Patterns - The Regex App

Developer: Nikolai Krill

Current Version: 1.1.2

Last Updated: 9 months ago

Download Size: 1.4 MB - Download


Patterns is a simple yet powerful tool for working with regular expressions. Build great patterns quickly and effortlessly with syntax coloring, and with matching and replacing occurring in real time.


- Regular expression syntax coloring makes it easy to see how your pattern is interpreted by the regex engine. No more confusion about what needs to be escaped.
- See matches and replacements in real time while you edit your pattern.
- Copy match and replacement code snippets of your pattern for quick use in a number of different programming languages.
- The built-in regular expression reference sheet helps you find the piece of regex syntax you need.


Release Notes:

- Highlighting of matching parentheses for capture groups in regex editor
- Bugfixes and improvements
- Fixes an issue where quotes and dashes are substituted in the text fields
- Support for macOS 10.12 Sierra
- Hover over a match to view the contents of capture groups
- Restoration of app state on quit and relaunch
- Bugfixes


Most Helpful Reviews

Version 1.0.1
Review by hoop33

Takes at least some of the sting out of regexes - I love regular expressions; when applied correctly, they can greatly simplify your code as you search for/parse/replace text. They can be a real pain, though, as they become more complex. Patterns make getting your regexes correct a lot easier. The interactive highlighting makes debugging your regexes simpler--you can back up and go forward to see where you've gone awry. Great tool. Would love to see support for capture groups.

Found helpful by 6 out of 6 people
Version 1.1.2
Review by a developer98655

crash crash crash crash crash crash crash crash crash - what can I say? it crashes all the time.

Found helpful by 2 out of 4 people

More Reviews for Current Version

Version 1.1.2
Review by I like to calculate

Enjoyable Way Experiment & Learn - I’ve used regular expressions off and on for the past few decades - they are indispensable for certain tasks, and huge time savers in others. But I don’t use them constantly, which means I often need a quick refresher to get things working just right. That’s where this nicely crafted app comes in. I find it a quick, and intuitive way to re-familiarize myself with the arcane workings of regex expressions. My compliments to Nikolai Krill for creating this gem!

Found helpful by 4 out of 4 people
Version 1.1.2
Review by DCMacHead

Lots of potential, but very aggravating - I got this app to assist with constructing Regex terms. While it holds a lot of promise, there are two critical flaws. 1) There’s no way to save your work. By itself, that’s not a big deal. It becomes a big deal when the app crashes for no apparent reason. I’ve had the thing crash twice in the past 15 minutes after I’m close to getting a term done. If I had hair to pull out, I would. I hope the developer has Crashlytics installed so he/she can fix whatever the problem is.

Found helpful by 3 out of 3 people
Version 1.1.2
Review by Bill9583

Good… except for the fact that it crashes... - Very nice interface and intuitive… but after several sudden application crashes on my MB Pro running El Capitan, I have had to give up and purchased a competitor’s application instead.

Found helpful by 2 out of 3 people