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To download Rulers from the Mac App Store, you need a Mac with OS X 10.6.6 or later. Learn More.


By omnidea

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Rulers is an app that lets you measure, align and inspect everything on your monitor(s).

Rulers allows you to create as many rulers as you want on the entire screen area like most common graphic editors allow on their working areas only.

The guide lines enable you to measure and position objects with precision. Rulers is incredibly useful in many fields, such as computer graphics, desktop publishing and web design.

Rulers can also be used to select a screen area and take a screenshot that is automatically saved to your desktop or copied to system clipboard.

See it in action here:


• Unlimited rulers creation
• Rulers autosave option
• Grid generator
• Multiple units of measurement support
• Multi monitor support
• Take a screenshot of selected area or whole screen
• Magnifier
• Color picker
• Available in 10 languages (English, Italian, Spanish, German, French, Japanese, Hungarian, Dutch, Russian, Czech)

What's New in Version 2.11.8

More reliable color measurement on latest OS X versions.

Minor enhancements and bug fixes.


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Customer Reviews

I have used Rulers for 2 years and enjoyed the experience

Rulers has proven indispencible while styling web sites in browser as a Front End Developer. The app especially helps when I can sit with a designer and show them how acurate the styles are or explain why the element has to be fluid in a responsive site and then make tweaks to padding. I can clearly illustrate the change with an accurate measurement. The app is familiar to Photoshop guides, which is nice. I like the look of the app a lot, simple and intuitive.

I wish you could save preset guides. If the app had this feature it would get 5 stars from me. I often have to delete the guides and reposition for another task. I want to be able to make presets. The only bug I’ve noticed is after you connect to multiple monitors, if you’ve already hidden the rulers they come back, making you have to hide them again. A small gripe for such an awesome app.

I am very disappointed; Request Response

I was searching online to find the top mac apps for web developers, and this is one of those which I found. I loved the idea of a ruler which i could use to measure parts of screen resolution. It was an instabuy for me.

Now that I have used the app, I instantly regret it. First of all, there is no cursor when I am clicked inside of the app. I can see a small, almost invisible cross when I am inside of a white box, however otherwise, I can see not cursor. This makes the program almost unusable. Also, many of the functions that the app uses (which are limited as it sits) are hard to access, especially without a cursor.

I either want this problem to be fixed, or I want a refund; preforably the latter.

Extremely useful tool for text layout

We have been using Rulers in graphic / print / web layout since 2009 or so on a nearly daily basis. It helps to maintain quality and speeds up production at the same time. Rulers was very good before, the 2.11 version is even better/does more. It is especially useful in book pages->spreads and forms. In reference to Mervich's complaint, in version 2.11 (OS X 10.9) has a blue cursor on gray backgrounds.

View in Mac App Store
  • $4.99
  • Category: Graphics & Design
  • Updated: May 20, 2013
  • Version: 2.11.8
  • Size: 4.8 MB
  • Languages: English, Chinese, Czech, Dutch, French, German, Hungarian, Italian, Japanese, Russian, Spanish
  • Seller: omnidea srl

Compatibility: OS X 10.6.6 or later

Customer Ratings

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