Screen Ruler: Measure Length

By: 向阳杨 App

CM, MM & Inch Measuring Tool

Overview

Version:

1.9.5

Last updated: 2026-08-18

Ranking

#251,533 ▼ 74

Overall

Features & Capabilities

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

User Growth & Download Statistics

App

By:

向阳杨

Rating:

3.70

(24)

Version:

1.9.5 Last updated: 2026-08-18

Version code:

888727194

Creation date:

2016-11-11

Compatible devices:

Size:

18.93MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-09-03

Compare stats and ranking:

Ranking

# 251,533 ▼ 74

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

向阳杨

Apple Apps Store

https://apps.apple.com/us/app/screen-ruler-measure-length/id1174757735

Website:

https://getruler.app/en/

User Reviews

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).

Recent reviews

🌟🌟🌟🌟🌟 I've tried several screen ruler apps before, but this one stands out for its precision and smooth user experience. The interface is clean and intuitive, making it perfect for quick measurements on the go. I especially appreciate how easy it is to switch units and calibrate the ruler to my screen. Whether I'm measuring small objects for design work or just checking dimensions out of curiosity, this app gets the job done perfectly. Highly recommended for anyone who needs a reliable digital ruler!