# Screen Ruler: Measure Length — user reviews

> 31 indexed App Store user reviews of Screen Ruler by 向阳 杨, rated 3.60/5 from 23 ratings.

- Source: https://appshunter.io/ios/app/screen-ruler-measure-length/id1174757735/reviews
- App overview in markdown: https://appshunter.io/ios/app/screen-ruler-measure-length/id1174757735.md
- Rating breakdown: 5★ 13 · 4★ 2 · 3★ 0 · 2★ 2 · 1★ 6

## Newest reviews (10 of 31)

### 2/5 — 2% error on iPad

*2025-08-31, version 1.8.4*

100mm measures as 102mm, so not appropriate

### 3/5 — Imprecise by default and no ability to calibrate

*2022-02-18, version 1.6.2*

~1 mm off at screen length

### 2/5 — Вылетает

*2020-09-19, version 1.5*

После обновления, приложение не открывается

### 5/5 — Thank you!

*2020-02-16, version 1.4.2*

Спасибо за приложение! Люди, которые ставят одну звезду только за название, вы идиоты.

### 5/5 — Название

*2020-01-29, version 1.3.5*

Почему бы не назвать приложение  просто Линейкой ?

### 5/5 — great ruler app

*2019-12-30*

This is a fairly simplistic ruler app that suits the needs I have, however, the ads are kind of annoying. This is an app I would pay a reasonable price around (maybe) $0.99 to make the ads go away forever. Otherwise, great app!

### 5/5 — Minimale e funzionale

*2019-12-28, version 1.3.5*

L'applicazione fa quello che ci si aspetta e lo fa bene, con un peso ridotto. Ottimo.

### 5/5 — this is an awesome app

*2019-12-02, version 1.3.5*

Much better than those bs AR measure

### 3/5 — Good idea, some work needed

*2019-07-25, version 1.3.4*

The ruler isn’t accurate on my iPhone XS. 100mm on a real ruler measures about 99mm on the app. Close enough for my purposes, but it shouldn’t be too hard to make 100% accurate.  

Also the app forces landscape mode, which again isn’t a big deal, except to swipe home it’s from the side which was not obvious at first. 

The reason I like this app are the sliders to measure things. Very cool idea, makes it easy to line things up.

### 5/5 — Prático, funcional e gratuito.

*2017-04-21, version 1.3*

Excelente app. Faz o que promete.

## Most critical reviews (10 lowest-rated)

### 1/5 — Eu só queria…

*2025-06-07, version 1.8.3*

Que não tivesse dois pontos de medição. Só um. Mas não sei como fazer isso.

### 1/5 — Ads and tracking

*2025-02-13*

Totally unnecessary but also unsurprising.

### 1/5 — Not accurate

*2024-12-09*

I held a clear ruler up to the screen and both inches and mm were smaller than the ruler.

### 1/5 — 広告が閉じられない

*2024-11-29, version 1.8.1*

アンインストール

### 1/5 — Not accurate at all

*2024-03-15*

Shows 5.5 on a 6.1 phone

### 1/5 — shows adult content

*2024-03-15*

within two minutes it was showing adult ads and app needs to be removed from store

### 1/5 — Crappy app

*2021-11-08*

App is NOT ACCURATE by any men’s. The cm is way off and the inches are off as well. I’ve checked everything with an actual ruler

### 1/5 — Upgrade

*2020-09-08, version 1.5*

Nn c’è per iPad

### 1/5 — 画面サイズに対応してない

*2020-02-12, version 1.4.1*

画面サイズに対応してない

### 1/5 — Название

*2020-02-05, version 1.4*

Какой еще "властитель -"? 
Дам вам идею, может просто "Линейка"?! Нет?!

## Most praised reviews (10 highest-rated)

### 5/5 — ios26系统 ipad

*2025-10-26, version 1.9.0*

横屏不能用 竖屏可以 希望改进

### 5/5 — Incredibly Accurate and Easy to Use!

*2025-05-21*

🌟🌟🌟🌟🌟

I've tried several screen ruler apps before, but this one stands out for its precision and smooth user experience. The interface is clean and intuitive, making it perfect for quick measurements on the go. I especially appreciate how easy it is to switch units and calibrate the ruler to my screen. Whether I'm measuring small objects for design work or just checking dimensions out of curiosity, this app gets the job done perfectly. Highly recommended for anyone who needs a reliable digital ruler!

### 5/5 — excelente mesmo muito bom

*2024-10-22, version 1.7.2*

excelente mesmo muito bom

### 5/5 — long

*2024-09-22*

i got exactly 4 inches lets go

### 5/5 — Simple

*2024-08-10*

Simple, easy to use, great app!

### 5/5 — Best

*2023-12-16, version 1.7.2*

Excelente

### 5/5 — Thank you

*2022-04-07*

What I needed in a pinch to draw a simple plan of a tiny house. Simple , free with no ads! Thank you!

### 5/5 — 使える

*2020-05-26, version 1.5*

2020年時点でちゃんと更新されているし、シンプルで使いやすい。
更新が止まって画面サイズの対応が追いついていない定規アプリも多い中、iPad Pro 11” とiPhone XSで使えて助かった。

### 5/5 — Works great on IPhone XR

*2020-04-24*

Finally found an accurate ruler app for my iPhone XR!  Thank you!

### 5/5 — cool ruler

*2020-02-19*

Now I have a ruler on the go !

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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 2026-08-28.*