# GeoCon

> Interactive educational game for learning plane geometry through geometric constructions. (iPhone/iPad app by Oleh Yudin.)

- Source: https://appshunter.io/ios/app/geocon/id919438041 (this page in markdown: same URL + `.md`)
- Developer: [Oleh Yudin](https://appshunter.io/developer/381844540)
- Category: Games, Education, Puzzle
- Price: Free with in-app purchases
- Rating: 4.30/5 from 11 App Store ratings · 31 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 18 MB
- Languages: American English, Japanese, Russian
- Released: 2014-12-02
- Data updated: 2026-08-30
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/geocon/id919438041/reviews.md

## What is GeoCon?

GeoCon is an educational game for iPhone. It is useful for students, teachers and math enthusiasts studying plane geometry since the geometric constructions of GeoCon are one of the most interesting and exciting areas of geometry. With GeoCon you will literally create and touch various constructions with your finger. In this way, an important part of geometry is made both tangible and interactive. It can even be fun!

Resolve construction tasks, discover new levels, gather achievements, compete with your friends and increase your mathematical reasoning skills and understanding with GeoCon. Have fun and learn at the same time!

Features:
    - 38 levels in 4 categories provide something for everyone from a beginner to a skilled student
    - levels can be completed in a multiple different ways – GeoCon is flexible!
    - hints, user-friendly solutions and guidance are available in the app – GeoCon is a helpful and provides guidance.
    - move, scale and rotate the canvas, and also move points to get a different perspective on the level. Of course, you can undo and redo any of your construction steps, so that new approaches can be tried without any stress. 
    - a Practice Mode is also available, providing a learning environment without the pressure of Game Mode
    - achievements are available in the Game Center, providing a level of friendly competition.


Details:
Easy tutorial steps will teach you the basic geometric constructions: setting and moving points, constructing lines and circles, creating intersection points.
After the tutorials, there are 38 challenging levels with different complexity, which makes the game interesting for everyone no matter what their skills in geometry currently are. 
All game levels are divided into four categories: Basic constructions, Line segments, Triangles and Circles. Completing these first levels provide you with new construction tools. These new tools make the completion of more complex levels less tedious – the same way a professional mathematician works. 
As a reward for each level you will get a silver or golden medal. The golden medal is given for each level solved through a minimum possible number of moves. Stuck on some level or just want to find out how to solve it with the minimum number of moves? GeoCon provides hints for each level. If needed, in-app purchases can provide you with additional hints.
Game achievements are available for you in the Game Center. Compete with your friends in gathering these achievements. Some game levels have multiple solutions, and finding these additional solutions to a level will provide you with even more achievements 
A Practice mode is also available. In Practice Mode all construction tools are available. You can use Practice Mode for studying the construction tools and resolving your own ideas prior to entering Game Mode.

## Key features

- Interactive geometric constructions
- 38 levels in 4 categories
- Hints and user-friendly solutions
- Practice Mode for learning
- Achievements and friendly competition
- Undo/redo construction steps

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Three keys for levels unlock | $0.99 | one-time |
| Unlock all game levels to play | $0.99 | one-time |


## Recent user reviews (10 of 31)

All indexed reviews: https://appshunter.io/ios/app/geocon/id919438041/reviews.md

### 5/5 — 良い！！

*2024-11-28, version 1.8*

日本語導入されてます！
難易度は、簡単なものからめちゃくちゃ難しいものまで幅広いです。
面白いし、グラフィックがおしゃれで好きです。

### 5/5 — This app az amazing!!!

*2022-11-25*

I love this game and it’s not only a game , it’s educational !

### 5/5 — Спасибо разработчикам!

*2022-11-03*

Однозначно стоит поиграть! 
Сложно, надо реально помнить что преподавали в школе! Но освежает знания на 5+! Хочешь не хочешь пойдешь гуглить теоремы и правила, что-то и запомнится!

### 5/5 — Super

*2019-03-22*

Думал я умный , оказалось не очень! Сделал 3 покупки для решённых , чтобы посмотреть короткий  путь решения. все решил кроме двух  из 38  .. не могу хоть тресни .. уже месяц .... все пробовал .., из картонки вырезал ... крутил вертел ... никак !!! Амбиции и потраченное время не позволяют купить решение . Буду сидеть до посинения!!! Разработчику огромное уважение за классное преложение. Сделано с любовью.

