# SRing vs Calipet

The clearest difference is in-app purchases: SRing at none against Calipet's 2. SRing also leads on ads (none vs shown) and iOS requirement (12.0 vs 18.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Calipet sells 2 in-app purchases, starting at $9.99 per month. SRing asks for nothing beyond the download.

SRing ships an update monthly, Calipet every 3 weeks. The most recent releases landed on July 28, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | SRing | Calipet |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (3 ratings)](https://appshunter.io/ios/app/sring/id6472034068/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 20 MB | 171 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [智勇 陈](https://appshunter.io/developer/1515662022) | [Calibrx AI Inc.](https://appshunter.io/developer/1850824038) |

## What reviewers say

### SRing

[App page](https://appshunter.io/ios/app/sring/id6472034068)

This application connects to smart rings to display and analyze your daily exercise and sleep data. It helps you understand your health status by providing visual insights into your activity levels and sleep patterns.

**Highlights:** Exercise data display (steps, calories, duration), Sleep data display (deep sleep, light sleep, sleep time), Visual data analysis, Health status understanding, Exercise and sleep plan management

**In-app purchases:** none


### Calipet

[App page](https://appshunter.io/ios/app/calipet/id6754895847)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calipet Pro Monthly | $9.99 | per month |
| Calipet Pro Annual | $59.99 | per year |


## Frequently asked questions

### Is SRing free?

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

### Is Calipet free?

Calipet is free to download, with in-app purchases available.

### Do SRing or Calipet have ads?

Calipet shows ads; SRing does not.

### Which is updated more often, SRing or Calipet?

SRing ships an update monthly, and Calipet every 3 weeks. Most recently, SRing was updated on July 28, 2026 and Calipet on September 18, 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.*