# myC1 Mobile vs Ring Sizer

The clearest difference is in-app purchases: myC1 Mobile at none against Ring Sizer's 2. myC1 Mobile also leads on device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Ring Sizer sells 2 in-app purchases, starting at $3.99 per 7 days. myC1 Mobile asks for nothing beyond the download.

myC1 Mobile ships an update fortnightly, Ring Sizer every 2 weeks. The most recent releases landed on October 7, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | myC1 Mobile | Ring Sizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.3 (3 ratings)](https://appshunter.io/ios/app/ring-sizer-sizerly/id6746245798/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 10 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Orcadis](https://appshunter.io/developer/1471107584) | [Dziyana Dashynevich](https://appshunter.io/developer/1815927618) |

## What reviewers say

### myC1 Mobile

[App page](https://appshunter.io/ios/app/myc1-mobile/id1471107585)

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

**In-app purchases:** none


### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-sizerly/id6746245798)

Accurately determine your ring size using your phone's screen or a built-in ruler. Supports multiple international sizing standards and allows saving measurements for future use. Ideal for online shoppers and jewelers.

**Highlights:** Measure ring size via diameter or circumference, Supports US, UK, EU/ISO, AU, JP, CN, RU sizes, Built-in screen ruler for finger measurement, Save measurements for multiple users, Ad-free experience

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $3.99 | per 7 days |
| Annual Premium | $19.99 | per year |


## Frequently asked questions

### Is myC1 Mobile free?

myC1 Mobile is free to download, with no in-app purchases.

### Is Ring Sizer free?

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

### Do myC1 Mobile or Ring Sizer have ads?

Neither myC1 Mobile nor Ring Sizer shows ads.

### Which is updated more often, myC1 Mobile or Ring Sizer?

myC1 Mobile ships an update fortnightly, and Ring Sizer every 2 weeks. Most recently, myC1 Mobile was updated on October 7, 2026 and Ring Sizer on October 2, 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.*