... bodyweight training/calisthenics skill-learning app where you can learn your first bar muscle-up (and pull ups on the way) by following a progressive training protocol and passing belt exams familiar from judo (next 'dojo' is going to be handstand). As a product newbie, I agree it's great to be able to test what I'm building all the time and I feel a lot more comfortable making improvements when I know well what's missing or needs adjustments ... ... often check PC hardware on the second-hand market, and a genuinely good deal can disappear in less than an hour. I wanted a fast way to see whether the price is actually good, compare the hardware with alternatives