# CIRCUL RING vs 9FIT SmartRing

The clearest difference is review sentiment: 9FIT SmartRing at 69% against CIRCUL RING's 13%. 9FIT SmartRing also leads on rating (5.0 vs 2.3). CIRCUL RING's advantage is ratings volume (34 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

9FIT SmartRing holds the better App Store score, 5.0 against 2.3. That said, the two scores are not equally well evidenced: CIRCUL RING has 34 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 13% of CIRCUL RING's written reviews are positive against 69% of 9FIT SmartRing's.

CIRCUL RING ships an update every 3 weeks, 9FIT SmartRing fortnightly. The most recent releases landed on September 21, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | CIRCUL RING | 9FIT SmartRing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (34 ratings)](https://appshunter.io/ios/app/circul-ring/id6476754730/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/9fit-smartring/id6621224419/reviews)** |
| Number of ratings | **34** | 2 |
| Positive reviews | 13.3% of reviews | **69.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free | Free |
| Size | 106 MB | 28 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [BodiMetrics, LLC](https://appshunter.io/developer/1037690466) | [9FIT INC](https://appshunter.io/developer/1761979340) |

## What reviewers say

### CIRCUL RING

[App page](https://appshunter.io/ios/app/circul-ring/id6476754730)

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.

**Highlights:** Sleep monitoring (heart rate, stages, temperature), Daily activity tracking (heart rate, steps, calories), Health indicator trend analysis, Professional sports data recording, Personalized health tips

**In-app purchases:** none


### 9FIT SmartRing

[App page](https://appshunter.io/ios/app/9fit-smartring/id6621224419)

This app syncs with a smart ring to provide real-time health data including heart rate, sleep, and SpO2. It helps users monitor daily activities and sports performance to achieve wellness goals.

**Highlights:** Heart rate monitoring, Sleep analysis, SpO2 monitoring, Activity tracking, Bluetooth sync

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CIRCUL RING free?

CIRCUL RING is free to download, with no in-app purchases.

### Is 9FIT SmartRing free?

9FIT SmartRing is free to download, with no in-app purchases.

### Which has better reviews, CIRCUL RING or 9FIT SmartRing?

9FIT SmartRing is rated higher. CIRCUL RING averages 2.3 out of 5 from 34 ratings, while 9FIT SmartRing averages 5.0 from 2 ratings.

### Do CIRCUL RING or 9FIT SmartRing have ads?

Neither CIRCUL RING nor 9FIT SmartRing shows ads.

### Which is updated more often, CIRCUL RING or 9FIT SmartRing?

CIRCUL RING ships an update every 3 weeks, and 9FIT SmartRing fortnightly. Most recently, CIRCUL RING was updated on September 21, 2026 and 9FIT SmartRing on June 1, 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.*