MarcoPolo Ocean vs Code Karts
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MarcoPolo Ocean
Explore and build underwater worlds with this "digital sandbox" for kids. Discover marine life, construct submarines, and learn about ocean ecosystems through interactive play. Encourages self-directed learning in science and technology.
- Build coral reefs and aquariums
- Explore the deep sea
- Steer submarines and boats
- Interact with 32+ marine species
- Learn ocean vocabulary and concepts
- Self-directed STEM learning
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Parents' Choice Gold Award! App Store Best of 2014 and Editors' Choice in 16 Countries! Make dolphins jump. Build a coral reef. Explore the deep sea. Create your own aquarium. These are just some of the fun things you can do with MarcoPolo Ocean, a “digital sandbox” for kids to play in that sparks their interest in the most unexplored part of our planet – the ocean. Build and Explore Six build-and-play activities bring the language and the images of the ocean to life. Ocean is playfully narrated and animated to reinforce vocabulary, physical attributes and ocean concepts. *Coral Reef *Octopuses *Marine Mammals *Fish *Boat *Submersible Free Play Exploration The open ocean is a personal aquarium your child can explore however he or she chooses! *Explore from the shoreline all the way down to the sea floor *Steer your submersible and boat through ocean waters *Add marine animals and fish to the ocean and interact with more than 32 different species *Investigate by tapping, dragging and swiping where the animals live in the ocean to see their natural behaviors and how they interact with other animals Through self-directed discovery, we expose kids to early skills in science, technology, engineering and math (STEM), focusing on the following concepts: *The wide variety of animal species that live in the shallow and deep parts of the ocean *Ocean landscape *Construction and characteristics of a boat (shipping vessel) and submersible *Characteristics of fish and marine mammals *Topic-specific vocabulary exposure and acquisition Privacy Policy We take privacy very seriously. We do not collect or share personal information about you or your child, nor do we allow any third-party advertising. You can see our full policy at http://www.marcopololearning.com/privacy.html About Us: http://www.marcopololearning.com/
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.
- 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
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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
Verdict
The clearest difference is rating: MarcoPolo Ocean at 4.5 against Code Karts's 3.8. MarcoPolo Ocean also leads on in-app purchases (none vs 1) and review sentiment (74% vs 61%). On price, ratings volume, 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
Both are free to download. Code Karts sells 1 one-off in-app purchase. MarcoPolo Ocean asks for nothing beyond the download.
MarcoPolo Ocean holds the better App Store score, 4.5 against 3.8. Both are backed by a comparable volume of ratings — 254 and 147 respectively. Written reviews point the same way: 74% of MarcoPolo Ocean's written reviews are positive against 61% of Code Karts's.
MarcoPolo Ocean ships an update every 2 months, Code Karts every 4 months. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.
| Parameter | MarcoPolo Ocean | Code Karts |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (254 ratings) — better | 3.8 (147 ratings) |
| Positive reviews | 74.3% of reviews — better | 61.2% of reviews |
| Number of ratings | 254 — better | 147 |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 407 MB | 260 MB |
| Age rating | 4+ | 4+ |
| Developer | MarcoPolo Learning, Inc. | EDOKI ACADEMY |
Customer experience
MarcoPolo Ocean
Code Karts
User reviews
MarcoPolo Ocean
From 254 App Store ratingsWhat we love
- 👍 Fun and educational
- 🌟 Beautiful graphics and animations
- 🧠 Teaches kids about ocean life
- 🕹️ Engaging interactive features
- 🤗 Great for toddlers and young kids
Room to improve
- 🐛 Crashes and stability issues
- 💾 Large file size
- 🔇 Sound problems
- 🤖 Lack of advanced features
Code Karts
From 147 App Store ratingsWhat we love
- 👍 Great introduction to coding
- 👍 Fun and engaging for kids
- 👍 Good for logic and sequencing
- 👍 Quick customer support
- 👍 No ads
Room to improve
- 👎 Requires purchase to continue
- 👎 Purchase not restoring
- 👎 Issues with family sharing
- 👎 Tedious arrow interaction
- 👎 Broken bonus level
Bugs and requests
MarcoPolo Ocean
Reported bugs
3 issues- Crashes on launch or during gameplay
- Freezing and unresponsive issues
- Compatibility problems on older devices
Requested features
4 requests- Add more sea creatures and ocean environments
- Introduce more puzzles and activities
- Allow customization of the ocean scene
- Expand to include conservation and environmental themes
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
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- 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 moreShow fewer
- 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
MarcoPolo Ocean
No in-app purchases
Code Karts
- Full Game Unlock$2.99
Questions
Is MarcoPolo Ocean free?
Is Code Karts free?
Which has better reviews, MarcoPolo Ocean or Code Karts?
Do MarcoPolo Ocean or Code Karts have ads?
Which is updated more often, MarcoPolo Ocean or Code Karts?
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