Ruler - CM, MM, Inches

Name: Ruler - CM, MM, Inches
Rating: 3.5 (79 reviews)
Author: Xi'an 7kit Technology Co., Ltd.

By: Xi'an 7kit Technology Co., Ltd. App

CM, MM, In. Measure Anything.

Overview

Version:

Last updated: 2025-10-03

Features & Capabilities

Precision measuring on your phone: Ruler - CM, MM, Inches offers Smart Multi-Mode Measure with dual-unit display (cm/mm, inch/fractions), flexible starting points, and full-direction coverage for horizontal, vertical, or diagonal measurements.

Reliable accuracy and convenience: Auto-calibration keeps error ≤1%, screen lock prevents slips, and an optional VIP subscription can provide an ad-free experience. Includes a 2.54m ultra-long scroll ruler to extend reach.

User Growth & Download Statistics

App Education Design Developer Tools

By:

Xi'an 7kit Technology Co., Ltd.

Rating:

3.50

(79)

Version:

26 Last updated: 2025-10-03

Version code:

878317676

Creation date:

2015-08-12

Compatible devices:

Size:

4.45MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-07-20

Compare stats and ranking:

Ranking

# 184,421 ▼ 5,630

Other rankings

#55 in rule keyword 8 ▲

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:

Xi'an 7kit Technology Co., Ltd.

Apple Apps Store

https://apps.apple.com/us/app/ruler-cm-mm-inches/id1022857549

Website:

https://7kit.cn/app/id1001/

User Reviews

Users describe Ruler as a simple, flexible tool for quick measurements, with support for cm and inches (or both) and handy extras like a protractor and level. However, multiple reviews cite intrusive ads, inconsistent measurements and missing fractional-inch options, plus UI annoyances such as the finger obstructing measurements and misalignment when both units are enabled. Some praise the sturdy interface and developer responsiveness, while others report accuracy issues (e.g., 1/4 vs 1/8, decimal inches) and ad/updates problems. Overall, it's useful for quick visual sizes but unreliable for precise inch work and ad-free usage.

Pros

Simple, no-frills ruler that's easy to use.
Flexible unit options: cm only, inches only, or both.
Useful for visualizing sizes on screen and for small objects/scale modeling.
Responsive developers who listen to feedback and fix issues quickly.
Includes extra tools (protractor, level) for added utility.

Cons

Ads are intrusive and can overwhelm the interface; some users report ads reappearing even after paying.
Accuracy issues and inconsistent inch subdivisions (problems with 1/2, 1/4, 1/8, 1/16, or decimal inches).
UI/interaction problems, such as the finger obscuring the measurement and misalignment when both units are displayed.
Lack of or inadequate support for common fractional inches led to frustration among inch users.
Some reports of bugs or odd behavior (e.g., black screen) and ad-related complaints.

Recent reviews

They literally put ads over the measurements, like, it’s a ruler app that hides the ruler to advertise to you. Hilariously bad.

by Cl*****, 2025-01-12

This is a very simple, flexible, and easy to use ruler app. No frills, just ruler. I like that you can have just cm or just inches or you can have both. Only thing I’d change is that when they have both it doesn’t line up at zero. Otherwise it would be 5 stars. Under the settings there’s a way to remove the ads in kid mode.