STEM for Kids: Build Machines 4+

Learning Games for Engineering

Tappity, Inc.

Designed for iPad

    • 3.3 • 13 Ratings
    • Free
    • Offers In-App Purchases



Learn all things machine with Haley, our child-friendly science teacher, on dozens of interactive lessons.

Build your own rocket, run real science experiments, answer trivia, and much more!


8 reasons why parents and kids adore Tappity apps:

• You get to interact with a real person, Haley, our science expert!
• You get to learn by reading, listening, and touching. Our app is 100% interactive and 100% narrated!
• You're learning real science. Our lessons align with the Next Generation Science Standards (NGGS).
• You learn by play, just like you would in a game!
• You get to test yourself knowledge with fun science trivia based on what you've learned!
• You're safe from 3rd party advertisements.
• You can play offline. Perfect for long waits, car or plane rides.
• You can try it for free now! No trials or extended subscriptions.


In-App Purchases

This app is free to try! The first few lessons are always free. If you'd like to unlock all of our content, there will be a one-time payment.


Feedback and Support:

Have feedback or need help? Contact us at any time:


Who are we:

Tappity believes in the power of storytelling and interactivity to make learning science fun. We encourage play by encouraging touch on every page and bringing in science experts to guide your child. Tappity is currently used across 20 countries, and we’ll always offer an ad-free and safe environment for your children. Learn more about us at

Privacy Policy:

Terms and Conditions:"

Ratings and Reviews

3.3 out of 5
13 Ratings

13 Ratings

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It’s ok but needs more free stuff because I tried to play it and it only lets me play three games 🥺

App Privacy

The developer, Tappity, Inc., has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.

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