RegEx Knife

Entered one regex and app crashed. Now the app crashes every time I run it.

A very nice way to test out regexes on your iPad. The visual feedback for match groups is superb. Easily the best regex app for iOS.

After saving my own expression, when I click a saved example it loads the wrong example.

When there are Chinese characters in the regular expression, they will not be displayed.

Developer should integrate this into shortcuts where it will actually be useful for different types of extractions and maybe a different more up to date UI

It’s nice for simple regexes. Unfortunately, I wanted to use a conditional substitution, but the syntax for that varies by engine and the app doesn’t specify what uses. Would be 5 stars otherwise.

As mentioned in another review nearly a year ago, this app does not work in dark mode. Black on black text is completely unreadable.

You fixed the last bug I mentioned and I really like this app layout. Found two new bugs. One is related to dark theme on iPhone. I can’t see text types in on first type. It is all black on black. It fixes itself after a bit of fiddling. Second is more important. Creating a new RegEx that takes the untitled name then backing out, rand naming it to String.prototype.string and then it reverted to text from a previous entry. When opened it showed different regex than the overview page. It did this a few times until it auto corrected itself. I have screenshots. I can’t reproduce this. These bugs seem to be related to how the app saves on load or on exit?

Excellent tool for fine tuning regular expressions with clear visual feedback. The custom keyboard keys are equally clever, but turn invisible in Dark Mode. Fortunately it's usable without them.

It’s awesome! I wish I would look up simple RegEx documents in the app.