Ruler

I can vouch for the accuracy of this ruler (using math). It's easy enough to find phone specs with a search. Take your screen size (a diagonal) and the width of your phone. using the length is useless as it includes buttons & speakers. Then with a bit of high school geometry you'll have your answer. For instance, I use a GS6Edge. 5.1" screen & 2.76" width. (5.1^2-2.76^2=?^2) Came to roughly 4.3" of actual screen length. Cross checked that against the ruler display, & bingo! Pythagorean Theorem bitches.

The measurements start off wrong and you have to adjust it yourself so you need a real ruler anyway to check if you have them right, so completely worthless I don't know what they were thinking when they made it

Overall is ok.. but abit not accurate.. mistake ±1mm

I had no problems whatsoever. It was completely accurate to begin with. Just make sure you are using the correct unit of measurement (inches or centimeters).

It sucks because it is the badest ruler app i ever did

Used it to measure my wife's ring with precision in order to make sure I got the new one to the right size. Great app.

Its cm not accurate

It's awesome my favorite thing to use when i want to measure somthing

وجود زر والضغط عليه لتحديد المقاس بالضبط

Not exact reading

Only 3 inches shown

Measures well.

Whats the point of being able to zoom in/out

Easy use and beautiful interface.

Not correct

Useful and simple tool

bad

Ads on a ruler app? Really?

The inch unit NOT corrected. The cm function seems to work ok. You have to calibrate it with a real ruler or tape and hope one of the presets fits your screen. Could be useful if fixed.

Always defaults to mm, and literally only measures the size of your screen, can't go any further

This app goes by your phone size. If you have a tiny phone it will be super inaccurate. Same for a tablet.

Learn fractions!!! The inch fractions are totally off..

Can't seem to fine tune the app enough to be accurate. Tested against a slide rule Galaxy S5

Thanx a lot, simply superb and no confusions at all...

I can measure my penis with this 11/10-IGN

Useless. Absolutely useless. This is only good for less than 6 inches unless you SOMEHOW have some way to calibrate it because it lets you zoom in and out of the ruler

Use your phone as ruller, yes it works. The scale is really good. Now i can use my phone as ruller. Thanks.

After a few minutes of use the end button stops moving and you can't move it again until you exit the app and reopen it. PLEASE FIX!

The measurements start off wrong and you have to adjust it yourself so you need a real ruler anyway to check if you have them right, so completely worthless I don't know what they were thinking when they made it

No matter how I try, can't get the start point to zero cm. and its not accurate anyway. piece of crap

Worked for a few minutes. Then it froze up and will not let me use it.

Ads suck, save feature is annoying and can't be cleared, and it's easy to crash.

Nice slider allows measurement of things on screen thanks!

No mm.

I have no ruler in home. This app really help. But do need improvements. To not be so slow. I always in rush, and ruler app really slow.

Whats the point of being able to zoom in/out

Very good idea!

Good

I use it because it is helpful

Is not accurate