Comparison

SleepStream 2 Ultimate vs myCircadianClock

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SleepStream 2 Ultimate

This app provides a comprehensive suite of tools to enhance sleep and relaxation. It offers a variety of calming sounds, guided meditations, and visual experiences designed to help users unwind and achieve restful sleep.

Highlights
  • Quality audio with calming sounds
  • Guided meditations and music
  • Breathtaking visualizations and moodlights
  • Binaural & Isochronic brainwave programs
  • Unique audio engine for sound mixing
  • AirPlay support
Features
Read full description

Whether you sleep to dream, rest to recharge, or simply nap just to get by, the hours you spend in bed are probably the most important hours of the day. Recognized as the premier sleep and relaxation aid, SleepStream 2 has been recommended by 148Apps, Dr. Oz, iPhonefreak, Health Magazine, TVN, The Daily App Show, Appolicious and thousands of satisfied customers. Think about the difficulties you’ve had trying to sleep. Maybe you were battling a wired mind, racing through a million different thoughts; or perhaps trying to drown out the sound of an unsettled baby, crying from a nearby airplane seat. In a life full of distractions like these, all you’d like is a window of peace and quiet – or at least a few hours of undisturbed rest and relaxation. Thankfully, SleepStream 2 not only assists in capturing a full night’s slumber, but it does so in a way that results in an absolute bodily recharge everytime you close your eyes. Main features: - 8 Hours of Quality Audio Each of SleepStream’s calming sounds or piece of music has been handpicked and carefully crafted to remove irritating frequencies and volume inconsistencies. - Guided Meditations & Music Sometimes you need just a little bit more to shake the stress of a long, hard day. So, SleepStream 2 now has the ability to mix background sounds with guided meditations and music. Including four guided meditations for sleep, relaxation, motivation and energy, and hours of calming, soul-soothing music. - Breathtaking Visualizations, Wallpapers & Moodlights, SleepStream 2 gives you a complete visual getaway, thanks to the scenic pictures and video loops that can be viewed while listening to the app’s audio programs. Visualizations now include a new moodlight feature, where randomly generated plasma images flow across the screen in a harmony of colors and textures. You’ll have no choice but to drift into a world of relaxation. - 140 Binaural & Isochronic Brainwave Programs – 15 Categories To stimulate the brain’s activity associated with relaxation, sleep and focused states of being, SleepStream 2 also offers 140 specially designed brainwave programs for a full and complete, integrated sound experience. SleepStream’s 15 brainwave categories include sleep, relaxation, energy, focus, meditation, hypnosis, learning, mood, motivation, creativity, lucid dreaming & more. - Unique Audio Engine & Sound Generators Sleepstream’s audio engine randomly combines hundreds of different sounds, giving you a new experience everytime the app is used. Mix background sounds, music, guided meditations and brainwave programs in any combination for maximum relaxation, night after night. - AirPlay Support Play SleepStream audio on AirPlay enabled speakers and receivers. - Best of All: All Present and Future Premium Downloads are Free! Our loyal Sleepstream users tell us that they don´t want to pay for downloads! We listened! Sleepstream 2 Ultimate buys you the latest version of SleepStream 2 for both iPhone and iPad, and all present and future premium downloads are free – a saving of $23 compared to obtaining the downloads through in-app purchases in the other SleepStream 2 versions. - Many Uses – Even When You’re Awake! Equipped with functional timer, SleepStream makes it easy to enjoy power naps. Just engage the timer and alarm, and SleepStream will gently wake you after your session has ended. But don’t stop there – the app is also perfect for relaxation, meditation, noise masking, yoga, and pure enjoyment. SleepStream 2 was developed in conjunction with recognized sleep and relaxation experts, certified hypnotherapists and trained audio professionals to ensure a soothing sleep experience that is difficult to attain through traditional means. Don’t let the stress of everyday life get the best of you, depriving you of your ability to focus, relax, and most importantly rest - get Sleepstream 2 Ultimate today and be refreshed and ready for tomorrow.

About

myCircadianClock

This app aids research studies by tracking diet, exercise, and sleep patterns to understand their impact on health. It allows users to log food intake, sleep times, physical activity, and health metrics, with medication reminders and HealthKit integration.

Highlights
  • Log food and drink intake with camera
  • Record sleep times
  • Log physical activity
  • Monitor health parameters
  • Medication reminders
  • Integrates with HealthKit
Features
Read full description

This app is for use in research studies examining how diet, exercise and sleep affect health and healing. Our body contains circadian (circa – approximately and dian – day) or 24 h clocks that determines the time to sleep, feel hungry or get ready for physical activity. Research studies run in different locations are trying to understand the interaction between “how much” and “when” we sleep, eat or exercise for better health. You need an activation code from these research studies to download and use the app. Following are the key features: - Camera function to snap picture of everything you eat or drink - Sleep tab to record time to bed and time of waking up - Exercise tab to log physical activity - Personalized food menu - Health tab to log and monitor health parameters - Medication reminders - Feedback with the research coordinator - Integrated healthkit framework to track your health information.

