Chessable is really great if you know how to use it.
First of all, the website is conceived in a way that you don’t want to miss a single day of training. My streak there is almost 600 days. The second thing is that you have a community to discuss your progress, to ask questions about enigmatic moves in a repertoire, etc. I am the guy who probably asked more question than everybody else there, and the answers come often from titled players, FMs, IMs and some GMs.
You have also a leaderboard in every book, so you will have additional motivation to review your lines regularly.
We should not forget that Chessable is based on spaced repetition. That means that you are able to learn a repertoire with 200 or more lines if you are consequent in your training. I think I learned more than 5 thousands positions there (unfortunately I chanced my repertoire for black against 1.e4 several times, so I still need a lot of reviews to get a solid defence).
There are several free books there to give a try. I can recommend some if you need help. They have books on tactics, endgames, strategy and openings, and several are free. You just have to register.
I was wondering if Chessable is worth using?