# aaboRing vs Change 66

The clearest difference is device support: Change 66 at 3 against aaboRing's 1. Change 66 also leads on iOS requirement (15.0 vs 18.6). 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.

aaboRing ships an update every 3 weeks, Change 66 every 4 weeks. The most recent releases landed on October 8, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | aaboRing | Change 66 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (11 ratings)](https://appshunter.io/ios/app/aaboring/id6450259506/reviews)** | — |
| Number of ratings | **11** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | Free | — |
| Size | 261 MB | 59 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [1008 Digital Health Private Limited](https://appshunter.io/developer/1692525689) | [Svar TriFit Wellness Private Limited](https://appshunter.io/developer/1788605875) |

## What reviewers say

### aaboRing

[App page](https://appshunter.io/ios/app/aaboring/id6450259506)

This wearable ring offers comprehensive personal wellness monitoring, including advanced sleep and stress tracking with personalized insights. It also monitors daily activity and vital signs like heart rate, finger temperature, and blood oxygen saturation.

**Highlights:** Advanced sleep monitoring with Sleep Score, Stress monitoring with Readiness Score, Activity tracking and trends, Real-time vital sign measurement, Mindfulness exercises, Data privacy and security

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Change 66

[App page](https://appshunter.io/ios/app/change-66/id6745732973)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is aaboRing free?

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

### Is Change 66 free?

Change 66 is free to download, with no in-app purchases.

### Do aaboRing or Change 66 have ads?

Neither aaboRing nor Change 66 shows ads.

### Which is updated more often, aaboRing or Change 66?

aaboRing ships an update every 3 weeks, and Change 66 every 4 weeks. Most recently, aaboRing was updated on October 8, 2026 and Change 66 on October 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.*