This add-on makes the 1, 2, 3, and 4 keys context-aware during review.
Normally in Anki, pressing 1-4 only grades a card after the answer is shown. With this add-on:
1/2/3/4 while the question is visible -> show the answer
1/2/3/4 while the answer is visible -> grade the card normally
This is especially useful for people reviewing with a keyboard, numpad, or 8BitDo controller. For example, you can map the controller buttons X, A, Y, and B to 1, 2, 3, and 4, then use the same buttons both to reveal the answer and to grade the card.
Example workflow:
Press 3 once -> show answer
Press 3 again -> grade as Good
Tested on Anki Desktop on Windows.