Nicely done. Glad you took the time to get away from Flash and support mobile, even if I'm usually on desktop.
Minor bug report: When either the player or the computer goes over 21, the brief display of the hand total is always 23, even when the total is actually something else. For example, the trainer displayed a total of 23 for the following hands in a recent session: 48K (24), A92Q (22), A4KQ (25), KQ2 (22), JJ2 (22), 448K (26), 834K (25), 2JQ (22). While that doesn't really impact playability -- and the hand outcomes are still accurate -- it'd be nice to not display an inaccurate hand total. Observed on MacOS Sierra 10.12.6 on Chrome, Firefox, & Safari (couldn't get past the loader on Opera), and Android Nougat 7.1.1 Chrome.
Thanks for the continuing support of the trainer, and for finally bringing the Forum back to life!