Screenshots

SleepStream 2 Ultimate4 screens
myCircadianClock4 screens

Verdict

The call

The clearest difference is review sentiment: SleepStream 2 Ultimate at 81% against myCircadianClock's 19%. SleepStream 2 Ultimate also leads on rating (4.5 vs 2.3) and iOS requirement (9.0 vs 15.6). myCircadianClock's advantage is price (Free vs $9.99) and update cadence (monthly vs every 2 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

myCircadianClock is free to download; SleepStream 2 Ultimate costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

SleepStream 2 Ultimate holds the better App Store score, 4.5 against 2.3. Both are backed by a comparable volume of ratings — 188 and 251 respectively. Written reviews point the same way: 81% of SleepStream 2 Ultimate's written reviews are positive against 19% of myCircadianClock's.

UpkeepUpdate frequency

SleepStream 2 Ultimate ships an update every 2 months, myCircadianClock monthly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
SleepStream 2 Ultimate versus myCircadianClock: the parameters behind the verdict, then further details
ParameterSleepStream 2 UltimatemyCircadianClock
Price$9.99Free — better
Rating4.5 (188 ratings) — better2.3 (251 ratings)
Positive reviews81.4% of reviews — better19.1% of reviews
Number of ratings188251 — better
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better15.6
Further details — not scored
Size32 MB56 MB
Age rating12+4+
DeveloperExplosive AppsTHE SALK INSTITUTE FOR BIOLOGICAL STUDIES, SAN DIEGO, CALIFORNIA

Customer experience

SleepStream 2 Ultimate

All ratings188 ratings
Positive85.6%
Neutral3.2%
Negative11.2%
Written reviews194 reviews
Positive81.4%
Neutral5.2%
Negative13.4%

myCircadianClock

All ratings251 ratings
Positive23.1%
Neutral11.2%
Negative65.7%
Written reviews183 reviews
Positive19.1%
Neutral14.2%
Negative66.7%

User reviews

SleepStream 2 Ultimate

From 188 App Store ratings

What we love

  • 👍 Helps with sleep, relaxation, and focus
  • 🚀 Customizable sound options
  • 💡 Variety of binaural beats and overlays
  • 👍 Useful for meditation and anxiety reduction
  • 👍 Helps with tinnitus and headaches

Room to improve

  • 🐛 Crashes when trying to download additional content
  • 🔍 App not updated in years, feels outdated
  • 💰 Expensive for an app that hasn't been updated
  • 🔍 Scaling issues on iPad Pro
  • 🔍 Difficulty navigating and selecting options

myCircadianClock

From 251 App Store ratings

What we love

  • 🚀 Easy to use
  • 💡 Contributes to research
  • 👍 Helpful for tracking health
  • 🚀 Simple and effective

Room to improve

  • 🐛 Buggy and glitchy
  • 🐛 Crashes frequently
  • 🐛 Data loss issues
  • 🐛 Slow and unresponsive
  • 🐛 Clunky and unintuitive UI

Bugs and requests

SleepStream 2 Ultimate

Reported bugs

3 issues
  • Crashes when trying to download additional content
  • Scaling issues on iPad Pro
  • Difficulty navigating and selecting options

Requested features

5 requests
  • Longer timer options (up to 8 hours)
  • Sleep analysis and tracking features
  • More guided meditations and new sound content
  • Ability to import custom music/sounds
  • Airplay and Bluetooth speaker support

myCircadianClock

Reported bugs

5 issues
  • Login/registration issues
  • Incorrect sleep time recording
  • Inability to log food/activity retrospectively
  • Pending data not uploading
  • Notification issues

Requested features

5 requests
  • Ability to edit/delete entries
  • Better data syncing and backup
  • Integration with Apple Health
  • More customization options
  • Improved sleep tracking

In-app purchases

None

SleepStream 2 Ultimate

No in-app purchases

None

myCircadianClock

No in-app purchases

Questions

Is SleepStream 2 Ultimate free?
SleepStream 2 Ultimate costs $9.99, with no in-app purchases.
Is myCircadianClock free?
myCircadianClock is free to download, with no in-app purchases.
Which has better reviews, SleepStream 2 Ultimate or myCircadianClock?
SleepStream 2 Ultimate is rated higher. SleepStream 2 Ultimate averages 4.5 out of 5 from 188 ratings, while myCircadianClock averages 2.3 from 251 ratings.
Do SleepStream 2 Ultimate or myCircadianClock have ads?
Neither SleepStream 2 Ultimate nor myCircadianClock shows ads.
Which is updated more often, SleepStream 2 Ultimate or myCircadianClock?
SleepStream 2 Ultimate ships an update every 2 months, and myCircadianClock monthly. Most recently, SleepStream 2 Ultimate was updated on October 26, 2026 and myCircadianClock on October 24, 2026.

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