This app was mentioned in 3 comments, with an average of 4.67 upvotes
The following chess apps are on my main screen:
Chessbase: Great chess app with engine & opening book (not free, but worth it)
Follow Chess: Great app to follow international chess events (Freemium)
Shredder: Great offline tactics app (not free, but worth it)
Chesstempo: Great (web)app for tactics (Free)
Chessply: Great opening book management site (optimized for mobile, free)
Chessdrop: Great site to store your own otb games (optimized for mobile, freemium)
The following chess apps are on my main screen:
Chessbase: Great chess app with engine & opening book (not free, but worth it)
Follow Chess: Great app to follow international chess events (Freemium)
Shredder: Great offline tactics app (not free, but worth it)
Chesstempo: Great (web)app for tactics (Free)
Chessply: Great opening book management site (optimized for mobile, free)
Chessdrop: Great site to store your own otb games (optimized for mobile, freemium)
Yes. $9.13 well spent: https://play.google.com/store/apps/details?id=chessbase.android.chessdb&hl=en