3Doku vs Puzzle IO
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
3Doku
Experience Sudoku in a new dimension with this challenging puzzle game. Solve complex 9x9x9 cube puzzles where 27 Sudoku schemas intersect. Customize your gameplay with multiple difficulty levels and initial value distributions for endless fun.
- 3-dimensional Sudoku puzzles
- 9x9x9 cube gameplay
- 27 intersecting Sudoku schemas
- 4 difficulty levels
- Customizable initial value distributions
- Endless challenging gameplay
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Are you addicted to Sudoku? Can you solve a Sudoku schema blindfolded with your hands tied behind your back? Do you need more complexity? ...more challenge? ...more headache? ...more dimensions? Try 3Doku! 3Doku brings the traditional Sudoku game to the third dimension, providing endless fun for the _serious_ Sudoku player. In a 9x9x9 cube, 27 Sudoku schemas intersect one another along the three axis. Every 9x9 bi-dimensional schema must be solved keeping in mind that every single cell belongs to the selected schema and also to the other two placed on the orthogonal planes. With 4 difficulty levels and 4 initial values distributions you can customize your game and have every time a new exciting challenge to solve.
Puzzle IO
Experience a modern, fast-paced logic puzzle game based on binary Sudoku. Fill grids with 0s and 1s following specific rules, earn bonuses with a smart point system, and compete globally. Offers endless challenges across six difficulty levels.
- Fill 10x10 grids with 0s and 1s
- Equal 0s and 1s per row/column
- No three identical numbers in a row
- Smart point system with bonuses
- Time-based multipliers for higher scores
- Game Center support and global leaderboards
- Six difficulty levels
- Unlimited unique puzzles
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Addictive Logic Fun! Looking for a fresh take on Sudoku? Puzzle IO brings you a modern, fast-paced, and highly addictive logic puzzle experience! Easy to learn, hard to master! * Fill each 10x10 grid with 0s and 1s * Each row and column must have an equal number of 0s and 1s * No three identical numbers in a row! Think fast, score big! * Smart point system: Earn bonuses by solving grids efficiently! * Time-based multipliers: Solve puzzles quickly for higher scores! * Game Center support: Compete with friends and climb the global leaderboards! Endless Challenges! * Six difficulty levels: Unlock harder modes as you improve! * Unlimited unique puzzles: No two grids are the same! * Clean, modern design: Smooth animations & intuitive controls! Ready to train your brain? Download Puzzle IO - Binary Sudoku now and start playing!
Screenshots
Verdict
The clearest difference is price: Puzzle IO at Free against 3Doku's $2.99. Puzzle IO also leads on update cadence (every 3 weeks vs every 10 months) and ratings volume (348 vs 1). 3Doku's advantage is in-app purchases (none vs 1) and ads (none vs shown). On review sentiment and iOS requirement 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
Puzzle IO is free to download; 3Doku costs $2.99 up front. Puzzle IO sells 1 one-off in-app purchase. 3Doku asks for nothing beyond the download.
3Doku holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Puzzle IO has 348 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 67% of 3Doku's written reviews are positive against 74% of Puzzle IO's, so the app with the better star average is not the one people write more warmly about.
3Doku ships an update every 10 months, Puzzle IO every 3 weeks. The most recent releases landed on September 20, 2026 and October 9, 2026 respectively.
| Parameter | 3Doku | Puzzle IO |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 4.6 (348 ratings) |
| Positive reviews | 66.7% of reviews | 74.3% of reviews — better |
| Number of ratings | 1 | 348 — better |
| Update frequency | Every 10 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 1 MB | 107 MB |
| Age rating | 4+ | 4+ |
| Developer | Simone Tellini | 99 Up Games |
Customer experience
3Doku
Puzzle IO
Bugs and requests
3Doku
Not enough reviews yet to summarise bugs or requests.
Puzzle IO
Reported bugs
4 issues- Incorrect error detection on completed rows/columns
- Frequent crashes and bugs
- Game sometimes freezes or becomes unresponsive
- Ads not loading properly, preventing gameplay
Requested features
5 requests- Dark mode option
- Better hint system that explains the logic
- Option to turn off row/column completion notifications
- More challenging puzzle levels
- Ability to create and save custom puzzles
In-app purchases
3Doku
No in-app purchases
Puzzle IO
- Remove Ads$2.99
