# Unit Converter & Tools vs Rules Measure

The clearest difference is in-app purchases: Rules Measure at none against Unit Converter & Tools's 1. Rules Measure also leads on update cadence (every 9 days vs every 4 weeks). Unit Converter & Tools's advantage is iOS requirement (13.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Unit Converter & Tools sells 1 in-app purchase, starting at $0.99 per month. Rules Measure asks for nothing beyond the download.

Unit Converter & Tools ships an update every 4 weeks, Rules Measure every 9 days. The most recent releases landed on November 5, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Unit Converter & Tools | Rules Measure |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 9 days** |
| Size | 22 MB | 12 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Atif Mumtaz](https://appshunter.io/developer/875232775) | [Davis McDowell](https://appshunter.io/developer/1888685588) |

## What reviewers say

### Unit Converter & Tools

[App page](https://appshunter.io/ios/app/unit-converter-and-tools/id6759855735)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unitverse Star | $0.99 | per month |


### Rules Measure

[App page](https://appshunter.io/ios/app/rules-measure/id6761289085)

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter & Tools free?

Unit Converter & Tools is free to download, with in-app purchases available.

### Is Rules Measure free?

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

### Do Unit Converter & Tools or Rules Measure have ads?

Neither Unit Converter & Tools nor Rules Measure shows ads.

### Which is updated more often, Unit Converter & Tools or Rules Measure?

Unit Converter & Tools ships an update every 4 weeks, and Rules Measure every 9 days. Most recently, Unit Converter & Tools was updated on November 5, 2026 and Rules Measure on November 9, 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.*