of ADHDers worldwide trust EndelApple WatchApp of the Year 2020App StoreEditors' ChoiceGoogle PlayBest of 2021Product HuntGolden Kitty 2022Microsoft Store Awards2024: Rising StarWowsers808★★★★★Great for ADHD folks who need simplicityGranted, I almost exclusively use this during work hours to get me off Spotify and have a melodic, continuous soundscape just playing away.Leilamodel★★★★★The most euphoric appAs an ADHD person, it really hard to retain my attention and keep me focused! Endel got your back to ensure, you’re on natural dopamine.karenjoan★★★★★Great for adhd productivityAs a person with adhd, I may be bouncing a ball/texting/googling/doing random chores/looking out the window etc etc sporadically when I work, flipping from focused to distracted multiple times an hour. With Endel, I am completely focused and I can hardly believe it!!@Ian Lund★★★★★If Adderall was audioI have unmedicated ADHD and these soundscapes transformed my day. I am able to focus for longer and I feel like I have energy for all my tasks.... Highly recommend.BaWa298★★★★★Helps a lot when you have adhdThe 852hz "mode" is absolutely fantastic. Now I know, how it feels to be concentrated. While I'm listening to this frequency, all I'm hearing, seeing and feeling is the moment itself.Michael Oakvik★★★★★My life is so much better nowBeing able to live life with ADHD under control and also being on top of living life and being the best me i can be now. thanks10 out of 10★★★★★Bonus points for ADHD merch!As someone who struggles with ADHD and can’t find a way to shut my brain off this app is a lifesaver! It has helped me reach deep states of relaxation, focus better than ever, and sleep so deeply and restfully.HaddFun★★★★★SO HELPFUL!!Absolutely loving it! I have major ADHD and I get paralyzed when I'm too overwhelmed w a lot of tasks... this seriously puts me in a flow and keeps me moving! Highly recommended!Kelly in DE★★★★★No annoying New Age musicThese are just sounds that don’t annoy and are customizable. They are usually light and beautiful without the random jarring interrupting of a drum or cymbal etc….or a squawking bird in a rainforest. Worth the money and I’ll be using this app instead of the calm app. I am a 54 woman with ADHD and two school aged daughters.Show MoreFAQWhat is the difference between Soundscapes and Scenarios? The Endel app has two main forms of audio content — Soundscapes and Scenarios. Soundscapes are endlessly generated on the device following your local inputs — weather, time of day, cadence of your walks, and heart rate (if you’re wearing your Apple Watch), and others.Learn more about the inputs.Scenarios are sound sessions with predefined logic (initial, middle, and end phases are defined and pre-generated for the timer you set). They are designed to be used for a particular task or life occasion in a timed session.Is Endel sound tuned to 432kHz? The Endel's sound is tuned to 440 hertz. It's the so-called natural order, where the relationships between the intervals are as simple for the brain to process as possible. According to research, it helps reduce the cognitive load in perceiving musical information.Does Endel use binaural beats? There is a Binaural Beats Scenario in the app. The other sounds don’t use this technology. Binaural waves at the physical level work exclusively in stereo headphones, make sure you wear them when you use the Binaural Beats Scenario.I need help with Endel. How can I get it? If you have any issues with the Endel app function or with your subscription or have any questions about Endel, you can contact our support via a form in the app or by reaching out to us: ask@endel.io.Why do I need to buy a subscription for Endel? Paid subscription model is a necessary format for us to keep maintaining and developing Endel continually. The subscription price includes our work on updates — not only do we fix bugs and improve our products’ technical performance gradually, but also consistently add new sounds, features, and user experience improvements, based on user research and with the best interest of the Endel community in mind.Do I need to follow the circadian and ultradian cycles? The circadian and ultradian cycles are scientifically backed theories of daily energy levels. In an ideal situation, it would be advisable to follow the rhythms: rest on low phases, and be active on high phases of the cycles. But it is hard to accommodate in modern everyday life. Which is why the Endel app can also help you mitigate the negative influence of the cycles with sound.For example, when you play Focus during a low period of the circadian cycle, you’ll notice that the sound is still stimulating for concentration, but not as intense and driving as during the highs, to help you ease into the work you need to do at that moment, instead of pushing you too hard.How effective is Endel? Millions of happy users and their feedback in endless reviews and messages attest to the efficiency of Endel’s sound. However, sound perception is a very subjective matter, and we fully admit that Endel may not work for everyone in the same way. We