I've been using Patterns for a couple of years now, and I can definitely recommend it. https://itunes.apple.com/gb/app/patterns-the-regex-app/id429449079?mt=12

I've been using Patterns for a couple of years now, and I can definitely recommend it. https://itunes.apple.com/gb/app/patterns-the-regex-app/id429449079?mt=12 https://itunes.apple.com/gb/app/patterns-the-regex-app/id429...