Chess Openings Explorer Proios
Explore chess openings and their variations through a simple and friendly interface, and learn the follow-ups from 2 million+ Grandmaster games! Main features: - Complete dictionary of chess openings and their variations - Browse Grandmaster games associated with each opening - Test your knowledge with various Quiz modes: The app picks an opening and your goal is to either find its name, find which move is best, or play the moves that leads to the opening - Accurate stats for each position: % of wins, losses, draws - Powerful built-in Chess engine (2800+ Elo) to analyze any position - Games can be exported to other apps (PGN format) - Search openings by name or ECO code - Easy to use, simple and clean interface - Full translations in French and German, including opening names - And of course, new features will be added over time!

Screenshots

Store gallery · 5
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#3
South Africa · paid
Games · Board
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Cape Verde · paid
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Liberia · paid
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South Africa · paid
Games · Puzzle
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Russia · paid
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Store presence

As of Jul 4, 2026stale (74d)
Rating 4.55
Ratings 348
Price $3.99
Version
Updated
Released Apr 22, 2018

Rank grid

Current rank by country × genre, shown as color bands
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Games · Board
331
58
76
9911
Games · Puzzle
98

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Version history

Versions observed at capture, newest first
v1.11Apr 12, 2020
Improved dark mode support

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Dated releases · rank and review signals, 14 days before → after

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