Ruler 2.0 - inch, mm, cm

Name: Ruler 2.0 - inch, mm, cm
Rating: 3.9 (205 reviews)
Author: Oleg Osipov

By: Oleg Osipov

High measurement accuracy

Features & Capabilities

Ruler 2.0 is an on-screen ruler designed for high-precision measurements on iPhone and iPad. Switch between inches, centimeters and millimeters, pick from three color themes, and measure either the length or the width and length together. Tap the measurement result to adjust it manually, and pan with two fingers anywhere on the screen for even finer accuracy. Save each measurement as a photo directly to your Camera Roll and share it with friends.

Designed for quick, accurate measurements in crafts, design, education, and everyday tasks, Ruler 2.0 combines simplicity with precision. The app supports both metric and imperial systems, making it a versatile tool for any measuring need and is free to use.

User Growth & Download Statistics

App Education Photography

By:

Oleg Osipov

Rating:

3.90

(205)

Version:

2.0.8 Last updated: 2025-11-14

Version code:

879682393

Creation date:

2018-02-13

Compatible devices:

Size:

15.14MB

URLs:

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-29

Compare stats and ranking:

Ranking

# 121,989 ▼ 273

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:

Oleg Osipov

Apple Apps Store

https://apps.apple.com/us/app/ruler-2-0-inch-mm-cm/id1345983397

User Reviews

Users report that Ruler 2.0 was previously accurate and useful, with a feature-rich design, but current versions suffer from serious scaling and accuracy problems on newer iPhones/iPads. The core issues are inaccurate measurements, lack of user-adjustable scaling, and outdated updates that fail to support modern devices. A few reviews still praise its features and past performance, suggesting potential if the developers release timely fixes.

Pros

Feature-rich with a settings suite that matches what users want in a ruler app.
Useful and generally well-regarded; described as very useful.
Longstanding favorite and trusted by users for years.
Historically accurate on older devices, showing potential if updated for modern screens.

Cons

Measurements (inches, centimeters, millimeters) are often off by a factor, reducing trust.
Scaling does not adapt to newer devices (high-DPI screens) and the app has not been updated for current models.
No built-in way to adjust scale or screen size manually; settings do not offer a fix for this issue.
Long gaps between updates; last update was two years ago, with reports of the app becoming unusable on newer devices.

Recent reviews

This app was a very good app, but it’s completely unusable now if you’ve got a large max phone, I think it’s the high dpi screen that makes the inches way too small. The inches are about the size of a centimeter in this app. It needs to be updated to support high DPI large phones

by Lo*****, 2025-05-18

hi wrong dimension measurement on iphone16 please solve

by Al*****, 2025-04-13

It’s not accurate, by about half of whatever unit of measurement your trying to check. Can’t find anywhere in the settings to adjust for screen size or anything. When I tapped the “support” button here in the App Store, it took me to a shady link: apple security said it was someone imitating a legit website.:. So that should tell you everything.