# Ruler vs ScreenRuler

The clearest difference is ads: Ruler at none against ScreenRuler's shown. Ruler also leads on update cadence (every 2 months vs every 7 months) and iOS requirement (13.0 vs 15.1). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Ruler ships an update every 2 months, ScreenRuler every 7 months. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Ruler | ScreenRuler |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 7 months |
| Size | 23 MB | 31 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [mintaek lee](https://appshunter.io/developer/1862176346) | [pilyeong heo](https://appshunter.io/developer/1835315150) |

## What reviewers say

### Ruler

[App page](https://appshunter.io/ios/app/ruler-screen-measure-tool/id6757359013)

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

**In-app purchases:** none


### ScreenRuler

[App page](https://appshunter.io/ios/app/screenruler-measure-length/id6761749448)

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

**In-app purchases:** none


## Frequently asked questions

### Is Ruler free?

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

### Is ScreenRuler free?

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

### Do Ruler or ScreenRuler have ads?

ScreenRuler shows ads; Ruler does not.

### Which is updated more often, Ruler or ScreenRuler?

Ruler ships an update every 2 months, and ScreenRuler every 7 months. Most recently, Ruler was updated on November 9, 2026 and ScreenRuler 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.*