# Chess Opening Book — Train your opening repertoire

> Train your opening repertoire (iPhone/iPad app by Mert Kuplulu.)

- Source: https://appshunter.io/ios/app/chess-opening-book/id6809224647 (this page in markdown: same URL + `.md`)
- Developer: [Mert Kuplulu](https://appshunter.io/developer/6809224649)
- Category: Education, Games, Board
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 12 MB
- Languages: American English
- Released: 2026-09-28
- Data updated: 2026-09-29

## What is Chess Opening Book?

Chess Opening Book turns the openings you half-remember into moves you know by instinct.

Choose an opening, pick a side, and practice it move by move until the line becomes second nature. Play the right move and keep going. Make a mistake, and the app takes you back to the beginning so you can reinforce the full sequence.

TWO WAYS TO TRAIN

• Many Reps — Learn three moves at a time. Each repetition starts from move one, helping you build the entire line into memory.

• Study — See every move in the line without repetition. Ideal for learning an opening for the first time or refreshing one you already know.

WHAT'S INSIDE

• 30 opening lines across 20 families, from the Italian Game to the King's Indian Defence
• Both sides of every line — learn to play it as White and respond to it as Black
• A skill map that shows what you've learned and what is due for review
• Spaced repetition that automatically brings openings back when it's time to practice them
• Pin two openings to your home screen for instant access
• Three visual themes
• Available in English and Turkish

FIND MY OPENING

Not sure what to learn next? Answer five questions about the way you like to play, and Chess Opening Book will suggest openings that match your style.

Recommendations for White are free. Recommendations for Black are included with the Black Repertoire subscription.

NO ACCOUNT. NO INTERNET. NO TRACKING.

Everything happens on your device. There is no account to create, nothing is uploaded, and training works completely offline.

Your progress stays yours. Export your training data as plain text from Settings and import it on another device whenever you want.

BLACK REPERTOIRE

Unlock opening recommendations for Black and access new defensive lines as they are added to the library.

Black Repertoire is a monthly subscription that renews automatically unless cancelled. Payment is charged to your Apple ID at confirmation of purchase. You can manage or cancel your subscription at any time through your Apple ID settings.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://kuplulumert.github.io/chess-opening-book/privacy.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Black repertoire | $1.99 | per month |


## Is Chess Opening Book safe?

Not enough ratings yet to assess Chess Opening Book.

## Is Chess Opening Book legit?

Chess Opening Book has limited verification signals. The AppsHunter Legitimacy Score for Chess Opening Book is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-09-28

No release notes.

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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 2026-09-29.*