# RulePad vs Ring Sizer

The clearest difference is iOS requirement: Ring Sizer at 15.1 against RulePad's 17.0. 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.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | RulePad | Ring Sizer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Size | 3 MB | 49 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JUMING LAI](https://appshunter.io/developer/1886006893) | [Yaroslav Trofimov](https://appshunter.io/developer/1851395994) |

## What reviewers say

### RulePad

[App page](https://appshunter.io/ios/app/rulepad/id6762023547)

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

**In-app purchases:** none


### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-measure-ruler/id6793472743)

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

**In-app purchases:** none


## Frequently asked questions

### Is RulePad free?

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

### Is Ring Sizer free?

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

### Do RulePad or Ring Sizer have ads?

Neither RulePad nor Ring Sizer shows ads.

### Which is updated more often, RulePad or Ring Sizer?

RulePad ships an update every 2 weeks, and Ring Sizer every 2 weeks. Most recently, RulePad was updated on November 9, 2026 and Ring Sizer on November 5, 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.*