# Euclidea — Geometric Construction Puzzle

> Geometric construction puzzle game based on Euclidean geometry. (iPhone/iPad app by HORIS INTERNATIONAL LIMITED.)

- Source: https://appshunter.io/ios/app/euclidea/id927914361 (this page in markdown: same URL + `.md`)
- Developer: [HORIS INTERNATIONAL LIMITED](https://appshunter.io/developer/646324304)
- Category: Games, Education, Puzzle
- Price: Free with in-app purchases
- Rating: 4.80/5 from 930 App Store ratings · 395 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 223 MB
- Languages: American English, Czech, Dutch, French (France), German (Germany), Greek, Italian, Japanese, Korean, Polish and 7 more
- Released: 2015-06-01
- Data updated: 2026-08-29
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/euclidea/id927914361/reviews.md

## What is Euclidea?

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/

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock the Rest Levels | $0.99 | one-time |
| Unlock the Rest Hints | $0.99 | one-time |
| Thanks to developers | $0.99 | one-time |
| Many thanks to developers | $4.99 | one-time |
| Many, many thanks to developers | $49.99 | one-time |
| Night Mode | $0.99 | one-time |


## What do users think of Euclidea?

Overall sentiment: positive

**Pros**

- 🚀 Excellent interface
- 🚀 Smooth controls
- 👍 Challenging and engaging puzzles
- 👍 Helps learn and improve geometry skills
- 👍 No ads or in-app purchases
- 👍 Progression from basic to advanced concepts

**Cons**

- 🐛 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

**Commonly reported bugs**

- App crashing on launch
- Circle tool not snapping to points
- Solutions not being accepted correctly

**Most requested features**

- Offline mode support
- Ability to mark points on free draw
- Protractor feature
- More supplemental educational content
- Ability to see when multiple solutions exist

## Recent user reviews (10 of 395)

All indexed reviews: https://appshunter.io/ios/app/euclidea/id927914361/reviews.md

### 5/5 — Отличная головоломка

*2026-06-05*

Здорово, что есть такие задачи. Можно хорошо увлечься и перезагрузиться.

### 3/5 — Challenging, almost to a point where it becomes annoying

*2026-06-04, version 4.22*

The puzzles themselves are great, it’s always nice to be able to figure out a valid solution on your own. The problem is the stars. You are forced to find a niche, hyper optimal solution in order to progress to the next pack. The hints are also very inconsistent, with some being that perfect nudge you needed to solve a star, but others are just useless. Last thing is that the screen tends to get way too cluttered, especially while looking for some V-stars. It would be nice to label points or have different colors for each line/circle. Overall a fun game, just needs a few tweaks to fix the annoying aspects.

### 5/5 — Epic

*2026-04-27, version 4.22*

Yea about as good as a game can reasonably get

### 5/5 — Шикарно!

*2026-03-10*

Это то что реально учит, наглядно показывает красоту геометрии! Вот если бы у меня такое было в школе!

### 1/5 — Not enough hints

*2026-02-25, version 4.22*

The hints are not clear enough

### 5/5 — Fun way to learn geometry!

*2025-11-28, version 4.22*

This is the best way to build geometric intuition I’ve ever seen in my life! Amazing work with this app!

### 5/5 — Phenomenal

*2025-11-18, version 4.22*

I'm really grateful to finally be able to play with compass and straightedge construction. This app makes it accessible and practical for anyone who wants to play and learn casually. It is excellently made.

### 4/5 — This but for kids?

*2025-11-05, version 4.22*

Do yall mind making apps like these for kids too or having a toddler level section? It would be great for little learners!!

### 4/5 — Great game

*2025-10-24, version 4.22*

Two issues:

- the game does not open when offline (did work a while ago)
- I have purchased access to all levels, but this purchase does not sync between my devices.


But still one of the best games, though. Thumbs up.

