Euclidea vs Tangram King
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Euclidea
Engage in geometric construction puzzles based on Euclidean principles. Solve increasingly difficult challenges using innovative tools, with options to explore, get hints, and compete with friends. Unlock new levels by earning stars or purchase an in-app item to remove restrictions.
- 156 geometric puzzle levels
- 10 innovative construction tools
- Explore mode with hints
- Dynamic drag, zoom, and pan interface
- Game Center competition
- Unlockable tools and shortcuts
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Euclidea is geometrical puzzles based on classical Euclidian constructions. > 156 Levels: from very easy to really hard > 10 Innovative Tools > "Explore" Mode and Hints > Easily Drag, Zoom & Pan > Compete with Friends via the Game Center > No Advertising! New levels are unlocked as you solve the previous ones. You can complete the whole game only if you earn all the stars (L, E, and V). But you can buy an IAP that removes this restriction. Find more useful hints on Euclidea on our site: https://www.euclidea.xyz/faq. “Euclidea has been shown to help with imagination, intuition, and logic, all wonderful skills to develop.” – appPicker “Euclidea is an absolute joy to play…it’s a game that every math student should have and, in an ideal world, every adult should like.” – Non-Trivial Games ***About Euclidea*** Euclidea is a brilliantly original way to learn about, explore and have fun with Euclidian Constructions! Your task is to solve interesting challenges by building geometric constructions with a straightedge and compass. If you design the most elegantly simple solutions in the least number of moves, you’ll earn the highest scores. Solutions are scored in lines (L) and elementary Euclidean constructions (E). ***Start Simple and Get Smarter!*** Don’t worry if you aren’t a math wizard. Euclidea starts out with simple challenges that guide you through the basics. Once you master the fundamentals, you’ll move on to tougher, more mind-bending challenges such as inner/outer tangents, regular polygons, and more. There are 120 unique challenges in total, which are organized in packs for simpler navigation. ***Add Constructions to Your Interface*** When you learn certain significant constructions – such as angle bisectors, non-collapsing compass, and so on – they are automatically added to the Euclidea interface’s shortcut, which helps you save time and allows you to create clean, uncluttered drawings. ***Easily Drag, Pan & Zoom*** Euclidea-created constructions are completely dynamic. As such, you can drag to adjust angles, lines, radii and so on. You can also easily zoom and pan. This not only makes the experience more interactive, but it allows you to more deeply grasp the relationships between geometric elements, explore various possibilities, and analyze errors. ***Instant, Automatic Precision*** Don’t worry about spending time or effort trying to achieve perfect precision, because Euclidea automatically handles that task by pinning points, lines and circles to the app’s clean interface. ***Compete with Friends*** Who said that math isn’t a competitive sport? Challenge your friends to see who can come up with the most elegant solutions, and track your achievements and rankings via the Game Center. ***Additional Special Features*** > A helpful “Explore” mode that allows you to see the figure you need to construct > An inventory of tools that you create as you progress – you’ll need these to solve future challenges > Some challenges can be solved in more than one way, which means you can try a different approach and have even more fun ***Questions? Comments? Send in your inquiries and stay up-to-date on the latest Euclidea news at https://www.euclidea.xyz/
Tangram King
Engage your mind with a classic puzzle game where you arrange seven geometric shapes to complete intricate patterns. Explore multiple game modes and challenge yourself with countless stages, offering hours of engaging gameplay. Compete with friends or players worldwide through various online features.
- 7 geometric pieces for puzzles
- Multiple game modes (classic, double, flip, spinning, hard)
- Countless stages for extended play
- 1v1 versus multiplayer mode
- Leaderboard and achievement support
- Supports 16 languages
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Complete the puzzles by combining 7 different pieces. [game characteristics] - players can enjoy various game modes .(classic, double, flip, spinning, hard mode) - hours of playing time with countless stages . - easy control and user friendly interface. - multi-play : support versus mode (1vs1) - support 16 languages. - support leader board, achievement and Invite friends. Facebook: https://www.facebook.com/mobirixplayen YouTube: https://www.youtube.com/user/mobirix1
Screenshots
Verdict
The clearest difference is ads: Euclidea at none against Tangram King's shown. Euclidea also leads on rating (4.8 vs 4.6) and ratings volume (938 vs 154). On price, review sentiment, update cadence and in-app purchases 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. Euclidea sells 6 one-off in-app purchases and Tangram King sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Euclidea holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Euclidea has 938 ratings behind it against 154, so its average is the more settled of the two. Written reviews complicate that: 86% of Euclidea's written reviews are positive against 89% of Tangram King's, so the app with the better star average is not the one people write more warmly about.
Euclidea ships an update every 3 months, Tangram King every 4 months. Both last shipped on October 26, 2026.
| Parameter | Euclidea | Tangram King |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (938 ratings) — better | 4.6 (154 ratings) |
| Positive reviews | 86.1% of reviews | 88.9% of reviews — better |
| Number of ratings | 938 — better | 154 |
| Update frequency | Every 3 months — better | Every 4 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 223 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | HORIS INTERNATIONAL LIMITED | MOBIRIX |
Customer experience
Euclidea
Tangram King
User reviews
Euclidea
From 938 App Store ratingsWhat we love
- 🚀 Excellent interface
- 🚀 Smooth controls
- 👍 Challenging and engaging puzzles
- 👍 Helps learn and improve geometry skills
- 👍 No ads or in-app purchases
Room to improve
- 🐛 App crashes on launch for some users
- 🐛 Circle tool not snapping to points properly
- 🐛 Solutions not always accepted even when correct
- 🔒 Locked levels require in-app purchases to access
Tangram King
From 154 App Store ratingsWhat we love
- 👍 Fun and entertaining
- 🧠 Good for brain exercise
- 👨👩👧👦 Suitable for children
- 😌 Relaxing and calming
- 💡 Many puzzles/levels
Room to improve
- 😠 Too many ads
- 🐛 Pieces don't always fit perfectly
- 🐛 Game doesn't always recognize solved puzzles
- 🐛 Pieces are given in the correct direction (too easy)
- 🐛 Lack of rotation for pieces
Bugs and requests
Euclidea
Reported bugs
3 issues- App crashing on launch
- Circle tool not snapping to points
- Solutions not being accepted correctly
Requested features
5 requests- Offline mode support
- Ability to mark points on free draw
- Protractor feature
- More supplemental educational content
- Ability to see when multiple solutions exist
Tangram King
Reported bugs
6 issues- Pieces not perfectly aligned
- Game not recognizing solved puzzles
- Ads blocking gameplay
- Sensitivity issues with piece placement
- Game progress reset
Show 1 moreShow fewer
- Pieces not auto-fitting correctly
Requested features
9 requests- Paid version to remove ads
- Option to rotate pieces
- More challenging levels
- Improve piece fitting sensitivity
- Add more game modes
Show 4 moreShow fewer
- Improve graphics
- Option to play with all pieces of the same color
- Option to discover which pieces to use
- Save game progress
In-app purchases
Euclidea
- Unlock the Rest Levels$0.99
- Unlock the Rest Hints$0.99
- Thanks to developers$0.99
Show 3 moreShow fewer
- Night Mode$0.99
- Many thanks to developers$4.99
- Many, many thanks to developers$49.99
Tangram King
- Hint Item Purchase$2.99









