Mahjong Win! vs Birder Diary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mahjong Win!
This app uses AI to recognize Mahjong tiles from photos, automatically calculating han, fu, and scores. It simplifies complex Japanese Mahjong rules for players of all levels, allowing for more enjoyable face-to-face games with friends.
- AI tile recognition
- Automatic yaku identification
- Han and fu calculation
- Accurate score calculation
- User-friendly interface
- Fast local processing
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Japanese Mahjong (Riichi Mahjong) is a popular tabletop game, but its complex rules make it difficult for many players to accurately calculate the number of han and scores. To solve this problem, we have developed "Mahjong Win! - Smart Japanese Mahjong Helper" to help everyone play face-to-face with friends. Mahjong Win! is a powerful and practical Mahjong assistant app, whose main function is to quickly and accurately calculate the number of han, fu, and scores for players based on photos taken of the playing table. Whether you are a beginner or an experienced player, after using our application, you will be able to enjoy the fun of Japanese Mahjong more conveniently. [Features] • Tile recognition: Using artificial intelligence technology, our app can intelligently recognize the tiles on the photos, including numbers, suits, and wind directions, to ensure accurate display. • Yaku identification: Yaku is an important indicator for calculating scores in Japanese Mahjong. Our application can automatically analyze the player's hand tiles and melds, and quickly identify yakuman based on the rules, allowing you to focus on the game itself. • Number of han and fu: Our application can automatically calculate the number of han and fu based on factors such as tile patterns and yaku, avoiding tedious manual calculations and saving time and effort. • Score calculation: Score calculation in Japanese Mahjong is extremely complicated. Our app can accurately calculate the score for you, making game settlement easier and allowing you to enjoy the joy of winning. [Highlights] • User-friendly interface: Our application has a simple and intuitive user interface, making operations easier and more natural. No need for complicated settings, just take photos to enjoy the convenient services of calculating number of han, fu, and scores. • Powerful tile recognition: Our AI algorithm has been carefully trained to efficiently and accurately recognize common Mahjong tiles. • Extraordinary calculation efficiency: With the built-in efficient AI recognition and calculation engine, our software can run locally quickly, saving a lot of time and allowing you to focus more on the game experience. • Timely updates: Our team will continue to improve and enhance the functionality of the application, adding more auxiliary functions. If you have any suggestions, welcome to communicate with us through the in-app feedback. After using the "Mahjong Win!" assistant, we hope you will experience the great convenience brought by the powerful features of this application. Whether you are a beginner or an expert in Japanese Mahjong, we sincerely hope that "Mahjong Win!" can bring you fun and the joy of success in your game journey, and enjoy pleasant matches with friends!
Birder Diary
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Birder Diary is a lightweight and elegant birding journal. Take or import bird photos, and the app automatically identifies the species. Your sightings are saved to your personal bird guide and marked on the map as your birding footprints. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Birder Diary at Free against Mahjong Win!'s $4.99. Mahjong Win!'s advantage is in-app purchases (none vs 2) and update cadence (every 3 days vs every 11 days). On ads, device support 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
Birder Diary is free to download; Mahjong Win! costs $4.99 up front. Birder Diary sells 2 in-app purchases, starting at $2.99 per month. Mahjong Win! asks for nothing beyond the download.
Mahjong Win! ships an update every 3 days, Birder Diary every 11 days. The most recent releases landed on September 11, 2026 and September 18, 2026 respectively.
| Parameter | Mahjong Win! | Birder Diary |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.0 (3 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 3 days — better | Every 11 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 58 MB | 17 MB |
| Age rating | 12+ | 4+ |
| Developer | Potatso Lab LTD | 周 王 |
In-app purchases
Mahjong Win!
No in-app purchases
Birder Diary
- PRO Monthly$2.991 Month
- PRO Annual7 Days trial$19.991 Year









