OpeningBook
OpeningBook is made and published by Zhenghong Peng. AppBrain is an independent app data site and isn't affiliated with Zhenghong Peng. The app name, icon, screenshots and description belong to Zhenghong Peng and are shown as published on the App Store.
AppBrain's verdict
- Last updated
- September 5, 2026
- Size
- 4.02 MB
User feedback
Ratings and reviews on the App StoreComments on OpeningBook for iOS
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Store listing
By Zhenghong Peng, from the App Store
Description by Zhenghong Peng Written by the developer, not by AppBrain. Click to read.
BROWSE EVERYTHING
• Thousands of named openings and variations, organized by ECO volume (A–E), family, and line — sourced from the open Lichess openings database.
• Step through any line move-by-move on a real, playable board.
• Read key ideas and classic traps for the major openings.
SEARCH & FILTER
• Find any opening by name, ECO code, or move sequence.
• Filter by line length with a simple move-count slider.
TRAIN YOUR REPERTOIRE
• Add lines to your training set as White or Black.
• Drill them in a play-your-side-vs-app loop.
• Spaced repetition brings each line back for review at the right time.
100% offline. No account, no ads, no tracking.
Safety and technology
Found in the app by AppBrain- Price
- Free
- App size
- 4.02 MB
- Content rating
- Everyone
Technologies used by OpeningBook
Releases
Updates seen on the App Store- Version
- 1.0
- Launched
- September 2026
No changelog data
Alternatives
Similar apps and more from Zhenghong PengAlternatives to OpeningBook
Rankings
App Store top chartsApp Store Rankings for OpeningBook
About the app and developer
About OpeningBook
OpeningBook is an education app developed by Zhenghong Peng.
What is the rating of OpeningBook?
OpeningBook has no ratings yet.
Is OpeningBook free?
OpeningBook is free. The app size is 4.02 MB. The latest version available is 1.0. The last update was on September 5, 2026.
What are the requirements for OpeningBook?
The app has a content rating of Everyone. The app has been available on the App Store since September 2026.
Developer information for Zhenghong Peng
Address:
Frequently asked questions about OpeningBook
Is OpeningBook free?
Yes. OpeningBook is free on the App Store.
Is OpeningBook still available?
Yes. OpeningBook is on the App Store, and the last update we saw was on September 5, 2026.
How large is OpeningBook?
OpeningBook is 4.02 MB.
Is OpeningBook suitable for children?
App Store rates the content of OpeningBook as suitable for everyone.
Who made OpeningBook?
OpeningBook was developed by Zhenghong Peng. It is listed in the education category on the App Store.
What are the best alternatives to OpeningBook?
People looking at OpeningBook also look at these education apps: Kawn: Science Encyclopedia, RabbitHole: Dive In, ChessMovio - Chess Study Hub, Epoch History Timeline, MainLine: Chess Trainer.