# Ruler - Screen Measure Tool — Measure anything

> Measure anything (iPhone/iPad app by mintaek lee.)

- Source: https://appshunter.io/ios/app/ruler/id6757359013 (this page in markdown: same URL + `.md`)
- Developer: [mintaek lee](https://appshunter.io/developer/1862176346)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 23 MB
- Languages: English
- Released: 2026-01-06
- Data updated: 2026-05-15
- User reviews in markdown: https://appshunter.io/ios/app/ruler/id6757359013/reviews.md

## What is Ruler?

Turn your smartphone screen into a precise ruler. Measure real lengths with a simple touch and drag.

【Key Features】
- Touch & drag to measure lengths instantly
- Switch between cm and inch units
- Real-time measurement display
- Automatic PPI detection for accurate results

【Precision Calibration】
- Credit card (85.6mm) calibration for pinpoint accuracy
- Saved calibration — set it once, measure anytime
- Optimized accuracy per device

【Easy-to-Use Design】
- Clean ruler interface with clear markings
- Dark mode support
- 10 languages supported
- Intuitive unit toggle

【Perfect For】
- Quick measurements when you don't have a ruler
- DIY, crafts, and sewing projects
- Furniture placement and space planning
- Students and professionals on the go

No need to carry a ruler — measure anything, anywhere with your phone!


## Version history (last 3 releases)

### 1.0.2 — 2026-04-08

- Improved device PPI auto-detection accuracy
- Enhanced dark mode UI
- Stability and performance improvements

### 1.0.1 — 2026-03-19

What's New in 1.0.1                                                                                                                                                       
                                                                                                                                 
  - Improved ad experience for better app sustainability                                                                                                                    
  - Minor performance improvements and bug fixes

### 1.0 — 2026-01-07

No release notes.

## More apps by mintaek lee

- [DateRoll](https://appshunter.io/ios/app/dateroll/id6756833400)
- [My Spirit Level](https://appshunter.io/ios/app/my-spirit-level/id6757360629)
- [Lullaby Mix - Baby Sleep Sound](https://appshunter.io/ios/app/lullaby-mix/id6757533656)
- [Tallista](https://appshunter.io/ios/app/tallista/id6757536378)
- [MBTIかけいぼ](https://appshunter.io/ios/app/mbti/id6759451518)

All apps by mintaek lee: https://appshunter.io/developer/1862176346

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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 2026-05-15.*