# Screen Ruler: Measure Length

> CM, MM & Inch Measuring Tool

Canonical page: [https://chrome-stats.com/d/id1174757735](https://chrome-stats.com/d/id1174757735)

## Overview

- **ID:** `id1174757735`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** 向阳 杨
- **Category:** Utilities
- **Rating:** 3.70 / 5 (24 ratings)
- **Version:** 1.9.5
- **Last updated:** 2026-08-18
- **First published:** 2016-11-11
- **Size:** 19 MB
- **Data as of:** 2026-09-05
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/screen-ruler-measure-length/id1174757735)
- **Website:** [https://getruler.app/en/](https://getruler.app/en/)
- **Privacy policy:** [https://getruler.app/en/privacy/](https://getruler.app/en/privacy/)

## Description

Measure small objects directly on your iPhone or iPad screen. Calibrate once, switch between centimeters and inches, and align edges with the magnifier.

Turn your iPhone or iPad into a calibratable digital ruler for measuring small objects directly on the screen. Screen Ruler supports centimeters and inches, magnifier-assisted alignment, and haptic feedback.

Measure Small Objects on Your Screen

Use Screen Ruler for stationery, frames, craft materials, and other small objects that fit along your device screen. Place the object directly on the screen, move the measurement marks to its edges, and read the length.

Core Features

• Calibratable ruler: Match the scale to an object of known length and save calibration for your device.
• CM and inch scales: Switch between centimeters and inches for everyday measurements.
• Magnifier assist: Align measurement marks with object edges more confidently.
• Haptic feedback: Feel subtle feedback while adjusting the marks.

How to Get More Reliable Results

For best results, place the object directly on the screen and check the scale against a known length. Calibrate the ruler if you notice an offset.

Accuracy and Limitations

Screen Ruler is designed for short, everyday measurements. Accuracy depends on device calibration, screen placement, and how precisely the marks are aligned. It does not use the camera or AR and is not intended for measuring rooms or large objects.

Feedback: ankek1er@gmail.com

## Rankings

- #251,740 — Overall

## Review summary

Users praise Screen Ruler for its simple, intuitive interface and portability for quick measurements. However, accuracy is inconsistent across devices, with several reviews reporting cm/inches readings that don’t align with real-world rulers. Overall, the app is useful for casual on-the-go tasks, but measurement reliability appears device-dependent.

### Pros

- Easy to use with a clean, intuitive interface.
- Accurate/precise readings on some devices.
- Portable/on-the-go tool for quick measurements.

### Cons

- Inaccurate and inconsistent measurements across devices (cm/inches off, readings don’t match real rulers).

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1174757735)