iEdax vs OTHELLO KING
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
iEdax
Analyze your Reversi games with a powerful AI engine. Features include game analysis, graph visualization, and saving/loading game records. Import games via text or camera.
- Edax AI analysis
- Game analysis graphs
- Save and load game records
- Import game records (text/camera)
- Twitter screenshot sharing
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This is application to analyze reversi. This application is equipped with Edax which is the strong reversi program. This application can do the next thing. ・ Indication of the evaluations of Edax ・ Analysis of a game, graph indication of the analysis result ・ Save and load of the record of a game ・ Import of the record of a game of the form "f5d6c3..." ・ Import of the board with the camera ・ Contribution to Twitter of the screenshot [About Edax] Edax is the reversi program that Mr. Richard Delorme developed. Edax http://abulmo.perso.neuf.fr/ Edax of this application uses the source code changed Edax version4.3. Source code (GPL License) https://drive.google.com/drive/folders/0B_pCPk8yzIWMbDRYZnJhQllrNzQ?usp=sharing
OTHELLO KING
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Easy to learn. Impossible to put down. OTHELLO KING is an Othello app crafted for players who take the game seriously. An NNUE-powered 8-level AI engine, a complete ranking system, and a lifelike playing experience — every game is worth your best effort. ◆ NEXT-GEN AI ENGINE Eight AI opponents powered by an NNUE deep-learning engine — Beginner, Novice, Intermediate, Advanced, Expert, Master, Grandmaster, King. From a gentle introduction to near world-class play, every level is calibrated through real human playtesting so the difficulty curve feels just right. The first five levels are free; unlock Pro for the top three: Master, Grandmaster, King. ◆ YOUR PATH TO MASTERY An Elo rating system anchored to each AI's calibrated strength makes every match meaningful. Start at 30 Kyu, earn your way up through wins, and climb toward the highest rank — 9 Dan. Review any game move by move with free Mobility Analysis; unlock Pro for Frontier Analysis and AI Analysis. It's not just playing — it's a journey of continuous improvement. ◆ LIFELIKE PLAY Every detail is tuned for a natural, immersive experience. Humanized AI thinking rhythms, natural response timing, ultra-realistic move sounds, and subtle haptic feedback — paired with multiple board themes and piece styles — make every opponent feel like a real player sitting across from you. ◆ PURE & AD-FREE No intrusive ads. No personal data collection. All your settings and game records stay on your device. Focus on the board. Enjoy pure Othello. ◆ AND MORE • Two-Player: Pass-and-play with a friend, unlimited games • Timer Modes: 1-min Bullet, 3-min Blitz, 5-min Standard, 30-min Tournament & more • Game Review: Step through any match, copy records & analyze in Practice Lab • Progressive Challenge: Stronger AI unlocks as you rank up — always a new goal ahead Play the first five AI levels free: Beginner, Novice, Intermediate, Advanced, Expert. A one-time Pro purchase permanently unlocks the top three AI levels and advanced Practice Lab analysis tools. ◆ PRO — UNLOCK FOREVER · AI Opponents L6–L8: Master, Grandmaster, King · Board Themes: Royal Purple, Light Oak, Walnut · Piece Styles: 3D, Matte · Move Sounds: Classic, Minimal · Practice Lab: Frontier Analysis, AI Analysis One purchase. Yours forever. No ads. No subscriptions. Just the game.
Screenshots
Verdict
The clearest difference is price: OTHELLO KING at Free against iEdax's $2.99. OTHELLO KING also leads on update cadence (weekly vs every 3 weeks). iEdax's advantage is in-app purchases (none vs 1) and device support (3 vs 1). On ads 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 KING is free to download; iEdax costs $2.99 up front. OTHELLO KING sells 1 one-off in-app purchase. iEdax asks for nothing beyond the download.
iEdax ships an update every 3 weeks, OTHELLO KING weekly. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.
| Parameter | iEdax | OTHELLO KING |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.0 (3 ratings) — better | — |
| Positive reviews | 45.5% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 8.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 88 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Naoki Hamada | JUI-MING CHIU |
In-app purchases
iEdax
No in-app purchases
OTHELLO KING
- Pro — Unlock Forever$6.99









