CIRCUL+ vs Ultrahuman Ring Sizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CIRCUL+
This utility app connects to a wearable device to monitor vital health metrics like oxygen saturation, heart rate, and sleep patterns. It generates health reports and syncs data with Apple Health, offering insights into your well-being.
- Bluetooth connectivity
- Daily, operation, and sleep monitoring
- Blood pressure monitoring (latest ring)
- Health data synchronization with Apple Health
- Step counting integration
- Health report generation
Read full descriptionHide full description
The application is used in conjunction with circul + to help monitor peripheral oxygen saturation, heart rate, etc., and generate health reports and analysis. Function: 1. Applications can easily connect circul + via Bluetooth. 2. Turn on daily monitoring, operation monitoring and sleep monitoring. The latest ring can monitor blood pressure; Tap to turn monitoring on / off and automatically generate reports. 3. Oxygen saturation, sleep, body temperature, heart rate variability (SDNN), diastolic blood pressure, systolic blood pressure, resting heart rate and heart rate data generated by circul+ ring will be saved to apple health in time. Daily step counting supports access to apple health data, and the source of steps can be switched between ring and apple health. 4. Before making any medical decision, please consult your doctor for advice in addition to using this application.
Ultrahuman Ring Sizer
Instantly determine your ring size by taking a photo of your hand. The app uses advanced AI vision algorithms to accurately calculate your perfect fit, requiring only a standard-sized card in the frame for reference.
- Instant ring size calculation
- AI-powered vision algorithm
- Photo-based measurement
- Requires standard card for reference
- Accurate fit determination
Read full descriptionHide full description
Ultrahuman Ring Sizer is an app that lets you instantly find out your Ultrahuman Ring Size. All you need to do is click a picture of your hand with a standard sized card in the frame and our State-Of-The-Art Vision algorithm will calculate the perfect Ring size for you.
Screenshots
Verdict
The clearest difference is rating: CIRCUL+ at 3.3 against Ultrahuman Ring Sizer's 2.0. CIRCUL+ also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On price, review sentiment, ratings volume and update cadence 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+ holds the better App Store score, 3.3 against 2.0. Both are backed by a comparable volume of ratings — 36 and 24 respectively. Written reviews point the same way: 24% of CIRCUL+'s written reviews are positive against 18% of Ultrahuman Ring Sizer's.
CIRCUL+ ships an update every 5 weeks, Ultrahuman Ring Sizer monthly. The most recent releases landed on October 2, 2026 and October 13, 2026 respectively.
| Parameter | CIRCUL+ | Ultrahuman Ring Sizer |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (36 ratings) — better | 2.0 (24 ratings) |
| Positive reviews | 23.5% of reviews — better | 17.6% of reviews |
| Number of ratings | 36 — better | 24 |
| Update frequency | Every 5 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 157 MB | 45 MB |
| Age rating | 12+ | 4+ |
| Developer | BodiMetrics, LLC | ULTRAHUMAN HEALTHCARE PRIVATE LIMITED |
Customer experience
CIRCUL+
Ultrahuman Ring Sizer
In-app purchases
CIRCUL+
No in-app purchases
Ultrahuman Ring Sizer
No in-app purchases
Questions
Is CIRCUL+ free?
Is Ultrahuman Ring Sizer free?
Which has better reviews, CIRCUL+ or Ultrahuman Ring Sizer?
Do CIRCUL+ or Ultrahuman Ring Sizer have ads?
Which is updated more often, CIRCUL+ or Ultrahuman Ring Sizer?
Other comparisons
