Euclidea

91.8K reviews
Content rating
PEGI 3
1M+
Downloads
Content rating
PEGI 3
Digital Purchases
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About this game

Euclidea is a FUN & CHALLENGING Way to Create Euclidian Constructions!

127 Levels: from very easy to really hard
10 Innovative Tools
"Explore" Mode and Hints
Easily Drag, Zoom & Pan


New levels are unlocked as you solve the previous ones. You can complete the whole game only if you earn all the stars. But you can buy an IAP that removes this restriction.

“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.

***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/
Euclidea: Geometric Construction Puzzles
Updated on
Aug 31, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info and App activity
  • Data is encrypted in transit
  • You can request that data be deleted

Ratings and reviews

85.2K reviews
A Google user
February 4, 2019
By far the best mathematics app I've ever found. Really easy and intuitive controls, no ads (!!!), and no pay to win. It seems harsh to need every star to unlock the next set of levels but the challenge is fun and 89p is a very fair price to pay to unlock them all. You can also very easily use this app to draw neat diagrams to all sorts of geometry problems. My only improvement would be to please add some background music.
27 people found this review helpful
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Nicholas Pretzel
February 15, 2023
I must apologize for not updating my review sooner. Challenging and interesting Euclidean geometry game that teaches as it entertains. With hints now included, I can't fault it. The hints don't give too much away, rather they help point you in the right direction when you get stuck. Absorbing & original, even my dad, a retired maths professor, found it quite challenging in places. Highly recommended for anyone who enjoys maths. If you do then check out their other games too.
7 people found this review helpful
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HORIS INTERNATIONAL LIMITED
August 23, 2017
Hints are available in the new version. Please update your app.
A Google user
November 3, 2019
A great geometry challenge, where almost all of the puzzles are easy to complete with very little thought involved, but the challenge is to complete it using the minimum number of elementary shapes, which makes it very challenging to get 3 stars on all of them... No purchases in the app either, except for one that can be avoided by solving more puzzles.
49 people found this review helpful
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What’s new

* Added Serbian and Turkish support.
* The Dark mode has completely black background now.
* Fixed bugs. Updated components.