Comparison

RelationShapes vs Code Karts

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RelationShapes

This educational app helps young children develop visual-spatial reasoning and early math skills through open-ended play. It offers two modes: 'Match It' for shape exploration and 'Picture It' for creative expression with accessories and backgrounds. Designed for families and educators, it supports multiple user profiles and collaborative play.

Highlights
  • Visual-spatial reasoning development
  • Open-ended creative play
  • Shape matching and creation
  • Multiple user profiles
  • Collaborative split-screen play
  • Progress monitoring
  • Printable learning resources
Features
Read full description

Build a strong foundation of early math skills with our award-winning first app, RelationShapes®. Strengthen young children’s visual-spatial reasoning and creative expression through open-ended play! VizuVizu® apps are based on the UNESCO prize-winning visual education method created by Y. Agam, a world-renowned pioneer of kinetic art. To learn more, visit www.vizuvizu.com. Accolades for RelationShapes: • SIIA CODiE Awards Finalist, Best PreK / Early Childhood Learning Solution (2017) • Parents’ Choice Gold Award Winner & Parents’ Choice Awards® epic™ LIST (2017) • Common Sense Media “Best Of” Lists: Best Geometry Games, Apps, and Websites for Kids; Multiplayer Apps; Top Puzzle Apps & Must-Have Apps for Family Travel (2017) • Children's Technology Review Editor's Choice (2016) • Teachers with Apps Certified Digital Product, and Best Play & Learn Apps (2016) • App Store, New Apps We Love (RelationShapes for iPad, 2016) RelationShapes offers two interrelated areas that invite children to play and replay: Match It – Exploration and discovery have free reign as children manipulate abstract and figurative shape combinations to make a match – any way they choose! Picture It – Creativity and delight abound as children use their imagination to personalize their shape pictures with vivid accessories and backgrounds that add humor and context. RelationShapes is designed with young learners and their grown-ups in mind. Key Features for Families & Educators: • Share the experience: Four user profiles included with each app download • Level up: Eight levels of increasingly challenging activities promote flexible thinking and creativity • Play together: Collaborate and cooperate via the split-screen design and multi-touch capability • Play flexibly: Use at home or in the classroom for independent play, paired learning, center time, or small group instruction • Monitor progress: View the skills children learn and practice as they progress through each level • Collect creations: Save and review children’s pictures in the gallery • Extend beyond the screen: Connect digital and real world play and learning with six printable Extended Learning resources Children will practice and further develop their fine motor skills while playing RelationShapes. Devices with larger screens will offer the most optimal user experience. We take your privacy very seriously. The app does not include third party advertising, does not collect children’s personally identifying information, and all content created in the app stays on the device. Privacy Policy: https://vizuvizu.com/privacy-policy Terms of Use: https://vizuvizu.com/app-terms

About

Code Karts

This app introduces children aged 4 and up to pre-coding concepts through engaging logic puzzles presented as a raceway. It teaches fundamental coding principles and problem-solving skills through interactive gameplay, including counting in binary.

Highlights
  • Pre-coding logic puzzles
  • Learn to count in binary
  • Develop sequencing and problem-solving
  • Over 70 levels
  • Two game modes
  • Intuitive UI for young children
Features
Read full description

Ready, Set, Code! Code Karts introduces pre-coding to children from the age of 4 through a series of logical puzzles presented in the form of a raceway. What’s more, it teaches kids the fundamentals of code while they race! New in version 4.0: Learn to count in binary with 5 new games! Kids will learn to count like a computer using only 0 and 1 numerals. These activities will sharpen their problem-solving skills and develop their understanding of the decimal system. With over 70 levels, a variety of puzzling obstacles, and two different game modes, there’s no shortage of educational content for kids to enjoy. In Code Karts, the objective is to use direction bricks to get the race car to the finish line. Through careful observation of the track ahead and some logical thinking, kids will quickly pick up on solutions to more and more difficult puzzles and will begin to absorb key elements of code-based thinking. For example, one of the obstacles, the switch, represents “if-then” statements, one of the most common programming tools. While there are a number of games that aim to teach children the fundamentals of code, we’ve found that they are often too difficult to truly educate their intended audience. Code Karts aims to teach the youngest of children the fundamentals of code, allowing them a deeper and more immediate understanding once they become old enough to actually begin writing code themselves. FEATURES: - 2 modes: Classic or Competition (race against the device) - Very intuitive User Interface for children from age 4 - Develop sequencing, problem solving and logic - 70+ levels - 21 languages In our technology-driven world, programming is becoming more and more of a vital skill. It’s a proven fact that the earlier you are introduced to something, the more likely you are to be able to master it as you learn. The same applies to code! By introducing kids to code at a young age, you can ensure that they get a head start in the fascinating realm of computer technology. And what’s a better way to introduce them than through Code Karts, our fun and engaging educational game! About EDOKI ACADEMY We founded EDOKI ACADEMY to bring our classroom experience with hundreds of children to the Digital world of tablets. As certified teachers, our aim is to develop a range of truly educational as well as beautiful apps based on the Montessori Method. All our apps can be used at home or in class. They can also be used by speech therapists. We are proud winners of several Awards from the Parent's Choice Foundation and Common Sense Media. For any support, please contact us on support@edokiacademy.com. PRIVACY POLICY We take personal data protection very seriously. We do not collect or share personal information about your child. You can read our privacy policy here: https://www.edokiacademy.com/en/privacy-policy/ CONNECT WITH US! If you have any support requests, comments, or questions do not hesitate to contact us at support@edokiacademy.com or visit the Edoki Academy Online Community at edokiacademy.com. We’d love to hear from you!

