No revenue estimate for the App Store: Apple publishes no install counts, and its star-rating counts don't calibrate to sales the way Steam's written reviews do. Reviews and prices only.
Chess Echo is the chess app that talks to you. Every move is announced aloud in a natural, neural voice — captures, checks, castling, promotions, checkmate. Not a robotic beep: a real-sounding voice that makes every game feel alive. And it all runs entirely on your phone. No internet, no account, no ads, nothing tracked. CHOOSE YOUR OPPONENT Four voices, four personalities. Heart, the warm American coach who celebrates your best moves. Michael, the playful rival who will absolutely comment when a queen is captured. Emma, the dry British wit. Lewis, the old-world gentleman who apologises before capturing. They react to the game as you play — captures, checks, blunders, victories. PLAY YOUR WAY • Three difficulty levels, honestly tuned — Beginner is beatable, Hard will make you work • Standard, 10-minute, and 2 Players (pass-and-play) modes • Spoken hints when you're stuck • Narrated replay of your finished games • Full rules: castling, en passant, promotion, and proper draw detection • A hidden oracle — tap the title for some magic-8-ball fun. THREE DISTINCT BOARDS Neon — glowing arcade signature look. Classic — warm wood and cream. Terminal — 1979 green phosphor. Each with matching sound effects. OFFLINE AND PRIVATE Everything is bundled in the app. Play on a plane, in a tunnel, anywhere. The privacy label says "Data Not Collected" because there is nothing to collect. Voice: Kokoro-82M open-source neural text-to-speech.
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Price over time on the United States storefront, quoted in USD — from our own daily price tracking. Other markets are listed under "Price by market" in the Prices tab; they are not on this axis, because one line cannot be two currencies.
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