SaioApp vs Othello Sensei
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
SaioApp
Master the game of Othello with the world's strongest engine. Analyze moves, study player strategies, and access a vast library of game data. Designed for professionals seeking the ultimate competitive edge.
- Play against the strongest Othello engine
- Analyze best and all moves
- Access WThor games archive
- Study specific players
- Endgame Tutor mode
- In-app purchase for large move library
- Study mode for openings
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Saio (System Artificial Intelligence Othello) The strongest Othello engine in the world developed in about 15 years by the 3 times Italian Othello Champion Romano Benedetto. Now available on your iOS Device with all his features: - Play vs the engine at specific time limit or fixed depth of search - Eval bests moves - Eval all moves - Show detailed Library values - WThor games archive with all games of official tournaments from 1977 - Show statistics from games archive - You can study a specific player directly on the board - Regressive Analysis of all the games - Endgame Tutor mode, Single good move and single line to avoid lose the game - InApp buy of the INCREDIBLE BIG Library 8GB with 180M moves, 240.443 draw lines - Rotate board - Load games from list of moves in the clipboard - Export list of moves to the clipboard to easy share in chats - Show transcript of the game - Edit board - Fix the line that Saio play - Select of random XOT opening - Study mode to help to memorize openings - Gameplay mode with rank level of difficult - Middlegames play mode with rank points and level of difficulty - Endgames play mode with rank points and level of difficulty - Online classify for ranked games play mode Who buyed the FULL Library now can: - Expand the Library, manually or automatically (press for 3 seconds on Library) - Expand fixed lines - Automatically fill nodes not yet present on the line - Can start from the standard library too - Merge the incremental library to the main library - Download WThor DB Update automatically The engine of Saio is actually the STATE OF THE ART of the informatic knowledge about search in game trees, and is REALLY accurate to eval moves. SaioApp contain all the firsts 12 moves of his INCREDIBLE BIG Library of moves. After you can buy the FULL 8GB Library developed in about 10 years and continue to be expanded. The FULL library actually permit to Saio to NEVER LOSE A GAME, using the datagram algorithm build during Ph.D Thesis "How to build a library to never lose a game". You can explore all the library values and know what sequences are really draw, lose or win. You will have the definitive knowledge of the Othello moves with they real values. Designed for Professional Players that need the best engine ever, created to beat all others engines. Thanks to Alessandro Di Mattei and Paolo Scognamiglio for they support to be first in the world to buy SaioApp and to contribute to Test and add features. http://www.romanobenedetto.it/tesi.pdf
Othello Sensei
Master the game of Othello with this intuitive app. Analyze top player games, discover new strategies, and play against the computer. Identify your mistakes and refine your gameplay to become a stronger player.
- Mistake checking
- Strategy improvement
- Learn new openings
- Analyze top player games
- Play against computer
- Analyze XOT games
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A strong, responsive, and user-friendly app to study the Othello game, that allows you to: - Check your mistakes and improve your strategy. - Learn new openings. - Analyze games from the top players in the world. - Play against the computer. - Play and analyze XOT games.
Screenshots
Verdict
The clearest difference is price: Othello Sensei at Free against SaioApp's $18.99. Othello Sensei also leads on in-app purchases (none vs 1). SaioApp's advantage is rating (5.0 vs 3.0) and update cadence (every 2 weeks vs every 3 months). On ratings volume, 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
Othello Sensei is free to download; SaioApp costs $18.99 up front. SaioApp sells 1 one-off in-app purchase. Othello Sensei asks for nothing beyond the download.
SaioApp holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 67% of SaioApp's written reviews are positive against 50% of Othello Sensei's.
SaioApp ships an update every 2 weeks, Othello Sensei every 3 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.
| Parameter | SaioApp | Othello Sensei |
|---|---|---|
| Price | $18.99 | Free — better |
| Rating | 5.0 (2 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 66.7% of reviews — better | 50.0% of reviews |
| Number of ratings | 2 | 2 |
| Update frequency | Every 2 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 10.1 — better | 13.0 |
| Further details — not scored | ||
| Size | 263 MB | 85 MB |
| Age rating | 4+ | 4+ |
| Developer | Benedetto Romano | Michele Borassi |
Customer experience
SaioApp
Othello Sensei
In-app purchases
SaioApp
- Saio Full Library$44.99
Othello Sensei
No in-app purchases









