# ChessFan: Notation & PDF — Detect Boards · Practice Chess

> Detect Boards · Practice Chess (iPhone/iPad app by 丽娟 刘.)

- Source: https://appshunter.io/ios/app/chessfan-notation-and-pdf/id6761381966 (this page in markdown: same URL + `.md`)
- Developer: [丽娟 刘](https://appshunter.io/developer/979088935)
- Category: Education, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 125 MB
- Languages: English
- Released: 2026-05-03
- Data updated: 2026-06-28
- User reviews in markdown: https://appshunter.io/ios/app/chessfan-notation-and-pdf/id6761381966/reviews.md

## What is ChessFan?

ChessFan is a chess PDF reader designed for players, coaches, and students.

Import your chess books in PDF, detect chessboards on each page, recognize pieces with on-device ML, generate FEN, and jump directly into interactive puzzle practice.

Key features:
- Scan and digitize handwritten score sheets with AI
- Review, edit, and replay games from score sheets on an interactive board
- PDF chess book reading with smooth page navigation
- Automatic board detection on PDF pages
- Piece recognition and FEN generation
- Edit and verify FEN before practice
- Interactive puzzle practice board
- Save and review practice history
- Coach-student workflow for training feedback
- Offline-first design: core recognition runs on your device
- Multi-language UI support

Privacy-focused by design:
- Your PDF files stay on your device
- Board recognition ML runs locally on-device
- Score sheet images are temporarily sent to our AI service for recognition and not permanently stored
- Recognized move data may be saved to cloud for Pro/Coach subscribers

Subscription:
- Free tier available
- Paid plans unlock advanced cloud and coaching features

Need help? Contact: service@aifetel.cc

Terms of Use: https://oysape.web.app/terms.html
Privacy Policy: https://oysape.web.app/privacy.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Coach Yearly | $59.99 | per year |
| Basic Monthly | $3.99 | per month |
| Coach Monthly | $5.99 | per month |
| Basic Yearly | $39.99 | per year |
| Pro Monthly | $4.99 | per month |
| Pro Yearly | $49.99 | per year |



## Version history (last 3 releases)

### 0.2.8 — 2026-05-28

Improvements and fixes

### 0.2.5 — 2026-05-14

Improvements and fixes

### 0.1.2 — 2026-05-04

No release notes.

## More apps by 丽娟 刘

- [Mildred - Docker, SSH Client](https://appshunter.io/ios/app/mildred-docker-ssh-client/id1522800022)
- [Oysape](https://appshunter.io/ios/app/oysape/id6502843590)

All apps by 丽娟 刘: https://appshunter.io/developer/979088935

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-28.*