# JustRuler - 実寸定規

> JustRuler - 実寸定規 (iPhone/iPad app by atsuko imai.)

- Source: https://appshunter.io/ios/app/justruler/id6758887849 (this page in markdown: same URL + `.md`)
- Developer: [atsuko imai](https://appshunter.io/developer/1830783417)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.2 · 5 MB
- Languages: Arabic, Croatian, Czech, Danish, Dutch, English, Finnish, French, German, Greek and 20 more
- Released: 2026-02-13
- Data updated: 2026-07-09
- User reviews in markdown: https://appshunter.io/ios/app/justruler/id6758887849/reviews.md

## What is JustRuler?

JustRuler turns your iPhone screen into a real-size ruler. When you forgot your tape measure but need a quick check on length, angle, or level, this is the one tool to keep handy.

[Key features]
- Real-size ruler mode — Place an object on the screen and read the scale. Toggle cm/inch instantly.
- Two-line measure mode — Pinch an object between the on-screen lines and read the gap to the millimeter.
- Protractor (0°–180°) — Drag the on-screen arm to measure angles. Great for DIY and furniture assembly.
- Spirit level — Lay the device flat and the bubble centers. Hold it vertical for a bar-style level.
- Calibration — Match your real ruler once and every measurement becomes more accurate.
- 5 styles — Classic / Modern / Dark / Metal / Custom Color.

[New in v2.1]
- Sequential measurement: stack multiple segments and read the running total
- Reference mode: set a target value and see the live diff against it
- Voice readout: hear values spoken aloud when your hands are full
- 31 languages supported

[Who it's for]
- DIY and craft enthusiasts
- Anyone who doesn't want to carry a ruler around
- Students, designers, makers

Free with one launch interstitial ad. A one-time $0.99 purchase removes ads forever.

Privacy Policy: https://kazusa703.github.io/privacy.html
Terms of Use: https://kazusa703.github.io/terms.html
Support: https://kazusa703.github.io/support.html

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |



## Version history (last 1 release)

### 2.1 — 2026-05-11

v2.1 update

[New]
- Sequential measure mode: add segments and read the total.
- Reference mode: set a target via history or input; live diff with haptic + voice when matched.
- Voice readout: speaks values as you drag and save, in your language.
- 31 languages supported (was Japanese only).

[Other]
- Internal optimization and bug fixes.

Please let us know what you think via Support.

## More apps by atsuko imai

- [キーワードメモー忘れる、を価値に変える](https://appshunter.io/ios/app/id6749497390)
- [aikotoba3](https://appshunter.io/ios/app/aikotoba3/id6757985811)
- [PersonalRhythm](https://appshunter.io/ios/app/personalrhythm/id6758055088)
- [Kyokun — Learn from Mistakes](https://appshunter.io/ios/app/kyokun-learn-from-mistakes/id6758373650)
- [Tapku - Tap Counter](https://appshunter.io/ios/app/tapku-tap-counter/id6758854299)
- [Soko - Place-Based Tasks](https://appshunter.io/ios/app/soko-place-based-tasks/id6758879585)

All apps by atsuko imai: https://appshunter.io/developer/1830783417

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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 2026-07-09.*