Explore the playful side of physics!

Experiment with levers, pulleys, inclined planes, wedges, wheel and axles, and screws. Discover the invisible forces at work. Alter and test machines to destroy a castle, make music, send satellites into orbit, and more!

“I just love how apps like these get kids genuinely excited about science." — COOL MOM TECH

*** App Store Editor's Choice ***
*** Parents’ Choice Gold Award winner ***

Simple Machines is No. 4 in Tinybop’s Explorer’s Library. Each Explorer’s Library app lets kids explore the invisible and awesome wonders of STEM. Kids (and kids at heart!) develop foundational science literacy.

* Explore 6 simple machines: levers, pulleys, inclined planes, wedges, wheel and axles, and screws.
* Experiment with real world physics.
* Alter each machine.
* Learn about force and motion, actions and reactions, inputs and outputs, conservation of energy, mechanical advantages, and tradeoffs.
* Sophisticated sound design rewards experimentation.
* Original artwork by James Gilleard.
* Learn new vocabulary in 40+ languages with interactive labels.
* Intuitive, safe, and kid-friendly design.
* Entertaining for kids and adults alike — play and learn together!
* Get free activity sheets at

FREE handbook
Our expert-reviewed handbook is full of facts, interaction hints, and discussion questions to support learning in this app, in the classroom or at home. Download in your app or at:

Privacy Policy
We take your and your child’s privacy seriously. We do not collect or share personal information about your child. We do not allow any third-party advertising.

When the camera, microphone, and other services are used within an app, your information is not collected or distributed outside of the app.

Read our complete privacy policy at

Tinybop, Inc. is a Brooklyn-based studio of designers, engineers, and artists. We make toys for tomorrow. We’re all over the internet.
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Psst! It's not Tiny Bop, or Tiny Bob, or Tiny Pop. It's Tinybop. :)

What’s New

Version 1.0.8

Minor improvements.

Ratings and Reviews

3.5 out of 5
44 Ratings

44 Ratings

CoffeePoweredTeacher ,

It works, but it doesn’t teach anything

I thought it might be a nice way for students to review simple machines, but I can’t ask them all to pay $2.99.

Developer Response ,

Hi! Thank you for your feedback. Our apps cost money because we’re a small company, don't have any third-party ads, or require in-app purchases to keep playing an app. If you have more feedback to help us improve, please reach out to

jamie3d ,

Doesn’t work

We bought this game a year or so ago. It was my son’s favorite app. But a couple months ago, it suddenly stopped working. You couldn’t load a profile or make a new one - the game would just crash. We’ve uninstalled and reinstalled it and that didn’t help. Reached out to the developers and they said to try an uninstall and reinstall and when I said that I’ve tried that, they offered a refund, which was kind of them. But since there doesn’t seem to be any recent reviews for this app, I thought I should let you know that if you buy it, there’s a good chance it just won’t work.

Developer Response ,

We’re so sorry to hear that you are having trouble opening our app. We would love to sort this out but need some more information. Could you please email us at so that we can better assist you? Thanks!

Soccer mom jeans ,


When you start thinking about it, simple machines are everywhere! Thanks for making learning fun


Tinybop Inc.
463.4 MB

Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Afrikaans, Albanian, Arabic, Basque, Bengali, Bulgarian, Cambodian, Catalan, Croatian, Czech, Danish, Dutch, Estonian, Filipino, Finnish, French, German, Greek, Haitian, Hebrew, Hindi, Hungarian, Icelandic, Indonesian, Irish, Italian, Japanese, Korean, Latin, Latvian, Malay, Norwegian Bokmål, Persian, Polish, Portuguese, Punjabi, Romanian, Russian, Serbian, Simplified Chinese, Slovak, Slovenian, Spanish, Swahili, Swedish, Tagalog, Tamil, Telugu, Thai, Tibetan, Traditional Chinese, Turkish, Uighur, Ukrainian, Urdu, Uzbek, Vietnamese, Welsh

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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