CIRCUL RING vs BIDSleep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
BIDSleep
This app records heart rate, blood oxygen, and motion data from your Apple Watch for personal wellness tracking. It does not offer analysis or diagnostics, focusing solely on data collection and export.
- Heart rate recording
- Blood oxygen (SpO₂) logging
- Motion data collection
- Optional sleep stage tracking
- Data export
- Personal self-monitoring
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App Purpose BIDSleep is a wellness app that helps users collect heart rate, blood oxygen (SpO₂), motion, and optional sleep stage data during rest or overnight sessions. It is designed solely for personal data logging and self-monitoring purposes. Use of HKWorkoutSession To enable higher-frequency physiological data collection (e.g., heart rate approximately every 5 seconds), BIDSleep uses HKWorkoutSession with the .mindAndBody activity type. This is required because alternative background methods like WKExtendedRuntimeSession do not allow sufficient sampling rates. No Analysis or Interpretation BIDSleep does not perform any health analysis, sleep scoring, or diagnostic interpretation. It simply facilitates the collection and optional export of raw physiological data from the Apple Watch and HealthKit for the user’s personal reference. Privacy All collected data remains securely stored on the user’s device and is never transmitted, analyzed, or shared without the user’s explicit consent. Disclaimer BIDSleep is not a medical device and does not provide any health diagnostics, treatment recommendations, or clinical functionality. It is intended only for general wellness and self-tracking use.
Screenshots
Verdict
The clearest difference is rating: CIRCUL RING at 2.3 against BIDSleep's 2.0. CIRCUL RING also leads on ratings volume (34 vs 4) and iOS requirement (13.0 vs 16.0). BIDSleep's advantage is review sentiment (25% vs 13%). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
CIRCUL RING holds the better App Store score, 2.3 against 2.0. That said, the two scores are not equally well evidenced: CIRCUL RING has 34 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 13% of CIRCUL RING's written reviews are positive against 25% of BIDSleep's, so the app with the better star average is not the one people write more warmly about.
| Parameter | CIRCUL RING | BIDSleep |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (34 ratings) — better | 2.0 (4 ratings) |
| Positive reviews | 13.3% of reviews | 25.0% of reviews — better |
| Number of ratings | 34 — better | 4 |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 106 MB | 3 MB |
| Age rating | 17+ | 4+ |
| Developer | BodiMetrics, LLC | Joyita Dutta |
Customer experience
CIRCUL RING
BIDSleep
In-app purchases
CIRCUL RING
No in-app purchases
BIDSleep
No in-app purchases