### 5/5 — ❤️

*2025-10-10, version 4.22*

Games like these are the reason to keep using phones. My favourite parts of this game are 1) the progression from basics to advanced methods 2) the encouragement to try finding the optimal solution. 
Obviously the controls are made really well too.

## Frequently asked questions about Euclidea

### What is Euclidea?

Euclidea is a game that challenges players to solve geometric construction puzzles using classical Euclidean methods. It features 156 levels of increasing difficulty and 10 innovative tools to help you create elegant solutions.

### How does progression work in Euclidea?

New levels in Euclidea are unlocked as you solve previous ones. To complete the entire game, you must earn all the stars (L, E, and V) from each level. An in-app purchase is available to remove this restriction.

### Does Euclidea have ads?

No, Euclidea does not contain any advertisements. The app is ad-free, allowing for an uninterrupted puzzle-solving experience.

### Can I compete with friends in Euclidea?

Yes, Euclidea allows you to compete with friends through the Game Center. You can challenge them to see who can create the most elegant solutions and track your rankings.

### What devices is Euclidea available on?

Euclidea is available on iPhone, iPad, and iPod devices. It is designed to offer a smooth experience across Apple's mobile platforms.

### How often is Euclidea updated?

Euclidea was last updated on June 29, 2020, with version 4.22. While the last update was some time ago, the existing content offers a substantial and engaging puzzle experience.

### What is the age rating for Euclidea?

Euclidea has an age rating of 4+. This indicates that the game is suitable for young children and offers content that is generally appropriate for all ages.

### What makes Euclidea's interface useful?

As you learn significant constructions like angle bisectors, they are automatically added to Euclidea's interface as shortcuts. This saves time and helps maintain clean, uncluttered drawings during puzzle solving.

## Version history (last 5 releases)

### 4.22 — 2020-06-29

• Fixed bugs

If you enjoy Euclidea, please leave a nice review in App Store. Happy solving!

### 4.20 — 2020-05-17

• Added 5 new challenges:
   4.11 "Square by Two Vertices"
   8.8 "Octagon from Square"
   8.9 "Egyptian Triangle by Side of Length 4"
   8.10 "Chord Parallel to Segment"
   13.10 "Billiards on Round Table"
• Updated the number of moves for minimum solutions: 10.4 "Rotation 90°"
• Supported Czech language. Thanks to Přemysl Pleva! 
• Fixed bugs

If you enjoy Euclidea, please leave a nice review in App Store. Happy solving!

### 4.16 — 2019-09-26

• Updated the minimum number of moves for:
10.11 "Three Circles - 2"
12.4  "Triangle by Tangent Points"

• Supported Vietnamese language. Thanks to Đào Duy Thức!

• Removed the first tutorial levels: Line Tool, Circle Tool, Point Tool.

• Fixed bugs.

If you enjoy Euclidea, please leave a nice review in App Store. Happy solving!

### 4.14 — 2019-04-29

• Updated the number of moves for minimum solutions: 

6.11 "Parallelogram by Three Midpoints"
12.8 "Hypotenuse and Altitude"

•  Supported Slovak language. Thanks to Peter Klein!

• Fixed bugs.

If you enjoy Euclidea, please leave a nice review in App Store. Happy solving!

### 4.12 — 2018-12-06

• Added 8 new challenges:
6.11 "Parallelogram by Three Midpoints"
7.8 "Circle Tangent to Three Lines "
10.12 "Center of Rotation "
12.8 "Hypotenuse and Altitude"
13.3 "Equilateral Triangle On Concentric Circles"
13.9 "Square by Four Points"
14.5 "Arbelos"
15.11 "Mickey Mouse"

• Level "Ratio 1 to 5" (10.9) moved from Kappa to Lambda (11.10).

• Fixed bugs.

If you enjoy Euclidea, please leave a nice review in App Store. Happy solving!

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## More apps by HORIS INTERNATIONAL LIMITED

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All apps by HORIS INTERNATIONAL LIMITED: https://appshunter.io/developer/646324304

## Related topics

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*