Opening Trainer: chess opening drill trainer

About this app

What Opening Trainer does

You have watched the videos and you know the moves — right up until you are actually at the board and your opening evaporates. Opening Trainer fixes that the way flashcards fixed vocabulary: it turns the lines you play into a spaced-repetition deck and quizzes you on the exact positions you keep missing. Build a repertoire for White or Black by simply playing the moves on an interactive board — the main line, the sidelines, and your opponent's replies. Name each line (‘Italian — main’, ‘Caro-Kann — Advance’) and Opening Trainer automatically creates a review card for every move you are responsible for. Then Drill mode shows you a position and asks you to play your move on the board. Get it right and the card schedules further into the future; miss it and it comes back today. An SM-2 style scheduler — the same algorithm behind serious language apps — keeps your weak spots in front of you and lets the moves you already know fade to the back. Everything is offline. There is no account, no server, and nothing is ever uploaded. Your repertoires and your entire review history live only on your device, so you can drill on a plane, on the subway, or anywhere with no signal. And there is no engine looking over your shoulder — Opening Trainer plays no games against you and makes no evaluation claims. It is a study tool, plainly and honestly, built to move your openings into long-term memory. • Build repertoires for White and Black on an interactive board • Save named lines with the opponent's replies included • Drill mode: play the correct move on the board, with instant right/wrong feedback • SM-2 spaced repetition surfaces the positions you keep missing • Today screen shows exactly how many positions are due • Repertoire tree merges your lines and flags weak nodes • Mistake heatmap of your shakiest positions • 100% offline — no account, no server, no engine, nothing uploaded Opening Trainer is a personal study tool for your own opening repertoire. It is not affiliated with any chess site and does not provide online play or engine analysis.