# Pocket Rulers

> Digital ruler and protractor with customizable units, backgrounds, and colors. (iPhone/iPad app by Keiichi Okamoto.)

- Source: https://appshunter.io/ios/app/pocket-rulers/id436696045 (this page in markdown: same URL + `.md`)
- Developer: [Keiichi Okamoto](https://appshunter.io/developer/431066685)
- Category: Utilities, Education
- Price: Free
- Rating: 1.00/5 from 1 App Store ratings · 22 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 18 MB
- Languages: American English, Japanese
- Released: 2011-05-22
- Data updated: 2026-08-13
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/pocket-rulers/id436696045/reviews.md

## What is Pocket Rulers?

This application provide ruler and protractor function on iPhone, iPod Touch and iPad2 
iOS 10 is supported. 

In Ruler, supporting next units: 
+ cm 
+ inch 
+ sun 


in Protractor: 
+ degree 
+ radian 

Ruler and Protractor 
・You can move ruler by tap and drag. 
・You can switch picture and camera by tapping camera button at top right of screen. 
・Default background is picture. 
・You can select background picture from album on your device. 
・You can change color of Ruler and Protractor.

## Key features

- Digital ruler and protractor
- Supports cm, inch, and sun units
- Supports degree and radian measurements
- Moveable ruler via tap and drag
- Switch between picture and camera backgrounds
- Customizable background pictures from album
- Adjustable ruler and protractor colors

## Recent user reviews (10 of 22)

All indexed reviews: https://appshunter.io/ios/app/pocket-rulers/id436696045/reviews.md

### 1/5 — 作業エリアが狭すぎます

*2018-03-25*

・全画面にならない。
・画面の三分の一が広告や設定、切り替えが占め、狭い。
・縦画面にならない。

### 1/5 — Pocket Rulers

*2016-03-02*

The numeric markings are not noted on the ruler in either inches or centimeters. This app doesn't have both cm. and inches on the same ruler so it is useless.

### 4/5 — まぁまぁ

*2016-02-18*

アプリとしてこの手のものが欲しかったのでとても良いです。10cmほどしか測れませんが、定規と比較したところそこまでずれてませんしいざという時に使いやすいかと思います。

ios9
iphone6の話です。

### 3/5 — 改善点を至急

*2015-11-28*

写真の拡大縮小移動出来るようにしてほしい。
有料でも良いので広告外せるようにしてほしい。

### 3/5 — 使い方が分からない

*2015-04-11*

カメラとの距離で対象物の大きさが変わるので、それにより測定値が変わってしまいます。どうやって距離を合わせるのですか？

### 1/5 — Not very useful

*2014-10-04*

This would be so much better if u had the numbers on the protractor and ruler

### 1/5 — う〜ん

*2014-08-11*

微妙かな。間違って広告バナーばかり押してしまう
(-｡-;

### 4/5 — まあまあ

*2013-06-08*

ケーキの切り分けなどには使えそうだか、対象物との距離によって変わってくる。
ある意味使えない。

### 2/5 — iPad miniに非対応

*2013-02-26*

詳細情報の必須項目にiPadminiが書かれているにもかかわらず、iPadminiだと定規が小さく表示されるため、定規として使えないです。シンプルで良さそうなのに残念。

### 2/5 — シンプルさは良いが、

*2013-02-21*

背景が邪魔

## Frequently asked questions about Pocket Rulers

### What units does Pocket Rulers support for measurement?

Pocket Rulers supports centimeters, inches, and 'sun' for its ruler function. For angle measurements, it supports degrees and radians.

### Can I use my own photos as a background in Pocket Rulers?

Yes, Pocket Rulers allows you to select background pictures from your device's album. You can also switch between a default picture background and the camera view.

### How do I move the ruler in Pocket Rulers?

You can move the ruler by simply tapping and dragging it on the screen. This allows for precise positioning during measurements.

### Does Pocket Rulers have ads?

Pocket Rulers does not contain advertisements, as indicated by its data. It is a free application without any ad interruptions.

### What devices is Pocket Rulers compatible with?

Pocket Rulers is designed for iPhone, iPod Touch, and iPad devices running iOS 10 or later.

### How often is Pocket Rulers updated?

The latest version of Pocket Rulers is 2.6.1, which was last updated on June 14, 2017. Updates are not frequent.

### What is the age rating for Pocket Rulers?

Pocket Rulers has an age rating of 4+, making it suitable for young users and general audiences.

### Can I change the appearance of the tools in Pocket Rulers?

Yes, you can change the color of both the ruler and the protractor within the Pocket Rulers application to personalize its appearance.

## Version history (last 5 releases)

### 2.6.1 — 2017-06-14

This app has been updated by Apple to display the Apple Watch app icon.

+ Supporting iPad Pro (9.7 inch), iPad (5th gen), iPad Pro (12.9 inch 2nd gen), iPad Pro (10.5 inch)
+ We fixed minor problems.

### 2.6.0 — 2016-10-27

+ Supporting iOS10
+ Supporting iPhone 7
+ Supporting iPhone 7 Plus

### 2.5.0 — 2016-05-23

+ Supporting iPhone SE

### 2.4.0 — 2015-10-15

+ Supporting iOS 9
+ Supportting iPhone 6s and iPhone 6s Plus

### 2.3.0 — 2014-10-08

+ Supporting iOS 8
+ Supporting iPhone 6 and iPhone 6 Plus

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| --- | --- | --- | --- |
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| [Image Bulk Saver / iDig](https://appshunter.io/ios/app/image-bulk-saver-idig/id1208127205) | 4.2 (151) | Free | Utilities |
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| [Image Blocker](https://appshunter.io/ios/app/image-blocker/id1047221745) | 3.3 (3) | $0.99 | Utilities |

## More apps by Keiichi Okamoto

- [Sketch Camera.](https://appshunter.io/ios/app/sketch-camera/id575799607)
- [Serial Shot Lite with Filter Effect](https://appshunter.io/ios/app/serial-shot-lite-with-filter-effect/id589227088)
- [小学生の漢字 - その字は習った？](https://appshunter.io/ios/app/id635140271)
- [四字熟語 1480〜 手書きパズル](https://appshunter.io/ios/app/1480/id768426341)
- [Time Sheet ◆ 出退勤管理](https://appshunter.io/ios/app/time-sheet/id899354609)

All apps by Keiichi Okamoto: https://appshunter.io/developer/431066685

## Related topics

[ruler pictures](https://appshunter.io/ios/topics/ruler-pictures)

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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 2026-08-13.*