3D Mechanic Kids: Help for grown-ups

Last updated: 13 October 2026

Contact us: support@3dmechanic.app. Write to us with a problem, a question or an idea.

What's free, and what the Whole Garage opens

• The Wheel & Suspension is free: take it apart, build it back and play with it.
• The Whole Garage is one in-app purchase. It opens the Engine, the Gearbox, the Driveshaft & Differential, the Brakes and every model we add later. Pay once, no subscription.
• Without it, the other models can only be spun round.

Buying the Whole Garage

1. On the welcome screen, tap "Ask a grown-up to unlock" on a locked model. Or tap the gear, then "Unlock or restore the Whole Garage".
2. Answer the grown-ups' question.
3. Tap "Unlock".

• On a child's Apple Account with Ask to Buy turned on, the request goes to the parent. Once they approve it, the garage opens by itself.
• With Family Sharing, one purchase covers everyone in your family group.
• Got a code? Tap "Redeem a code" on the same page.

Restoring it on another iPhone or iPad

1. Sign in with the Apple Account that bought it, or one in the same Family Sharing group.
2. In the app, tap the gear, then "Unlock or restore the Whole Garage", and answer the question.
3. Tap "Restore purchase".

Refunds: Apple handles payments. To ask for a refund, go to reportaproblem.apple.com.

If something isn't working

• Update the app from the App Store.
• Close the app fully and open it again, or restart the device.
• Still stuck? Email support@3dmechanic.app and tell us which device you have and what happened.

Requirements: an iPhone or iPad with iOS or iPadOS 18.0 or later. No internet connection is needed after installing, except to buy or restore the Whole Garage.

Privacy: the app collects no data. Read our privacy policy.