Screenshots

RelationShapes4 screens
Code Karts4 screens

Verdict

The call

The clearest difference is rating: RelationShapes at 4.8 against Code Karts's 3.8. RelationShapes also leads on review sentiment (100% vs 61%) and in-app purchases (none vs 1). Code Karts's advantage is ratings volume (147 vs 8). On price, update cadence and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Code Karts sells 1 one-off in-app purchase. RelationShapes asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

RelationShapes holds the better App Store score, 4.8 against 3.8. That said, the two scores are not equally well evidenced: Code Karts has 147 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 100% of RelationShapes's written reviews are positive against 61% of Code Karts's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 3, 2026 and October 12, 2026 respectively.

Scorecard6 real differences · 4 level
RelationShapes versus Code Karts: the parameters behind the verdict, then further details
ParameterRelationShapesCode Karts
PriceFreeFree
Rating4.8 (8 ratings) — better3.8 (147 ratings)
Positive reviews100.0% of reviews — better61.2% of reviews
Number of ratings8147 — better
Update frequencyEvery 4 monthsEvery 4 months
Ads—No
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better12.0
Further details — not scored
Size133 MB260 MB
Age rating4+4+
DeveloperVizuvizu LLCEDOKI ACADEMY

Customer experience

RelationShapes

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Code Karts

All ratings147 ratings
Positive68.0%
Neutral4.8%
Negative27.2%
Written reviews121 reviews
Positive61.2%
Neutral13.2%
Negative25.6%

Bugs and requests

RelationShapes

Not enough reviews yet to summarise bugs or requests.

Code Karts

Reported bugs

26 issues
  • Cannot restore purchases
  • Purchased content not unlocking on new devices
  • Family sharing not working for purchases
  • Bonus level is unplayable/unexitable
  • Back button not working in bonus level
Show 21 more
  • App stuck on 'please wait' screen
  • Errors when family member tries to access paid features
  • Purchase not applying across devices
  • Game won't open after purchase attempt
  • Levels not unlocking after purchase
  • Inconsistent silent mode
  • Binary counting errors
  • Frustrating race crashes
  • Car crashes on corners in races
  • Game freezes or pauses on first screen
  • Purchased features not unlocking on other devices
  • Trophy points not accumulating
  • Coins disappearing after iPad update
  • Coins not collecting
  • Error when trying to buy full version (no internet connection)
  • Black screen after completing level 20 on iPad 2
  • Buggy purchase process
  • App asks to buy again after previous purchase
  • Binary game has errors in Turkish dubbing
  • App doesn't work on iPad 3 (popup connection required)
  • Silent mode is inconsistent

Requested features

12 requests
  • Extend free trial
  • Improve arrow interaction
  • Add more levels
  • Add option to reset progress
  • Improve Turkish dubbing accuracy
Show 7 more
  • Fix binary counting errors
  • Add more complex challenges
  • Allow changing car speed
  • Fix car not cleaning issue
  • Provide clues for race crashes
  • Add dark mode option
  • Improve sound options

In-app purchases

None

RelationShapes

No in-app purchases

1 purchases

Code Karts

One-time1
  • Full Game Unlock$2.99

Questions

Is RelationShapes free?
RelationShapes is free to download, with no in-app purchases.
Is Code Karts free?
Code Karts is free to download, with in-app purchases available.
Which has better reviews, RelationShapes or Code Karts?
RelationShapes is rated higher. RelationShapes averages 4.8 out of 5 from 8 ratings, while Code Karts averages 3.8 from 147 ratings.
Which is updated more often, RelationShapes or Code Karts?
RelationShapes ships an update every 4 months, and Code Karts every 4 months. Most recently, RelationShapes was updated on October 3, 2026 and Code Karts on October 12, 2026.

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