# Ring Sizer & Measure vs Ruler Studio

The clearest difference is update cadence: Ring Sizer & Measure at every 4 days against Ruler Studio's every 6 weeks. Ruler Studio's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.5). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Ring Sizer & Measure sells 6 in-app purchases, starting at $1.99 per 7 days and Ruler Studio sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Ring Sizer & Measure ships an update every 4 days, Ruler Studio every 6 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Ring Sizer & Measure | Ruler Studio |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 25 MB | 19 MB |
| Requires iOS | 18.5 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Michael Gilroy](https://appshunter.io/developer/1064238651) | [Spyridon Bousios](https://appshunter.io/developer/1168309944) |

## What reviewers say

### Ring Sizer & Measure

[App page](https://appshunter.io/ios/app/ring-sizer-and-measure-ringtry/id6748094304)

Accurately measure your ring size using your iPhone. This tool provides precise diameter and size measurements, supports multiple international sizing systems, and allows you to save your measurements.

**Highlights:** Measure ring size with precision, Switch between inches and millimeters, Utilize visual sizing guides, Support for multiple international sizing systems, Save ring and finger size measurements, Capture finger width with slider controls

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RingSizer Pro | $1.99 | per 7 days |
| RingSizer Pro | $2.99 | per 7 days |
| RingSizer Pro | $4.99 | per 7 days |
| RingSizer Pro | $4.99 | per 7 days |
| RingSizer Pro | $9.99 | per year |
| RingSizer Pro | $19.99 | per year |


### Ruler Studio

[App page](https://appshunter.io/ios/app/ruler-studio/id6777489772)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ruler Pro Lifetime | $2.99 | one-time |


## Frequently asked questions

### Is Ring Sizer & Measure free?

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

### Is Ruler Studio free?

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

### Do Ring Sizer & Measure or Ruler Studio have ads?

Neither Ring Sizer & Measure nor Ruler Studio shows ads.

### Which is updated more often, Ring Sizer & Measure or Ruler Studio?

Ring Sizer & Measure ships an update every 4 days, and Ruler Studio every 6 weeks. Most recently, Ring Sizer & Measure was updated on November 5, 2026 and Ruler Studio on October 31, 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.*