Reviews of Ruler®

By: Tue Nguyen Minh App

List of user reviews and ratings for Ruler®

Total ratings

4.30 (Rating count: 35,086)

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Review summary

The app’s core idea and clean design are praised, but frequent complaints focus on monetization barriers (paywalls and subscriptions for basic units), ads, an unusable reference-object method, and accuracy issues. Users also report glitches and feature removals after updates, undermining reliability. Overall, the concept and visuals are liked, but paid access and reliability concerns dominate.

Pros

Handy two-unit ruler (inches and centimeters) with a simple, easy-to-use interface.
Sharp, professional-looking graphics.
Privacy-friendly feel (users note it doesn’t appear to collect data).

Cons

In-app paywalls to access inches/centimeters, often via subscriptions or upfront upgrades.
Ads in the free version and perceived high cost of upgrades.
Reference object measurement feature is unusable or impractical.
Measurements can be inaccurate (reported off by up to ~10%).
Updates/monetization changes remove features or cause glitches, frustrating users.

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User Reviews

Recent rating average: 1.20

All time rating average: 4.30

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73% (38)

Date	Author	Comment
2026-06-15	yy*****	Like my title said they had it in cm and I couldn't change it to inches without paying. I even tried to see how many cm are in inches but it was really hard to tell. It's free and no ads but still🙄
Like my title said they had it in cm and I couldn't change it to inches without paying. I even tried to see how many cm are in inches but it was really hard to tell. It's free and no ads but still🙄
2026-06-03	be*****	Most basic app ever, charges money to measure in inches.
Most basic app ever, charges money to measure in inches.
2026-04-25	Ar*****	This dev wants you to pay for inches. He can take 12 inches right up his @$$
This dev wants you to pay for inches. He can take 12 inches right up his @$$
2026-04-16	K-*****	The app has very sharp and professional looking graphics, which is what made me think I should take a risk on buying the application. Unfortunately the reference object concept is completely unusable. If I want to get a measurement it has to be something small enough that you can drag lines around to mark a reference object. Really? Am I supposed to tape a quarter to the side of my garage and then try to zoom in enough to put the reference lines on the quarter? I believe they are simply counting on the fact that you can't get a refund and even if you could wouldn't go through the hassle for $1.99. Don't bother.
The app has very sharp and professional looking graphics, which is what made me think I should take a risk on buying the application. Unfortunately the reference object concept is completely unusable. If I want to get a measurement it has to be something small enough that you can drag lines around to mark a reference object. Really? Am I supposed to tape a quarter to the side of my garage and then try to zoom in enough to put the reference lines on the quarter? I believe they are simply counting on the fact that you can't get a refund and even if you could wouldn't go through the hassle for $1.99. Don't bother.
2026-04-10	Li*****	I have used this handy ruler with inches on one side + centimeters on the other. Very handy! Now it only shows centimeters on both sides. If I still want inches I must pay a regular fee. Uh—no. I need no special features; just a simple ruler. I’m deleting it.
I have used this handy ruler with inches on one side + centimeters on the other. Very handy! Now it only shows centimeters on both sides. If I still want inches I must pay a regular fee. Uh—no. I need no special features; just a simple ruler. I’m deleting it.
2026-03-16	By*****	You have to pay to upgrade to get inches and centimeters
You have to pay to upgrade to get inches and centimeters
2026-03-16	Ol*****	Most useful feature hidden behind a paywall. What a joke.
Most useful feature hidden behind a paywall. What a joke.
2026-03-12	GA*****	Piece of garbage act hungry for subscriptions to use a RULER
Piece of garbage act hungry for subscriptions to use a RULER
2026-03-04	Jo*****	Can’t even switch from cm to inches without paying
Can’t even switch from cm to inches without paying
2026-02-10	Un*****	Can’t use non metric without paying. Filled with ads.
Can’t use non metric without paying. Filled with ads.