# Ring Sizer & Ruler vs 2Study

The clearest difference is in-app purchases: 2Study at none against Ring Sizer & Ruler's 4. 2Study also leads on update cadence (every 2 days vs every 2 months). Ring Sizer & Ruler's advantage is iOS requirement (15.6 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Ring Sizer & Ruler sells 4 in-app purchases, starting at $9.99 per 7 days. 2Study asks for nothing beyond the download.

Ring Sizer & Ruler ships an update every 2 months, 2Study every 2 days. The most recent releases landed on September 29, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Ring Sizer & Ruler | 2Study |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 46 MB | 22 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [VAST FLOW, TOO](https://appshunter.io/developer/1754861329) | [Hamod Abd Elhai](https://appshunter.io/developer/6788842772) |

## What reviewers say

### Ring Sizer & Ruler

[App page](https://appshunter.io/ios/app/ring-sizer-and-ruler-mesurix/id6776475871)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly \| Mesurix Pro | $9.99 | per 7 days |
| Yearly \| Mesurix Pro | $39.99 | per year |
| Lifetime Access | $14.99 | one-time |
| Mesurix Pro Lifetime | $29.99 | one-time |


### 2Study

[App page](https://appshunter.io/ios/app/2study/id6788868720)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ring Sizer & Ruler free?

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

### Is 2Study free?

2Study is free to download, with no in-app purchases.

### Do Ring Sizer & Ruler or 2Study have ads?

Neither Ring Sizer & Ruler nor 2Study shows ads.

### Which is updated more often, Ring Sizer & Ruler or 2Study?

Ring Sizer & Ruler ships an update every 2 months, and 2Study every 2 days. Most recently, Ring Sizer & Ruler was updated on September 29, 2026 and 2Study on September 17, 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.*