base all of our Soundscapes and Scenarios design on scientific research, and there is peer-reviewed research that backs the efficiency of Endel’s sound compared to playlists and silence. For more information on the science behind Endel’s sound, go here.Is Endel scientifically proven? All Endel Soundscapes and Scenarios are based on scientific research around sound, neuroscience and Circadian science, and there is a peer-reviewed study that backs the efficiency of Endel’s sound compared to playlists and silence. For more information on the science behind Endel’s sound, go here. --- Fall sound asleep with EndelWind down, drift off, and wake up refreshed. Improve your sleep using power of sound with the Endel apps for iOS, Android, macOS, Apple Watch, Amazon Alexa, and Apple TV.Try TodayKnow your energy cycles, get recommendations, browse sounds, and moreEndel creates endless, personalized sounds to help you focus, relax, and sleepWake up relaxed and refreshed with Endel’s gradual-waking Smart AlarmSleep, by sleep scientistsEndel uses the science behind sleep, circadian rhythm, and psychoacoustics – working with top sleep experts like SleepScore Labs to create our soundscapes.Learn More↗How Endel worksSpecial sound triggers train your mind to prepare for sleep. Then masking, nature sounds, and colored noise to keep you undisturbed in a deep sleep.Learn More↗Sounds for every sleeper.Create the perfect sound environment for every part of sleep — from evening to morning, and afternoon naps.Sleep by EndelOur classic soundscape promotes fast, deep, undisturbed sleepTry Now↗Hibernation by EndelNourish your ears with cozy sounds for cold-season slumberTry Now↗Rainy Outside by EndelCozy up to the gentle patter of rain, blended with sleep-aiding soundsTry Now↗Endel × ArtistsExclusive sounds from visionary artists paired with Endel’s science‑backed technology.Grimes: AI LullabySupports sleep for babies and adults. Original sounds and vocals from GrimesLearn More↗James Blake: Wind DownPrepare your body for sleep with soothing sounds from an award-winning artistTry Now↗Timed ScenariosOptimized to help you with specific activities, Scenarios are directed and timed sound experiences.Baby SleepSleep sounds for bundles of joyTry Now↗Power NapRecharge your betteries with a timed napTry Now↗Turn your TV into a wellness toolTransform your living room into a sleep sanctuary with the Endel app for Apple TV. Switch to Endel after watching your favorite show and let Wind Down begin.Join the sound wellness revolutionEndel is science-backed, but more importantly, it’s people-proven. Endel users across the globe are super-powering their sleep with the power of sound.Apple WatchApp of the Year 2020App StoreEditors' ChoiceGoogle PlayBest of 2021Product HuntGolden Kitty 2022Microsoft Store Awards2024: Rising StarDr RTL★★★★★Most Frequently Used AppAs a professor, an author, and a consultant, maintaining balance and focus are key to me. A full night sleeping is pretty important, too. I find myself using this app multiple times throughout the day to help with my productivity and at night to help with peaceful sleeping. It has become an critical component for helping maintain my productivity levels.Dakoda88★★★★★I have never write a review and felt compelled to tell you this app is incredible. After the first two nights of sleeping with Endel I woke up more calm and remained that way for a lot of the day. The hibernation setting is great for chilling at night before bed. Then switch to the sleep setting. It is really weird to me that this is able to have such an impact on my actual life just using sound. 🤩wanbunga★★★★★Helps with my ADHD brain and insomniaAll I can say is - wow. I used the app for the first time last night after really struggling to sleep, saw the ad and downloaded it (I usually ignore ads but for some reason the ad on this app really caught my pique). I love how minimal but unique the application is. The moving patterns are beautiful as well. I managed to sleep immediately yesterday and I actually played it throughout the night and had a wonderful night sleep. It helped calm my racing thoughts at night and I was surprised at how easy it was to fall asleep.Svtton W★★★★★Highly skeptical, made me a believerI am highly skeptical of anything making claims like this app does, but I tried it and I'm actually blown away to the point where I HAD to leave a review, which I almost never do. I thought best case scenario it may help with my sleep but I was sure it would be minimal or the difference wouldn't be noticeable, but both me and my girl have used it falling asleep for a couple nights in a row now, and all I can say is wow. Fall asleep faster, stay asleep longer, wake up feeling GREAT, and the difference we have felt is truly measurable and more than noticeable, it's profound. Well doneGrzgrzgrx★★★★★It's like your drawn to sleep by some magical spell, that you cannot resist.Dakoda88★★★★★After the first two nights of sleeping with Endel I woke up more calm and remained that way for a lot of the day.bookworm101254★★★★★What's wrong with it?I have always had