SUPPORT & DOCUMENTS

Underneath

Change the code. Watch the screen respond. Explore how apps work through 10 hands-on lessons, with no programming experience required.

Support

Help with lessons, saved progress, purchases, and restoring access. Get in touch.

Privacy policy

How local data, App Store purchases, and support emails are handled.

Available in English and Simplified Chinese. Network requests, builds, installation, and release steps within lessons are teaching simulations. Full-course purchases use the Apple App Store.