---
title: "Chess Opener PRO - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "Features: - Chess opening tree with game statistics - The Encyclopedia of Chess Openings (ECO) - Database of top 100+ grandmasters’ repertoires - Stockfish chess engine analysis - Compare ECO, opening"
---

# Chess Opener PRO — United States
> Chess opening trainer

![Chess Opener PRO App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/eb/56/a1/eb56a1c4-9644-0340-b7bc-0c2386726b62/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [Stanislav Basovnik](https://apptail.io/developer/stanislav-basovnik-ISac)
**Category:** Games
**Rating:** 4.4/5 (80 ratings)
**Price:** Free
**Bundle ID:** com.bgames.chessopenerpro
**Store:** Apple App Store
**Country:** United States
**Version:** 1.25.1 (released 2026-01-25)
**Original Release:** 2020-03-02
**Languages:** English, French, German, Spanish

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1489282483)
**AppTail Page:** [https://apptail.io/app/chess-opener-pro-kbmb/united-states](https://apptail.io/app/chess-opener-pro-kbmb/united-states)

## Chess Opener PRO Description
Features:
- Chess opening tree with game statistics
- The Encyclopedia of Chess Openings (ECO)
- Database of top 100+ grandmasters’ repertoires
- Stockfish chess engine analysis
- Compare ECO, opening tree and engine moves side by side in any position
- Import and export chess openings in PGN format
- Build your own opening repertoire
- Add or edit comments on moves
- Automatically classify any sequence of moves using the ECO system
- Chess opening explorer highlights moves already in your repertoire
- Chess database includes all transpositions
- Interactive trainer to memorize your chess openings and variations
- Train multiple variations at once against random opponent moves from your repertoire
- Set up a starting position for training
- Track your training progress
- Customize chessboard colors and chess pieces
- Supports dark mode
- No ads
- Works completely offline

CHESS OPENING EXPLORER
Search in the Encyclopedia of Chess Openings, browse the chess opening tree, explore the opening repertoires of famous chess grandmasters, or ask the chess engine to find the best moves. Swipe left or right to switch between the exploration features in any position.

BUILD YOUR OPENING REPERTOIRE
Add your favorite opening lines to your repertoire using the chess opening explorer or import your openings in PGN format from other chess programs. You can always edit the names of your openings and organize them in your repertoire.

OPENING TRAINER
A simple and efficient method to memorize variations of openings in your repertoire. You can train either white’s moves or black’s moves only or both. Optionally, you can train all variations at once. The trainer chooses the opponent’s moves randomly from your opening repertoire. Chess Opener tracks your progress and shows your stats.

## Chess Opener PRO Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/53/b7/3b/53b73b66-c5dc-1a0e-f95d-49c5365eda51/d06a167a-d362-4041-a9c3-9096920f1923_1_-_iPhone_11_Pro_Max_-_2023-05-21_at_19.06.08.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/8d/33/ba/8d33ba43-56ee-45fd-00d9-6c63a24b4303/e53a1870-87ac-41d2-919a-538d639bac69_2_-_iPhone_11_Pro_Max_-_2023-05-21_at_19.10.10.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/d1/e9/64/d1e964de-16a5-5eb7-880c-7efdedf512f0/e6211c46-efab-4b73-bbdd-462ef577b592_3_-_iPhone_11_Pro_Max_-_2023-05-21_at_19.12.51.png/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/22/4b/ac/224bacaa-6080-f1f2-3cf8-d367520e7c2c/32874d30-6324-4dbc-9c85-895928e71042_4_-_iPhone_11_Pro_Max_-_2023-05-21_at_19.14.34.png/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/db/c6/d7/dbc6d783-e6fd-fc01-f3e2-37d500dd3c7a/00cd2b93-2398-4041-85c2-8dba9f9755eb_5_-_iPhone_11_Pro_Max_-_2023-05-21_at_19.15.22.png/1242x2688.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/3c/b5/e7/3cb5e779-01e4-b757-b7cf-2986c2c01735/e51d5fb0-4180-4753-9015-a2cfb2befb8b_6_-_iPhone_11_Pro_Max_-_2023-05-21_at_19.16.12.png/1242x2688.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/98/3d/3a/983d3a52-9733-309b-71d3-e798b287aa5c/2c19b418-4f61-48ad-8f4e-0ad5bb6d9ff3_7_-_iPhone_11_Pro_Max_-_2023-05-21_at_19.17.47.png/1242x2688.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/f4/36/30/f4363062-c6d9-beff-0d99-13fa6b1c311f/9c1469cf-21d7-4725-b27a-de42f21c5a29_8_-_iPhone_11_Pro_Max_-_2023-05-21_at_19.19.45.png/1242x2688.png)

