# SleepStream 2 Ultimate vs myCircadianClock

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.

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.

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.

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.

## The numbers

| Metric | SleepStream 2 Ultimate | myCircadianClock |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.5 (188 ratings)](https://appshunter.io/ios/app/sleepstream-2-ultimate/id535583437/reviews)** | [2.3 (251 ratings)](https://appshunter.io/ios/app/mycircadianclock/id982118665/reviews) |
| Number of ratings | 188 | **251** |
| Positive reviews | **81.4% of reviews** | 19.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Paid | **Free** |
| Size | 32 MB | 56 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Explosive Apps](https://appshunter.io/developer/300812186) | [THE SALK INSTITUTE FOR BIOLOGICAL STUDIES, SAN DIEGO, CALIFORNIA](https://appshunter.io/developer/1571953378) |

## What reviewers say

### SleepStream 2 Ultimate

[App page](https://appshunter.io/ios/app/sleepstream-2-ultimate/id535583437)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 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

**What reviewers complain about**

- 🐛 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

**Reported bugs**

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

**Requested features**

- 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

[App page](https://appshunter.io/ios/app/mycircadianclock/id982118665)

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:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

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

**Requested features**

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


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*