SmartGo One vs 13 Orphans Mahjong
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
SmartGo One
Learn, play, and study the ancient game of Go with this comprehensive app. It offers adjustable board sizes, a powerful AI engine, interactive books, and a vast database of professional games to help you improve your skills.
- Multiple board sizes (9x9 to 19x19)
- Powerful KataGo AI engine
- Interactive Go books
- 138,000+ professional game records
- Go problems and tutorials
- Pattern matching for game analysis
- Record, annotate, and edit games
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SmartGo One is the only Go app you’ll need, whether you’re just getting started or already a seasoned player. Learn, play, study, and improve with SmartGo One. Experience the ancient game of Go on your iPhone, iPad, or Mac in a whole new way. Also known as igo (囲碁), wéiqí (围棋), or baduk (바둑), Go begins with an empty board that gradually fills as players surround territory and capture stones. Start with a 9x9 board and move up to 13x13 and 19x19 as your skills grow. SmartGo One adapts to your strength, automatically adjusting handicaps so games remain competitive and enjoyable. And when you’re ready for a serious challenge, the powerful KataGo-based engine delivers strong, rewarding play. But SmartGo One is far more than a way to play Go. Read interactive Go books while replaying the moves they describe to deepen your understanding. Explore a collection of more than 138,000 professional game records spanning both modern and historical masters. Improve your reading and decision-making skills with a growing library of Go problems and tutorials. Want to know how a master would handle a position on your board? SmartGo’s pattern matching technology compares your game with historical pro games and shows how strong players approached similar situations. No matter your level, SmartGo One helps you continue improving. Features include: • 9x9, 11x11, 13x13, and 19x19 board sizes • Powerful KataGo-based engine • Fast and responsive gameplay • Manual or automatic handicap adjustment • Record, annotate, and edit your games • Territory estimator • Hints and move analysis • Undo and replay controls • Tutorial with over 100 problems • Extensive user manual We value your privacy and only collect the minimum information necessary to make our apps work well for you. Learn more at https://smartgo.com/privacy.html. This app is licensed under Apple’s standard Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
13 Orphans Mahjong
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13 Orphans Mahjong brings Riichi Mahjong to your iPhone with a clean, focused experience designed for both learning and play. Play complete Riichi Mahjong matches against computer-controlled opponents, with scoring, calls, Riichi, Dora, Furiten, draws, wins, and round progression handled automatically. PLAY RIICHI MAHJONG • Play full matches against three computer opponents • Choose between East-only and full Hanchan games • Authentic Riichi rules and scoring • Call Chi, Pon, Kan, Riichi, Ron, and Tsumo • Track points, Honba, Riichi sticks, Dora, and round progression LEARN AS YOU PLAY • Built-in Riichi Guide • Review tiles, basic terminology, calls, and scoring concepts • Suitable for players learning Riichi as well as experienced players looking for offline practice PLAY OFFLINE • No account required • Play anywhere without needing an internet connection • Resume an unfinished game later A SIMPLE, FOCUSED MAHJONG EXPERIENCE 13 Orphans Mahjong is built around the game itself giving you a straightforward way to learn, practice, and enjoy Japanese Riichi Mahjong on your iPhone. More features and Mahjong experiences are planned for future updates.
Screenshots
Verdict
The clearest difference is in-app purchases: 13 Orphans Mahjong at none against SmartGo One's 10. 13 Orphans Mahjong also leads on update cadence (daily vs every 8 days) and iOS requirement (15.0 vs 26.0). On price, ads and device support 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. SmartGo One sells 10 in-app purchases, starting at $4.99 per month. 13 Orphans Mahjong asks for nothing beyond the download.
SmartGo One ships an update every 8 days, 13 Orphans Mahjong daily. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | SmartGo One | 13 Orphans Mahjong |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (2K ratings) — better | — |
| Positive reviews | 76.9% of reviews | — |
| Number of ratings | 2K — better | — |
| Update frequency | Every 8 days | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPod |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 157 MB | 212 MB |
| Age rating | 4+ | 4+ |
| Developer | Smart Go, Inc. | KEVIN ALLEN GONZALES ONG |
Bugs and requests
SmartGo One
Reported bugs
3 issues- Illegal move detection issues on certain board positions
- Problems with missing variations or incorrect answers
- Inconsistent behavior when passing moves
Requested features
5 requests- Add read-only mode
- Improve move suggestion explanations
- Introduce difficulty settings for AI
- Integrate online play functionality
- Provide more randomness in AI moves
13 Orphans Mahjong
Not enough reviews yet to summarise bugs or requests.
In-app purchases
SmartGo One
- SmartGo One Pro – Monthly$4.991 Month
- Pro Games and Features14 Days trial$29.991 Year
- Go Problems Master Collection$3.99
- Go Problems Add-on 1: Easy$3.99
- Go: A Complete Introduction$5.99
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- How Not to Play Go$5.99
- Learn to Play Go 1$7.99
- Graded Go Problems 1$9.99
- Fundamental Principles of Go$11.99
- Pro – Lifetime Unlock$99.00
13 Orphans Mahjong
No in-app purchases
Questions
Is SmartGo One free?
Is 13 Orphans Mahjong free?
Do SmartGo One or 13 Orphans Mahjong have ads?
Which is updated more often, SmartGo One or 13 Orphans Mahjong?
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