## Chess Opener PRO Rating Breakdown in United States
- 5 stars: 61 (76%)
- 4 stars: 6 (8%)
- 3 stars: 4 (5%)
- 2 stars: 2 (3%)
- 1 stars: 7 (9%)

## Chess Opener PRO Reviews in United States

### ****- "Feature needed"
This app is nearly perfect. I would only like a feature that allows me to start study from a later position in game by importing starting at e.g. move 17. Would have emailed this privately but could not find email. Would be happy to change review to 5 stars.
-- n88819, 2025-08-29

### ***** "Best app to learn openings"
Awesome app. Has 1000s of openings and various ways to learn and practice. Highly recommend it. The best of its kind.
-- JJ456Gospel, 2025-06-29

### ***-- "Hard to understand but clearly powerful"
Where can I get a user guide on how to use this app?  It’s clearly powerful but it needs instructions.  I’ll improve my review if I can get some help information.
-- Some guy in Seattle, 2025-02-20

### ***** "Great app"
My favorite opening trainer!
-- Pawn_mower (ALT Account), 2025-01-23

### ***** "What I am looking for"
I have many options on PC for viewing databases and the opening tree of how often moves are played in a certain position. I have explored several apps for iPhone and iPad and none of them even come close to what I want. But this app really does it. It’s very close to chessx or scid on PC. I will use this for my chess students!
-- Chandler Klebs, 2024-11-26

### *---- "Invalid PGN"
I have a pgn that other apps in android and window pgn readers can open, but this can’t?
-- jphturtle2, 2024-07-07

### ***-- "Good with a lot of petential"
This app is just good. A bit confusing to use but when you get the hang of it than it is just good. 

Crashes quite often and needs a update asap.
-- Aris 😊, 2024-02-27

### ***** "Amazing App"
Really nice and you can review lines while training. I have tried them all and this is the best for the serious tournament player.
-- DrHotBunz, 2024-02-08

### ***** "Brilliant"
Amazing prep tool!
-- Northstar919, 2023-11-01

### ***** "Best chess opening trainer for iPad"
Very happy with this training tool. Well worth the money for the pro version.

Could use iCloud integration to keep the databases the same on all devices. Easy 5 stars even without this.
-- MorphyP, 2023-07-04

[View all Chess Opener PRO reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)



