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Rul3r

Rul3r

Ruler, Altimeter and More

1K ratings
87 reviews
With Ads
πŸ”§ Utilities
πŸ“Š Productivity
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • June 6, 2015
  • October 6, 2025

Features

Developer

YOYASOFT LLC
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Rul3r screenshot #1 for iPhone
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Rul3r screenshot #6 for iPhone
iphone
ipad
🧾$2.99
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About

This utility app provides a portable ruler for on-the-go measurements. It also includes a suite of additional tools like a protractor, spirit level, and various meters for diverse measurement needs.

βœ“Portable ruler
βœ“Protractor
βœ“Spirit level
βœ“Altimeter
βœ“Decibel meter
βœ“Plumb line
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What's New in Rul3r

1.21

October 6, 2025

Ruler correction for some iPad models

1

In-App Purchases

$2.99

Remove Ads

Remove ads in the app

User reviews

Most RecentHighest RatedLowest Rated

Actually Surprisingly GREAT!

This is what apps used to be and should be. It does a lot of good useful functions quite easily. There are unobtrusive adds and it has never begged me or tricked me into paying. Most measurements apps are complete scams and virtually useless.
Well done! Do you make other apps?
ALERT44ALERT44

Is a bit off on how big an inch is on my iPhone 13

Maybe I’m doing something wrong but I compared it to a real ruler and turns out that jawn been lying to me about how big my dih is and had me thinking I had a chode
IHATEROBLOX6741IHATEROBLOX6741

Very handy but hard to close the app on my iPhone

Not sure how to close the app on my iPhone I’ve succeeded in the past, but unsure how I did it so I struggle every time.
WishywashywendyWishywashywendy

Great App!! Love simplicity ! Easy to use also informative.

Easy to use and accurate. Just what I was looking for in a measuring app.
GazingleborpenGazingleborpen

Minimizing, useless

Keeps minimizing when u put something on top so you press and hold, WHY???
Sam H1Sam H1
See 82 more reviews

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FAQ

What does Rul3r do?

Rul3r is a utility app that provides a portable ruler on your phone for measuring lengths. It also offers a variety of other measurement and utility tools.

What are the key features of Rul3r?

Key features include a portable ruler, protractor, plumb line, spirit level, elevation and air pressure meter, decibel meter, and an ordinal date converter.

Is Rul3r free to use?

The app is free to download and use, but it does contain advertisements and offers in-app purchases for additional functionality or to remove ads.

What kind of devices is Rul3r compatible with?

The description does not specify exact compatibility requirements, but as a mobile application, it is designed for smartphones and tablets.

When would I use Rul3r?

You would use Rul3r when you need to quickly measure an object without a physical ruler, check if a surface is level, measure angles, or monitor environmental factors like air pressure or sound levels.