### 5/5 — Спасибо

*2018-11-10*

Очень крутая игра, спасибо!

### 3/5 — Fun initially

*2018-07-14*

This app is great!
But it's the little things that repeat and make a big difference in anything in life. 

2 things make it unwieldy:  Few colors.  The apps insistence that every single line Not be a mere segment.  It's difficult to make sense of what's seen after Not a long time on a puzzle.

The fact that the user cannot use the angle bisector tool on a midpoint to make a right angle, is annoying. You must draw yet another line.  This adds to the unwieldiness mentioned earlier.

The app has Apples game center, but when getting onto new hardware, it didn't restore my progress or purchases.  Thankfully the purchases were cheap.  But this was rude. 

Besides these 4 minor but often annoyances, it's a great app!  And i _would_ be happy to award it 5 stars.
3 stars.

### 5/5 — Bus ride

*2017-08-02*

This is the best prayer beads I can find riding in the bus to work ...

### 5/5 — Превосходно!

*2017-05-23*

Высочайшее качество графики, приятный дизайн, оригинальная идея, блестящее исполнение! Прекрасная вещь для любителей математики. Уровень отличника нужен, а то и олимпиадника.
После решения задачи подумайте, как сделать это на золотую медаль (за минимальное число построений), чтобы потом не возвращаться и не решать заново. 
Не смог два уровня решить вообще, а три не смог решить на медаль.
Обратите внимание на доп. задания в GameCenter.

### 5/5 — Классная игра

*2016-10-26*

Разминает мозги

### 5/5 — Полезная игра

*2016-10-18*

Захотелось заново открыть учебник геометрии

## Frequently asked questions about GeoCon

### What is GeoCon?

GeoCon is an educational game designed for iPhone that makes learning plane geometry interactive and engaging. It allows users to create and manipulate geometric constructions with their fingers, making abstract concepts tangible.

### What are the key features of GeoCon?

Key features include 38 levels across 4 categories, flexible level completion with multiple solutions, available hints and guidance, canvas manipulation (move, scale, rotate), undo/redo functionality, a Practice Mode for unpressured learning, and Game Center achievements for friendly competition.

### How much does GeoCon cost?

The app is free to download and play. While the core game is free, in-app purchases are available for additional hints if you get stuck on a level.

### What kind of geometry does GeoCon cover?

GeoCon focuses on plane geometry, specifically teaching basic geometric constructions such as setting and moving points, constructing lines and circles, and creating intersection points. Levels are categorized into Basic constructions, Line segments, Triangles, and Circles.

### Who is GeoCon intended for?

This app is ideal for students learning geometry, teachers looking for interactive teaching tools, and math enthusiasts who enjoy exploring geometric concepts in an engaging and fun way.

## Version history (last 5 releases)

### 1.8 — 2022-07-29

minor updates and fixes

### 1.7 — 2017-12-18

This app has been updated by Apple to display the Apple Watch app icon.

-added Japanese translation
-level 4.9 improved minimum steps required
-minor fixes and improvements

### 1.6 — 2017-04-11

- free text hints are added to the levels

### 1.5 — 2015-11-30

-added ability to share the challenges via Facebook to ask for help, discuss or just tell your friends how smart you are
-GeoCon remembers levels unlocked with the key. No need to use another key to see the solution again
-updated optimal solution for level 3.4, 4.6, 4.12
-minor fixes and improvements

### 1.4 — 2015-03-04

-removed view actions (scale, translate, rotate) from undo/redo list
-minor improvements and fixes

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## More apps by Oleh Yudin

- [iCrosss](https://appshunter.io/ios/app/icrosss/id431653759)
- [iCrosss Lite](https://appshunter.io/ios/app/icrosss-lite/id509927782)
- [GeoCon HD](https://appshunter.io/ios/app/geocon-hd/id919438593)

All apps by Oleh Yudin: https://appshunter.io/developer/381844540

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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 2026-08-30.*