Preview
Description
Calvin Chess Trainer drills the skills that puzzles take for granted: seeing the whole board, and reading and finding squares and moves without thinking. Daily warm-up Five quick timed drills, about five minutes: find the checks, spot the loose pieces, find the forks, name squares from Black's side, then a mate in one. Vision • Find Checks: every check in a real game position • Find Captures: every capture on the board • Hanging Pieces: every undefended piece • Forks & Skewers: the squares that hit two targets • Knight Sight: every square a knight reaches • Knight Flight: the fewest moves to the target • Pawn Attack: slip past a wall of pawns • Mate in 1: 400 positions, one move to mate Notation • Squares: find the square, fast, from White's side or Black's • Files & Ranks: name every file and rank • Read Moves: read a move, then play it • Piece Letters: K, Q, R, B and N at a glance • Piece Values: which side comes out ahead? Opening Explorer Play through the openings with book moves, Stockfish hints and an evaluation bar. Practice your way • Practice at your own pace, or race the clock in timed rounds • Every drill remembers its setup, and Continue picks up where you left off • Results show the answers you missed • Personal bests, saved on your device • Squares and pieces spoken aloud as you play • Works offline No ads, no in-app purchases and no account. From Internut Education.
What's New
Version 1.7.0 2026-10-07
Practice in silence: • A speaker button on the home screen and in every drill turns all sounds off, and back on • Calvin remembers your choice • Files & Ranks E... Technical Analysis
Package Overview Basic metadata
Bundle ID
education.internut.chesstrainer Current Version 1.7.0
Minimum iOS 15.0
Package Size App Store Size
Package Metadata 0 / 3 version records
Detailed binary, privacy manifest, framework, and Info.plist results have not been indexed for this package yet. The verified App Store and archive metadata above remains available.
Known Version Records
0 version records with stored package metadata • 3 known version records
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| Details | Version / IDs | Version date | Action |
|---|---|---|---|
| Not archived | App Store ID: 883202272 | Unknown | Request Version |
| Not archived | App Store ID: 883041252 | Unknown | Request Version |
| Not archived | App Store ID: 882871375 | Unknown | Request Version |