Support

For help with Underneath, its lessons, or a purchase, contact us by email.

Please include your device model, iOS version, app version, the lesson involved, and steps to reproduce the problem. Screenshots can help. Hide personal information and do not send passwords, payment card details, or Apple Account credentials.

Getting started

Open the first lesson and change the words in the example app. Follow the guided steps and watch how the code and preview connect. After completing a lesson, revisit its concept in the card deck.

Purchases and restoring access

Try the first 3 lessons. Lessons 4–10 unlock with a one-time in-app purchase, not a subscription. The App Store price shown in the app is the price for your region.

If you purchased the course but it is locked, check that you are using the Apple Account that made the purchase, then choose “Restore Purchases” on the course unlock screen. Purchases and restoring access require an App Store connection. Pending purchases unlock after Apple approves them.

Request a refund through Apple’s Report a Problem page. Apple decides the outcome.

Where is my progress saved?

Completed lessons, the plain-language preference, and your saved remix stay on your device. There is no in-app account or cross-device progress sync. Resetting progress in the card deck clears completed-lesson records and does not revoke an App Store purchase.

Do the lessons publish real apps?

The network, build, installation, and store release activities are teaching simulations. They do not compile executable code, install another app, or upload to App Store Connect. The full-course App Store purchase is a real purchase.

Requirements and languages

Underneath supports iPhone running iOS 17.6 or later, in English and Simplified Chinese.