When HN users recommended it
1 HN user recommended this in 2014, in one comment.
20072026
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
1 HN user recommended this in 2014, in one comment.
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
Get a GymBoss interval timer. Great for exercise, and can accomplish this perception thing. (it has a vibrate-only mode).
http://www.amazon.com/Gymboss-Interval-Timer-Stopwatch-METAL...