GeoCon HD vs One By One
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
GeoCon HD
An interactive educational game that makes learning plane geometry engaging and tangible. Students and math enthusiasts can create and manipulate geometric constructions with their fingers, solving tasks and discovering new levels. It offers a fun way to enhance mathematical reasoning skills.
- Interactive geometric constructions
- 38 levels in 4 categories
- Multiple solution paths
- Hints and user-friendly guidance
- Practice Mode
- Game Center achievements
Read full descriptionHide full description
GeoCon HD is an educational game for the iPad. It is useful for students, teachers and math enthusiasts studying plane geometry since the geometric constructions of GeoCon HD are one of the most interesting and exciting areas of geometry. With GeoCon HD 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 HD. 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 HD is flexible! - hints, user-friendly solutions and guidance are available in the app – GeoCon HD 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 HD 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.
One By One
Practice arithmetic, algebra, trigonometry, and calculus with a retro-style math game. Level up by solving problems, unlock new challenges, and compete on leaderboards. Enhance your skills with artifacts and strategic upgrades.
- Randomly generated math problems
- Leveling system with unlockable content
- Practice arithmetic, algebra, trigonometry, and calculus
- Retro ASCII art and music style
- Leaderboards and achievements
- Math artifacts and upgrades
- AI battle mode for targeted practice
Read full descriptionHide full description
One By One is a retro math study game built for middle and high school students looking to level up their mental math skills. Featuring randomly generated problems, the app lets you switch from basic arithmetic to advanced calculus. You can also target specific practice areas using the One By One Battles mode or the premium Sandbox mode. Key Features Retro Calculator Aesthetic: Enjoy a nostalgic UI designed with classic Unicode and ASCII art, complete with satisfying mechanical key clicks and atmospheric background music. Four Math Disciplines: Practice everything from basic arithmetic and high school algebra to trigonometric functions (complete with a built-in unit circle) and calculus derivatives. Leveling System: Progress all the way from Level 1 to 99, unlocking brand-new question tiers every ten levels. AI Battles & Training: Test your speed in targeted training modes or race against AI opponents to earn in-game rewards. Artifacts & Upgrades: Solve rare "Golden Problems" to collect 25 unique math artifacts featuring 9 distinct upgrades to shape your strategy. Leaderboards & Achievements: Compete across 5 specialized leaderboards, including a balance-based leaderboard, and uncover hidden achievements. Download One By One and start solving math faster than your teacher! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: GeoCon HD at none against One By One's shown. GeoCon HD also leads on rating (5.0 vs 4.8) and iOS requirement (12.0 vs 15.0). One By One's advantage is update cadence (every 2 weeks vs every 5 months) and ratings volume (77 vs 1). On price, review sentiment, in-app purchases and monetization model 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. GeoCon HD sells 2 one-off in-app purchases and One By One sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
GeoCon HD holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: One By One has 77 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 84% of GeoCon HD's written reviews are positive against 91% of One By One's, so the app with the better star average is not the one people write more warmly about.
GeoCon HD ships an update every 5 months, One By One every 2 weeks. The most recent releases landed on October 17, 2026 and October 22, 2026 respectively.
| Parameter | GeoCon HD | One By One |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.8 (77 ratings) |
| Positive reviews | 84.2% of reviews | 90.9% of reviews — better |
| Number of ratings | 1 | 77 — better |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 49 MB | 64 MB |
| Age rating | 4+ | 4+ |
| Developer | Oleh Yudin | Brice Brown |
Customer experience
GeoCon HD
One By One
In-app purchases
GeoCon HD
- Three keys for levels unlock$0.99
- Unlock all game levels to play$0.99
One By One
- Monthly Support$1.991 Month
- Yearly Support$12.991 Year
- Lifetime Supporter pass$19.99
Questions
Is GeoCon HD free?
Is One By One free?
Which has better reviews, GeoCon HD or One By One?
Do GeoCon HD or One By One have ads?
Which is updated more often, GeoCon HD or One By One?
Other comparisons















