RegEx Lab: Regular Expressions

Name: RegEx Lab: Regular Expressions
Rating: 4.8 (172 reviews)
Author: sovio

by sovio

iPhone · iPad

Active Last checked 31 Jul 2026

App Store ↗

Quick verdict

What it is: Store information collected; independent summary not yet available.
At a glance: $0.99

Categories and search queries

Official categories

Developer Tools
Education

AppCorpus categories

Key functions

Function	Availability	Access	Scope	Evidence
Family Sharing	Yes	Unknown	App Store	Store published

Screens

No screenshots collected yet.

Pricing & paywalls

App Store

Price: $0.99

Last verified 31 Jul 2026

Ratings & reviews

App Store

4.8 172 ratings · App Store

5/5Fantastic tool to have in hand
While I am not a pro using RegEx, I quick test on this App before writing something on my computer. It’s easier and faster rather than run the script every time. And since I (sadly) live with my phone next to me it has just become a fun pass time even if I don’t need to them... By doing (rather than reading the theory) you learn so much more and if you are like me that has just started with RegEx, having an app like this will help you in the process of getting your feet wet! Highly recommended

Virgil89 · 31 Jul 2026
5/5Great, full-featured regex tool
I wanted to test a regex but didn’t want to connect to work to get a Linux window. Downloaded this app and voila. You can write your regex and write your data, both of which you can save, and it highlights the matches or does the replacements. It’s got examples and reference information. Font size is adjustable.

T_L_G · 31 Jul 2026
1/5Where is the app and my files? All hidden files!! :(
I was really enjoying this app until I went to backup my Regex files I’ve created in it. The iPad’s Files app cannot find the app or my Regex files. Why make them hidden?! The export option makes a mess of them. If you select Export All you get a file that’s not html but is full of HTML codes and everything is in quotes. If I can’t backup my Regex expressions to iCloud, then the app is not saving me any time. Please make your app visible! AND all of my Regex files I’ve created in your app. I shouldn’t have to buy a Shell to go on an Easter Egg Hunt to find my work. Geesh!! :((

Johne154 · 31 Jul 2026
5/5Great for practicing expressions on the go
I’ve never written a review on the App Store before, but I reached out to the developer and requested an export feature. Sure enough - it shows up in the next update! Regular Expressions are new to me, so it’s important that I can take my learning and practice on the go. This app is perfect for that. No fuss - just works.

Branden Bo · 31 Jul 2026
5/5The best regex editor hands down
This app is a must if you need to whip up a regular expression without wasting time. It allows you to easily craft a collection of regex’s of varying techniques with individual sample source data. The developer is very responsive and generous to give this tool away for free.

big_deeb · 31 Jul 2026

Privacy & accessibility

App Store

Privacy

Data Not Linked to You — Analytics — Diagnostics — Crash Data Developer declared
Data Not Linked to You — Analytics — Diagnostics — Performance Data Developer declared
Data Not Linked to You — Analytics — Usage Data — Product Interaction Developer declared
Data Not Linked to You — Diagnostics Developer declared
Data Not Linked to You — Usage Data Developer declared

Accessibility

No accessibility labels collected yet.