## Chess Opener PRO Discovered Keywords
- chess opener pro

## Apps Similar to Chess Opener PRO
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## Chess Opener PRO Available In
- [United States](https://apptail.io/app/chess-opener-pro-kbmb/united-states)
- [Germany](https://apptail.io/app/chess-opener-pro-kbmb/germany)
- [France](https://apptail.io/app/chess-opener-pro-kbmb/france)
- [United Kingdom](https://apptail.io/app/chess-opener-pro-kbmb/united-kingdom)
- [Italy](https://apptail.io/app/chess-opener-pro-kbmb/italy)
- [Canada](https://apptail.io/app/chess-opener-pro-kbmb/canada)
- [Switzerland](https://apptail.io/app/chess-opener-pro-kbmb/switzerland)
- [Spain](https://apptail.io/app/chess-opener-pro-kbmb/spain)
- [Netherlands](https://apptail.io/app/chess-opener-pro-kbmb/netherlands)
- [Australia](https://apptail.io/app/chess-opener-pro-kbmb/australia)
- [Greece](https://apptail.io/app/chess-opener-pro-kbmb/greece)
- [India](https://apptail.io/app/chess-opener-pro-kbmb/india)
- [South Africa](https://apptail.io/app/chess-opener-pro-kbmb/south-africa)
- [Poland](https://apptail.io/app/chess-opener-pro-kbmb/poland)
- [Norway](https://apptail.io/app/chess-opener-pro-kbmb/norway)
- [Brazil](https://apptail.io/app/chess-opener-pro-kbmb/brazil)
- [Austria](https://apptail.io/app/chess-opener-pro-kbmb/austria)
- [Mexico](https://apptail.io/app/chess-opener-pro-kbmb/mexico)
- [Dominican Republic](https://apptail.io/app/chess-opener-pro-kbmb/dominican-republic)
- [Belgium](https://apptail.io/app/chess-opener-pro-kbmb/belgium)
- [Belarus](https://apptail.io/app/chess-opener-pro-kbmb/belarus)
- [Chile](https://apptail.io/app/chess-opener-pro-kbmb/chile)
- [Ireland](https://apptail.io/app/chess-opener-pro-kbmb/ireland)
- [Israel](https://apptail.io/app/chess-opener-pro-kbmb/israel)
- [South Korea](https://apptail.io/app/chess-opener-pro-kbmb/south-korea)
- [Malaysia](https://apptail.io/app/chess-opener-pro-kbmb/malaysia)
- [New Zealand](https://apptail.io/app/chess-opener-pro-kbmb/new-zealand)
- [Philippines](https://apptail.io/app/chess-opener-pro-kbmb/philippines)
- [Portugal](https://apptail.io/app/chess-opener-pro-kbmb/portugal)
- [Romania](https://apptail.io/app/chess-opener-pro-kbmb/romania)
- [Russia](https://apptail.io/app/chess-opener-pro-kbmb/russia)
- [Slovenia](https://apptail.io/app/chess-opener-pro-kbmb/slovenia)
- [Thailand](https://apptail.io/app/chess-opener-pro-kbmb/thailand)
- [Türkiye](https://apptail.io/app/chess-opener-pro-kbmb/turkey)
- [Sweden](https://apptail.io/app/chess-opener-pro-kbmb/sweden)
- [Denmark](https://apptail.io/app/chess-opener-pro-kbmb/denmark)
- [Iceland](https://apptail.io/app/chess-opener-pro-kbmb/iceland)
- [Czechia](https://apptail.io/app/chess-opener-pro-kbmb/czechia)
- [Japan](https://apptail.io/app/chess-opener-pro-kbmb/japan)
- [Uzbekistan](https://apptail.io/app/chess-opener-pro-kbmb/uzbekistan)
- [Kuwait](https://apptail.io/app/chess-opener-pro-kbmb/kuwait)
- [Kazakhstan](https://apptail.io/app/chess-opener-pro-kbmb/kazakhstan)
- [Lebanon](https://apptail.io/app/chess-opener-pro-kbmb/lebanon)
- [Sri Lanka](https://apptail.io/app/chess-opener-pro-kbmb/sri-lanka)
- [Madagascar](https://apptail.io/app/chess-opener-pro-kbmb/madagascar)
- [Hungary](https://apptail.io/app/chess-opener-pro-kbmb/hungary)
- [Indonesia](https://apptail.io/app/chess-opener-pro-kbmb/indonesia)
- [Singapore](https://apptail.io/app/chess-opener-pro-kbmb/singapore)
- [Mauritius](https://apptail.io/app/chess-opener-pro-kbmb/mauritius)
- [Colombia](https://apptail.io/app/chess-opener-pro-kbmb/colombia)
- [Slovakia](https://apptail.io/app/chess-opener-pro-kbmb/slovakia)
- [Nigeria](https://apptail.io/app/chess-opener-pro-kbmb/nigeria)
- [Brunei](https://apptail.io/app/chess-opener-pro-kbmb/brunei)
- [Vietnam](https://apptail.io/app/chess-opener-pro-kbmb/vietnam)
- [Peru](https://apptail.io/app/chess-opener-pro-kbmb/peru)
- [Argentina](https://apptail.io/app/chess-opener-pro-kbmb/argentina)
- [Pakistan](https://apptail.io/app/chess-opener-pro-kbmb/pakistan)
- [Taiwan](https://apptail.io/app/chess-opener-pro-kbmb/taiwan)
- [Paraguay](https://apptail.io/app/chess-opener-pro-kbmb/paraguay)
- [Ukraine](https://apptail.io/app/chess-opener-pro-kbmb/ukraine)
- [Azerbaijan](https://apptail.io/app/chess-opener-pro-kbmb/azerbaijan)
- [Saudi Arabia](https://apptail.io/app/chess-opener-pro-kbmb/saudi-arabia)
- [Egypt](https://apptail.io/app/chess-opener-pro-kbmb/egypt)
- [Estonia](https://apptail.io/app/chess-opener-pro-kbmb/estonia)
- [Finland](https://apptail.io/app/chess-opener-pro-kbmb/finland)
- [Ecuador](https://apptail.io/app/chess-opener-pro-kbmb/ecuador)
- [Algeria](https://apptail.io/app/chess-opener-pro-kbmb/algeria)
- [United Arab Emirates](https://apptail.io/app/chess-opener-pro-kbmb/united-arab-emirates)
- [Hong Kong SAR China](https://apptail.io/app/chess-opener-pro-kbmb/hong-kong)
- [Honduras](https://apptail.io/app/chess-opener-pro-kbmb/honduras)
- [Croatia](https://apptail.io/app/chess-opener-pro-kbmb/croatia)
- [Malta](https://apptail.io/app/chess-opener-pro-kbmb/malta)
- [Bulgaria](https://apptail.io/app/chess-opener-pro-kbmb/bulgaria)
- [Bermuda](https://apptail.io/app/chess-opener-pro-kbmb/bermuda)

---

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