Chessbook

Pros

• If you're going to use it to train openings or build opening repertoires, then I would suggest, Chesstempo, or Chessable, or Chessbook, or any number of other much much better tools.
• chessbook.com is the best alternative. It's actually just better than Chessable in my opinion.
• I found Chessbook and Chess Prep Pro to work best for that purpose
• Yeah there’s actually a lot of these. Chessdriller Chesstraining(.)app Chessbook
• Sounds like Chessbook would be what you want?

Cons

• I still use and love the app, but I do mostly manual repetition (picking a position and doing “practice all moves from here”) instead of automated. ... my only issue is that the spaced repetition schedule doesn’t work for me at all. The...
• I’ve used Chessbook off and on over time as an opening repertoire trainer. That said, I’ve never loved it and have some issues.
• This is what hinders me to use chessbook more since I dont want to go through this once again for my black repertoire.
• Chessbook is 80$ which is just crazy and with chesstempo you have a lot of other stuff.
• Take, for example, the Advance Variation of the French Defense: there are a lot of lines where dxc5 is playable, but to really understand whether you should play it or not, you can’t just rely on Chesstempo or ChessBook.