# Ruler - Ultra Precise — user reviews

> 5 indexed App Store user reviews of Ruler by 之宇 毛, rated 4.25/5 from 4 ratings.

- Source: https://appshunter.io/ios/app/ruler-ultra-precise/id1516143021/reviews
- App overview in markdown: https://appshunter.io/ios/app/ruler-ultra-precise/id1516143021.md
- Rating breakdown: 5★ 3 · 4★ 0 · 3★ 0 · 2★ 1 · 1★ 0

## Most critical reviews (5 lowest-rated)

### 1/5 — Not accurate at all on iPhone 14

*2023-02-24*

120mm on the app is actually 119mm.

### 2/5 — Wrong calibration on 16 Pro

*2025-01-20*

Measurements are off

### 5/5 — No ads! 🎉

*2023-03-31*

Amazing and simple app. Thank you

### 5/5 — Simple, no ads

*2022-09-09*

It works, nice and clean

### 5/5 — Accurate on iPhone 13 Pro Max

*2021-12-08*

Finally found a ruler app that gives an accurate ruler measure on an iPhone 13 Pro Max, and I’m even using zoom mode on my iPhone, too.  So many other ruler Apps give a completely inaccurate ruler measurement, at least on my iPhone 13 Pro Max.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*