I'm looking for a completely free opening trainer where I can add moves (with no limitations) and practice them (preferably with spaced repetition).
Lichess study is a good feature with a database but practice with it becomes challenging. Chessbook is also a good option but limits free users to 100 moves per colour.
Lichess study is a good feature with a database but practice with it becomes challenging. Chessbook is also a good option but limits free users to 100 moves per colour.