Do you like watchfaces with binary time representation, but want to get better (faster) at mental conversion to decimal?

This watch app prompts you with randomly generated number from 1 to 59 (for 6-bit mode) and you type in your guess. Correct guess is confirmed with vibration, followed shortly by new prompt. Can also be changed to 5- or 4-bit mode.

As you go through the rapid fire drill, you will start recognizing patterns in the binary and get faster at converting to decimal!