Versions

App Store

1.10.0
• Sorting: By popular demand - Sorting is now here! Until now the regexes were always sorted by the time they were created, with the newest ones appearing on top of the list. Now you can choose the direction of sorting (newest to oldest vs oldest newest) and also sort by name (A-Z or Z-A). Thanks to the user who suggested this feature! (works on iOS 14.0 or later) Also in recent updates: • There's a "Share" button (under regex options) so you can quickly share your regex (along with any flags, test text and replacement text). • You can change the colors of the match highlight (works on iOS 14.0 or later). Try it out under Settings > Themes > Regex Theme.
1.11.0
• The sorting feature now also allows sorting by "Last modified". • The Import screen now has a "Done typing" button to dismiss the keyboard.
1.12.0
• New feature - Previous / Next match - in the Editor you now have a 'Previous' and 'Next' match buttons which highlight the selected match. Also in recent updates: • You can sort the regular expressions list by name, date created or date last modified
1.13.0
• Small tweak to the "Previous" / "Next" match buttons so that they're disabled if there are no results
1.14.0
• When using the "previous / next" match function, the current match is now indicated as a label, e.g. "Match 2 of 8" • Fixed a bug which caused test text highlights (match background, capture group underlining and current match background) to be applied incorrectly, causing missing or misaligned highlights. Thanks to the user who reported this issue. • In the Results lists screen, if there is a selected match, when arriving to the screen the list scrolls to it much quicker
1.15.0
• The export / import feature now also includes the "replacement text" if there is any • The additional buttons now of the keyboard now also has a "Select all" quick shortcut for the test text field
1.15.1
• This is just a maintenance release which updates/replaces some of the third-party frameworks used in the app (for example the UI framework used to display alert messages)
1.16.0
• A big change to how text highlight logic works. It should not provide much better performance and reliability. • Capture group coloring used to start with red, which was too harsh, it is now moved towards the end of the list of colors. • Removed the "Created" message which appears on screen when a new regex is added. • Added a "Select all" button for the test text. • Fixed an issue where some text fields would be too "smart" and change characters such as `...` to `…` or `"` to `“`. • Removed old third-party frameworks and switched to native code, which makes the app size smaller and improves performance.
1.16.1
• Fixed an issue when scrolling large amounts of text and the scroll position might end up inaccurate. Thanks to the user who reported this and provided steps and sample text to reproduce.
1.16.2 · 6 Dec 2024
• Fixed an issue when scrolling large amounts of text and the scroll position might end up inaccurate. Thanks to the user who reported this and provided steps and sample text to reproduce.
1.2.1
• Corrected a typo in the first screen ("Regular Expression", not "Regular Expresson"). Thanks to the user who spotted it and notified me. If you like RegEx Lab, please take a moment to rate or review - it really helps!
1.2.2
• This is a maintenance release. Switched to a new crash reporting framework and updated other third-party frameworks used in the app. If you like RegEx Lab, please take a moment to rate or review - thanks!
1.2.3
• Fixed a bug that meant the review prompt might be shown multiple times in the same day to some users. Apologies to anyone affected by this. If you like RegEx Lab, please take a moment to rate or review - thanks!
1.3.0
Some UI improvements in this release (thanks to users' feedback): • Capture groups colors have been improved (made brighter / more saturated for better visibility) • Capture groups underlining has been made thicker for better visibility • Some buttons have been made wider to be easier to tap (for example the Cheatsheet button) • Some in-app messages have been tweaked to show for slightly longer, allowing time to read (for example when duplicating a regex) Thanks to the users who suggested these (and other) improvements. Your feedback is very valuable! If you would like to make suggestions or comments, please email [email protected] (or use the app > Settings > Contact developer). (No need to disclose your email if you use the in-app method.) If you like RegEx Lab, please take a moment to rate or review - thanks!
1.3.1
This is a small update with iOS 12 optimisations. If you like RegEx Lab, please take a moment to rate or review - thanks!
1.4.0
• Named capture groups By popular demand - added (experimental) support for named capture groups. The native implementation by iOS is limited, so some workarounds are used and things might not work in all cases. If you notice issues, you can provide feedback via the Feedback menu. If you like RegEx Lab, please take a moment to rate or review - thanks!
1.5.0
• In the matches list screen there is now an option to copy all matches to the clipboard. Thanks to the user who suggested this feature. If you like RegEx Lab, please take a moment to rate or review - thanks!
1.5.1
• Tweaked some fonts and layout for better readability If you like RegEx Lab, please take a moment to rate or review - thanks!
1.6.0
• You can now export / import all your regular expressions. This could be useful as a backup or if you're moving to a new device. If you like RegEx Lab, please take a moment to rate or review - thanks!
1.6.1
>> New feature << • You can now export / import all your regular expressions. This could be useful as a backup or if you're moving to a new device. Other small fixes: • Fixed a crash when trying to send user feedback. • Fixed a visual issue in dark mode where some pop-up messages had dark text on dark background, making them very hard to read. Thanks to the users who spotted these bugs and contacted me! If you like RegEx Lab, please take a moment to rate or review - thanks!
1.7.0
>> New feature • RegEx Lab now supports Dynamic Type - the Text Size you choose under iOS Settings > Display & Brightness > Text Size, or in the Accessibility Settings. The older "Text Size" preference from inside the app is gone - with this new approach you can choose much larger text sizes. >> New feature • You can now export / import all your regular expressions. This could be useful as a backup or if you're moving to a new device. If you like RegEx Lab, please take a moment to rate or review - thanks!
1.7.1
• If the app is closed by iOS in the background, the text you've typed is saved (it used to be lost). Thanks to the user who suggested this improvement. If you like RegEx Lab, please take a moment to rate or review - thanks!
1.8.0
By popular demand - now you can change the colors of the match highlight (works on iOS 14.0 or later). Try it out under Settings > Themes > Regex Theme. If you like RegEx Lab, please take a moment to rate or review - thanks!
1.9.0
• There's now a "Share" button (under regex options) so you can quickly share your regex (along with any flags, test text and replacement text). Thanks to the user who suggested this feature. Also in recent updates: • By popular demand - now you can change the colors of the match highlight (works on iOS 14.0 or later). Try it out under Settings > Themes > Regex Theme. If you like RegEx Lab, please take a moment to rate or review - thanks!
1.9.1
• Duplicating a regex now also copies over the "replace text" field Also in recent updates: • There's now a "Share" button (under regex options) so you can quickly share your regex (along with any flags, test text and replacement text). • You can change the colors of the match highlight (works on iOS 14.0 or later). Try it out under Settings > Themes > Regex Theme. If you like RegEx Lab, please take a moment to rate or review - thanks!

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Alternatives

La Terminal: Mosh & SSH Client — Same category + similar ratings

Availability by market

Data quality & evidence

Page completeness: Live store listing
Last verified: 31 Jul 2026
Sources: App Store

Independent summary has not been published yet.
Screenshots: not yet collected

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Compare RegEx Lab: Regular Expressions with La Terminal: Mosh & SSH Client.

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