Mac App Store

Mac App Store

Mac App Store is the simplest way to find and download apps for your Mac.

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


By MotionObj

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Regular expression testing tool that is easy to use.

- Dynamic highlighting of matches while the regular expression or sample text is being modified
- Automatic escaping of special characters when copying a regular expression
- Automatic unescaping of special characters when pasting a regular expression
- Supports capture groups
- Supports matching options such as case-insensitive matches
- Fast and Dead-simple to use

See the tutorial at

Please refrain from sending your bug reports or feature requests using the App Store. Instead, to ensure a direct response from us, send them to We’re always happy to help our users and receive your comments.


Screenshot 1

Customer Reviews

Software that makes me smarter! How great is that?

This little gem has really expanded my regular expression horizons. The instant feedback I get from trying things out makes it effecient for me to create more complex and subtle regular expression setups than I ever could before. (Not that I didn't think of complex things to do before ... but the whole process of writing a PHP test page, uploading it to the server, checking the browser to see what happened, wondering where I went wrong, etc., took forever.) Of course I'll be happy if the app continues to develop, with more bells and whistles and smooth features, but that's not enough to stop me giving it 5 stars right now. It meets a very specific purpose extremely well.

Wish I had this sooner!

If only I had a tool like this when I was first learning regular expressions! This will surely save me hours of tinkering in the future. Well worth $4.99 for anybody who works with regex.

Love it...only 1 issue

A great app!!! Using it all the time now.

Would be 5 stars except for the fact that the text box does not scroll. If the pasted text is longer than the available space it sure would be nice to scroll.

View in Mac App Store
  • $4.99
  • Category: Developer Tools
  • Released: Mar 18, 2011
  • Version: 1.0
  • Size: 0.1 MB
  • Language: English
  • Seller: Hwee Boon Yar

Compatibility: OS X 10.6.6 or later

Customer Ratings

Current Version: