screen crazy gears

Kids are naturally curious and want to explore the things around them. If we can provide them with fun activities that build on their interest in their environment, we can nurture an early interest in science as a means to understanding how the world works. One major topic that kids learn in school is simple machines like gears, pulleys and levers. Once they understand how these work, they will begin to see that the same physics can be found everywhere – in our bodies, in everyday objects and not just in complex machines.

What we love…

The cool mechanism where a new puzzle slides out as you solve a puzzle.

What we’d love to see…

Brief learning points for kids at appropriate points in the game.


Crazy Gears is a great physics puzzle app for exploring about gears, chains, rods and pulleys, and investigating how they work together. Challenging for children and fun for adults.

Our Rating

Crazy Gears by Seven Academy is a great app to jumpstart your kids’ interest and future success in STEM (Science, Technology, Engineering and Mathematics). With 61 levels of physics puzzles, it provides kids (from kindergarten to lower elementary levels) with lots of opportunities to explore how gears, chains, rods and pulleys work, and how to use them together to solve new puzzles.


Each level of the game is a unique puzzle that challenges kids to manipulate the given mechanical parts to build a mechanism that will effectively pull the next level of puzzle out. The first level starts off very easily where you just need to secure the chain to the rotating wheel. This shows you the main objective of the whole game, that is to build a mechanism that will transfer the motion from the motorized wheel/gear to the hook that is attached to the next level of puzzle.


More and more mechanical parts are added in subsequent levels but each time a new part is added, the game takes players through a few puzzles so that they can get to know how to use this new item effectively. Kids will learn from observation the basic properties of these items and how they work together, e.g. how gears rotate in opposite directions of each other when they are used together and how different sizes of gears have different rates of rotation.



The puzzles get more interesting as they get more tricky. Some times, some of the mechanical parts are movable and you need to position them in order to get the best effect. At other times, you find that you have additional items that you don’t need at all, they are there only to confuse you.



As players advance through the levels, they learn to formulate their own strategies to solve the puzzles e.g. for me, I would connect the chain to the hook first, then find the driver gear to see how it can be connected to the hook. Next, I would observe which of the parts are movable and finally construct a mechanism that have the gears, chains, rods and pulleys working together to pull out the next level. But now and then, players will encounter a new challenge that requires them to think out of the box and come up with a new strategy. This game is great for encouraging systematic and creative problem solving skills as well.


Gears as a simple machine, play an important role in our daily lives but we often don’t realize their significance. This app has a wonderful reference section for parents and teachers on the different properties of the items featured in this app (gears, rods, chains, pulleys, hook and wheel) and where we can find them. I’m positive that kids will be fascinated by these information if presented to them in a kid-friendly way. Included in this reference section are some conversation starters about gravity, friction and tension, and how you can use the different components in Crazy Gears to explain these abstract science concepts. Signing up for a free acccount will also allow you to create up to 40 student profiles, each with real-time progress monitoring.

Overall, Crazy Gears is a refreshingly differrent app that gives younger children an early exposure to simple physics and with guidance from adults, I hope they will begin to enjoy science and continue to be curious about the world around them.

Crazy Gears Official Trailer from Seven Academy on Vimeo.

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Crazy Gears

Crazy Gears Crazy Gears by EDOKI ACADEMY
Category: Education, Games, Puzzle
Requirements: Compatible with iPad2Wifi-iPad2Wifi, iPad23G-iPad23G, iPhone4S-iPhone4S, iPadThirdGen-iPadThirdGen, iPadThirdGen4G-iPadThirdGen4G, iPhone5-iPhone5, iPodTouchFifthGen-iPodTouchFifthGen, iPadFourthGen-iPadFourthGen, iPadFourthGen4G-iPadFourthGen4G, iPadMini-iPadMini, iPadMini4G-iPadMini4G, iPhone5c-iPhone5c, iPhone5s-iPhone5s, iPadAir-iPadAir, iPadAirCellular-iPadAirCellular, iPadMiniRetina-iPadMiniRetina, iPadMiniRetinaCellular-iPadMiniRetinaCellular, iPhone6-iPhone6, iPhone6Plus-iPhone6Plus, iPadAir2-iPadAir2, iPadAir2Cellular-iPadAir2Cellular, iPadMini3-iPadMini3, iPadMini3Cellular-iPadMini3Cellular, iPodTouchSixthGen-iPodTouchSixthGen, iPhone6s-iPhone6s, iPhone6sPlus-iPhone6sPlus, iPadMini4-iPadMini4, iPadMini4Cellular-iPadMini4Cellular, iPadPro-iPadPro, iPadProCellular-iPadProCellular, iPadPro97-iPadPro97, iPadPro97Cellular-iPadPro97Cellular, iPhoneSE-iPhoneSE, iPhone7-iPhone7, iPhone7Plus-iPhone7Plus, iPad611-iPad611, iPad612-iPad612, iPad71-iPad71, iPad72-iPad72, iPad73-iPad73, iPad74-iPad74, iPhone8-iPhone8, iPhone8Plus-iPhone8Plus, iPhoneX-iPhoneX, iPad75-iPad75, iPad76-iPad76, iPhoneXS-iPhoneXS, iPhoneXSMax-iPhoneXSMax, iPhoneXR-iPhoneXR, iPad812-iPad812, iPad834-iPad834, iPad856-iPad856, iPad878-iPad878, iPadMini5-iPadMini5, iPadMini5Cellular-iPadMini5Cellular, iPadAir3-iPadAir3, iPadAir3Cellular-iPadAir3Cellular
Size: 103.56 MB




NOTE: A fee was received to expedite this review to the top of our waiting list but this payment has not influenced the objectivity of the review and all opinions have been offered honestly.