a hard time sleeping, and with me being anemic it makes it harder, and the first time I tried this I had such a good night of sleep! I woke up even before my alarm! I recommend it to anyone and everyone! This app works miracles!biz/study-guy★★★★★Perfect sleep soundThe sleep sound is perfect. Sleep sounds never work for me, they always end up being more of a distraction. This however is perfect. It starts with a gentle tune to que your brain to relax then proceeds to a very soft white noise—loud enough to break the silence but quiet enough that you don't notice it. It's quite remarkable. My seven year old daughter also sleeps better with this. I highly recommend it for this feature alone. But the Move soundscape is also quite incredible—great for walks when you need to get yourself grounded and centered.Vonnie&elissaMyfamilyis★★★★★I have major Sleeping issues but I got Endel. It really helps Me a lot!Show MoreBetter sleep starts hereEndel is science-backed, but more importantly, it’s people-proven. Endel users across the globe are super-powering their sleep with the power of sound.Sleep hygiene secrets: your key to quality sleepHow to sleep better & importance of a sleep routine.Read More↗Why we toss and turn while sleeping, and how to stop Learn why we toss and turn while sleeping, and what to do to stop itRead More↗Examining the brain’s connection to deep sleepLearn more about brain structure, sleep stages, and the utilization of sounds that mirror vital brain waves.Read More↗5 Sleep Science Hacks Proven to Help You SleepFrom setting a sleep schedule to getting back into the art of napping, sleep science has discovered the keys to unlocking a good night’s sleep.Read More↗FAQWhat is the difference between Soundscapes and Scenarios? The Endel app has two main forms of audio content — Soundscapes and Scenarios. Soundscapes are endlessly generated on the device following your local inputs — weather, time of day, cadence of your walks, and heart rate (if you’re wearing your Apple Watch), and others.Learn more about the inputs.Scenarios are sound sessions with predefined logic (initial, middle, and end phases are defined and pre-generated for the timer you set). They are designed to be used for a particular task or life occasion in a timed session.Is Endel sound tuned to 432kHz? The Endel's sound is tuned to 440 hertz. It's the so-called natural order, where the relationships between the intervals are as simple for the brain to process as possible. According to research, it helps reduce the cognitive load in perceiving musical information.Does Endel use binaural beats? There is a Binaural Beats Scenario in the app. The other sounds don’t use this technology. Binaural waves at the physical level work exclusively in stereo headphones, make sure you wear them when you use the Binaural Beats Scenario.I need help with Endel. How can I get it? If you have any issues with the Endel app function or with your subscription or have any questions about Endel, you can contact our support via a form in the app or by reaching out to us: ask@endel.io.Why do I need to buy a subscription for Endel? Paid subscription model is a necessary format for us to keep maintaining and developing Endel continually. The subscription price includes our work on updates — not only do we fix bugs and improve our products’ technical performance gradually, but also consistently add new sounds, features, and user experience improvements, based on user research and with the best interest of the Endel community in mind.Do I need to follow the circadian and ultradian cycles? The circadian and ultradian cycles are scientifically backed theories of daily energy levels. In an ideal situation, it would be advisable to follow the rhythms: rest on low phases, and be active on high phases of the cycles. But it is hard to accommodate in modern everyday life. Which is why the Endel app can also help you mitigate the negative influence of the cycles with sound.For example, when you play Focus during a low period of the circadian cycle, you’ll notice that the sound is still stimulating for concentration, but not as intense and driving as during the highs, to help you ease into the work you need to do at that moment, instead of pushing you too hard.How effective is Endel? Millions of happy users and their feedback in endless reviews and messages attest to the efficiency of Endel’s sound. However, sound perception is a very subjective matter, and we fully admit that Endel may not work for everyone in the same way. We base all of our Soundscapes and Scenarios design on scientific research, and there is peer-reviewed research that backs the efficiency of Endel’s sound compared to playlists and silence. For more information on the science behind Endel’s sound, go here.Is Endel scientifically proven? All Endel Soundscapes and Scenarios are based on scientific research around sound, neuroscience and Circadian science, and there is a peer-reviewed study that backs the efficiency of Endel’s sound compared to playlists and silence. For more information on the science behind Endel’s sound, go here.