Sleep Details vs CIRCUL RING
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sleep Details
Track your sleep data and receive a daily sleep score based on information from your Apple Watch. Gain insights into sleep stages, heart rate, and more, with personalized ratings and factor tagging. Features a memory test and daily summaries for enhanced understanding of your sleep's impact.
- Daily sleep score
- Detailed sleep metrics
- Personalized sleep rating
- Sleep factor tagging
- Morning notifications
- Memory test
- Daily sleep summaries
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Track your sleep related data and see your daily sleep score based on data collected by your Apple Watch. Sleep Details requires an Apple Watch with watchOS 10 or later installed. Sleep Details integrates with the Health app and uses data stored in the Health app. Key features: -Daily sleep score based on sleep duration and other relevant sleep related data -See details of the following sleep related data: Sleep stages and times, Activity while sleeping, Heart rate, Heart rate variability, Respiratory Rate, Blood oxygen levels (SpO2 data is available only on Apple Watch series 6 or later devices), Wrist Temperature (only available on Apple Watch series 8 and Apple Watch Ultra devices ) -Privacy: We do not collect any data from your devices -Receive morning notifications with last nights sleep score and sleep duration -Rate your sleep. Your personal feeling based rating will also adjust your daily score -Tag your sleep with factors that possibly affected your sleep. For example if you feel that caffeine affected your sleep you can tap the caffeine icon to tag your sleep -Add naps: In the iPhone app you can add naps that Sleep Details has detected. You can also add naps manually. Your naps duration will contribute to your daily sleep duration and therefore affect your daily score and sleep dept calculations. -Night Mode: If you open Sleep Details during the night, you will see your most recent 4 hour Heart Rate, Heart Rate Variability and Blood Oxygen (Series 6 or later) averages. -Daily Sleep Summary: Devices that support Apple Intelligence can use the 'Generate summary' feature to generate a daily sleep summary with additional insights (iOS 26 required). -Sleep has an important role in the performance of your memory. To highlight this, we added a simple memory test in Sleep Details: 1) Before going to bed try memorize a set of icons and their location. 2) Then after waking up, try remember and fill in these items. 3) New icons and locations will be generated for each day, so you can track your long-term progress by completing a new test each day. -Add Sleep Details as a complication on your watch faces -On your Apple Watch you can tap different metrics to see more details -Two week sleep score trend available on your iPhone. You can tap different days to see the sleep details of the selected day -On your iPhone you can tap different metrics to get a description of the selected metric -History view with your all-time averages and min/max values for all available sleep related data -After your free seven day trial has ended you can continue to use the app by purchasing monthly subscription or the "Lifetime access" in-app purchase. Purchases can also be made before the trial ends by tapping the trial end date. -"Lifetime access" and monthly subscription purchases will also unlock the Sleep Details toolbar and comparison charts Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula How are different health metrics used to calculate your last nights sleep score? As an example your score will be lower if your last nights heart rate average is higher than your weekly resting heart rate average. In this case the heart rate ring will be colored red so you can easily spot which metrics are negatively affecting your score. If you have any questions we will happily help you: contact@sydvesti.com
CIRCUL RING
This app tracks your sleep quality, daily activity, and key health indicators. It provides personalized insights and trends to help you understand and adjust your physical state. Professional sports data recording is also included.
- Sleep monitoring (heart rate, stages, temperature)
- Daily activity tracking (heart rate, steps, calories)
- Health indicator trend analysis
- Professional sports data recording
- Personalized health tips
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1. Monitor various body indicators during sleep, CIRCUL RING will monitor heart rate, sleep stage, night body temperature and other indicators in real time when you sleep, you can easily know the sleep status of each night, and provide personalized tips to help you adjust your physical state; 2. Monitor daily activity data around the clock, record your daily heart rate, steps, calories, exercise time, etc., and provide personalized prompts; 3. A quick overview of the changes in health indicators, rising or falling over time, and the trend of daily, weekly, and monthly changes at a glance; 4. Professional sports details record, including heart rate, step count and other detailed data, data charts, etc. *Disclaimer: This app is not a medical app, and all health-related data, results, recommendations, etc. are for reference only, not for medical purposes. The ring product connected to the application is not a medical device and cannot provide any medical services, if you feel unwell, please consult a medical institution in time.
Screenshots
Verdict
The clearest difference is rating: Sleep Details at 4.4 against CIRCUL RING's 2.3. Sleep Details also leads on review sentiment (50% vs 13%) and ratings volume (1.1K vs 34). CIRCUL RING's advantage is in-app purchases (none vs 3) and update cadence (every 3 weeks vs every 2 months). On price, ads 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
Both are free to download. Sleep Details sells 3 in-app purchases, starting at $2.99 per month. CIRCUL RING asks for nothing beyond the download.
Sleep Details holds the better App Store score, 4.4 against 2.3. That said, the two scores are not equally well evidenced: Sleep Details has 1.1K ratings behind it against 34, so its average is the more settled of the two. Written reviews point the same way: 50% of Sleep Details's written reviews are positive against 13% of CIRCUL RING's.
Sleep Details ships an update every 2 months, CIRCUL RING every 3 weeks. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.
| Parameter | Sleep Details | CIRCUL RING |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (1.1K ratings) — better | 2.3 (34 ratings) |
| Positive reviews | 50.0% of reviews — better | 13.3% of reviews |
| Number of ratings | 1.1K — better | 34 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Requires iOS | 18 | 13.0 — better |
| Further details — not scored | ||
| Size | 19 MB | 106 MB |
| Age rating | 4+ | 17+ |
| Developer | Sydvesti Oy | BodiMetrics, LLC |
Customer experience
Sleep Details
CIRCUL RING
Bugs and requests
Sleep Details
Reported bugs
3 issues- Sleep stage section disappeared
- App keeps kicking user out
- Widget doesn't update with current data
Requested features
4 requests- Add ability to log naps
- Improve widget updates
- Provide more explanation of sleep metrics
- Implement REM sleep tracking
CIRCUL RING
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sleep Details
- Monthly subscription$2.991 Month
- Yearly subscription$29.991 Year
- Lifetime Access$59.99
CIRCUL RING
No in-app purchases









