# Real Ruler - Accurate Measure — Actual-size on-screen ruler

> Actual-size on-screen ruler (iPhone/iPad app by Om Gawande.)

- Source: https://appshunter.io/ios/app/real-ruler-accurate-measure/id6798525657 (this page in markdown: same URL + `.md`)
- Developer: [Om Gawande](https://appshunter.io/developer/6797922970)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 16.4 · 35 MB
- Languages: American English
- Released: 2026-09-10
- Data updated: 2026-10-05

## What is Real Ruler?

Real Ruler turns your screen into a ruler that measures at true physical size.

Most on-screen rulers are wrong because every device has a different pixel density. Real Ruler starts from a database of known devices and lets you calibrate against anything you already own, so a centimetre on screen is a real centimetre.

ACTUAL SIZE, NOT APPROXIMATE
Pick your device or calibrate by hand against a coin, a card, or a ruler you trust. Once it is set, it stays set.

MEASURE FROM ANY EDGE
Place a ruler along the left, right, top or bottom of the screen, or use more than one at a time, so you can line up whatever you are measuring the way that suits it.

GUIDE LINES
Drop a guide line anywhere and slide it into place to mark a measurement, compare two objects, or hold a reference while you work. Clear them in one tap.

TRACK COORDINATES
Turn on the crosshair to read exact positions as you move around the screen.

CENTIMETRES OR INCHES
Switch units instantly. Dark mode included.

NO ACCOUNT, NO INTERNET NEEDED
There is nothing to sign up for. The app does not read your contacts, photos or files, and measuring works entirely offline.

Real Ruler is supported by a single banner ad.

## Is Real Ruler safe?

Not enough ratings yet to assess Real Ruler.

## Is Real Ruler legit?

Real Ruler - Accurate Measure appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Real Ruler is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.0.1 — 2026-09-14

Added multi-language support (10 global languages) with automatic location and system language detection. Added quick in-app language switcher and UI refinements.

### 1.0.0 — 2026-09-10

No release notes.

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| App | Rating | Price | Category |
| --- | --- | --- | --- |
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## More apps by Om Gawande

- [Cector](https://appshunter.io/ios/app/cector/id6798234790)
- [theArrow: Puzzle Escape Go](https://appshunter.io/ios/app/thearrow-puzzle-escape-go/id6809674815)
- [theBlocks: Puzzle Escape Game](https://appshunter.io/ios/app/theblocks-puzzle-escape-game/id6810059476)

All apps by Om Gawande: https://appshunter.io/developer/6797922970

## Related topics

[accurate ruler](https://appshunter.io/ios/topics/accurate-ruler) · [optics pd ruler](https://appshunter.io/ios/topics/optics-pd-ruler) · [digital pd ruler](https://appshunter.io/ios/topics/digital-pd-ruler)

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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 2026-10-05.*