Anki is a program which makes remembering things easy. Because it's a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.
Note: This unofficial snap is authorized by maintainer, Damien Elmes. Related discussion can be referred by: https://github.com/dae/anki/pull/291
Official anki on github: https://github.com/dae/anki
For snap development, it's maintained by my github: https://github.com/woodrow-shen/anki-snap/tree/core20-master
Update: The snap will restart to maintain its upstream version based on core20 as the build environment is under Ubuntu 20.04 to fit upstream dependency requirements.