Regexcellent
RegexcellentiPhone & iPad, Mac, Android phones & tablets, Apple Vision Pro

Learn regex by writing it.

An interactive regex course, a live playground, and short challenges. Learn a pattern, try it yourself, and see why it works.

iPhone & iPad

iOS / iPadOS 18 or later

Download for iPhone & iPad

Made by Mihail Duchev

Regexcellent lesson with a typed pattern, highlighted matches, and answer feedback
Regexcellent lesson with a typed pattern, highlighted matches, and answer feedbackiPhone / iPad

What you can do.

Learn by making matches

Work through 40 interactive lessons in eight modules, from your first literal match to groups, lookarounds, and practical recipes. Get hints when you need them.

See what your pattern does

Experiment in the live Playground. Inspect captures, explore token explanations, and save useful patterns on your device.

Make every character count

Try 24 regex golf challenges and a daily rotating puzzle. Find a working solution, then see how short you can make it.

Bring the reference with you

Look up regex tokens and try their examples. Export supported Swift, Kotlin, JavaScript, and Python snippets with regex-engine differences called out.

Good to know.

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Where can I install Regexcellent?

Download Regexcellent from the App Store for iPhone, iPad, Mac and Apple Vision Pro, or from Google Play for Android phones and tablets. Check the store for availability on your device and in your country.

Download for iPhone & iPad · Download for Mac · Download for Apple Vision Pro · Get it on Google Play

Is there a native Apple Vision Pro edition?

Yes. Regexcellent is available for Apple Vision Pro with visionOS 2 or later. It includes the course, Playground, reference and challenges. Check the App Store for the version and availability in your region.

Do I need an account or internet connection?

The course, challenges, reference and regex engine work offline without an account. Optional sync needs internet and your iCloud or Google account; optional Apple tips need an App Store connection, and Android 1.0.3 adds a Ko-fi tip link that opens in your browser. You can keep learning without either.

Are any lessons behind a paywall?

No. Every lesson and feature is free, with no ads or subscriptions. Apple version 1.0.1 and later can offer optional one-time tips that unlock nothing. Android 1.0.3 adds optional one-time support through Ko-fi and Stripe in your browser, with no feature unlocks. Update availability depends on your store and region.

Does my progress sync between devices?

Version 1.0.1 and later supports optional sync of learning progress and saved patterns: private Google Drive app storage between Android devices, or iCloud between Apple devices. Turn it on in Progress and use the same provider account on each device. Apple and Android do not sync with each other. Playground drafts and preferences stay local. Version 1.0 has no sync; update availability varies by platform and store.

Will an exported pattern work in another language?

Regex engines differ. Code export warns about differences and may refuse unsupported translations. Always test exported snippets with your real input.

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