Comparison

Blue 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

Blue

This app allows children to create and execute algorithms for a robot. It offers step-by-step and drag-and-drop programming, with features like repeats and 45-degree turns. Challenge modes introduce obstacles and limited controls for added difficulty.

Highlights
  • Step-by-step programming
  • Drag and drop interface
  • Repeat commands
  • 45-degree turns
  • Obstacle challenges
  • Customizable voice commands
Features
Read full description

Blue-Bot is one of the many loved members of the TTS Floor Robot family. The Blue-Bot app enables you to write an algorithm, send it and then Blue-Bot will follow your instructions. There are numerous features, which make writing algorithms both fun and educational. Use explore mode to develop algorithms: Step by step programming. Drag and drop programming. Include repeats to add efficiency. Program 45 degree turns. Challenge mode will add complexity into the algorithm: Blue-Bot will add random obstacles, adding complexity to the algorithm needed One or even two directional buttons can be removed Children can also record themselves saying a command and can assign it to a button on Blue-Bot. As the algorithm progresses, they will hear themselves giving the instructions. Please note to control a Blue-Bot floor robot your device must have Bluetooth.

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

Blue4 screens
Code Karts4 screens

Verdict

The call

The clearest difference is in-app purchases: Blue at none against Code Karts's 1. Code Karts's advantage is review sentiment (61% vs 43%) and ratings volume (147 vs 7). On price, rating, update cadence and ads 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. Blue asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 3.7 for Blue against 3.8 for Code Karts. That said, the two scores are not equally well evidenced: Code Karts has 147 ratings behind it against 7, so its average is the more settled of the two. Written reviews are what separate them: 43% of Blue's written reviews are positive against 61% of Code Karts's.

UpkeepUpdate frequency

Blue ships an update every 3 months, Code Karts every 4 months. The most recent releases landed on September 24, 2026 and October 12, 2026 respectively.

Scorecard4 real differences · 6 level
Blue versus Code Karts: the parameters behind the verdict, then further details
ParameterBlueCode Karts
PriceFreeFree
Rating3.7 (7 ratings)3.8 (147 ratings) — better
Positive reviews42.9% of reviews61.2% of reviews — better
Number of ratings7147 — better
Update frequencyEvery 3 months — betterEvery 4 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.412.0 — better
Further details — not scored
Size130 MB260 MB
Age rating4+4+
DeveloperTTS Group LimitedEDOKI ACADEMY

Customer experience

Blue

All ratings7 ratings
Positive71.4%
Neutral0.0%
Negative28.6%
Written reviews7 reviews
Positive42.9%
Neutral14.3%
Negative42.9%

Code Karts

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

Bugs and requests

Blue

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

Blue

No in-app purchases

1 purchases

Code Karts

One-time1
  • Full Game Unlock$2.99

Questions

Is Blue free?
Blue 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, Blue or Code Karts?
Code Karts is rated higher. Blue averages 3.7 out of 5 from 7 ratings, while Code Karts averages 3.8 from 147 ratings.
Do Blue or Code Karts have ads?
Neither Blue nor Code Karts shows ads.
Which is updated more often, Blue or Code Karts?
Blue ships an update every 3 months, and Code Karts every 4 months. Most recently, Blue was updated on September 24, 2026 and Code Karts on October 12, 2026.

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