I love covering small, niche and well designed apps and Flib is one of them. Flib is a very powerful conversion app which is absolutely gorgeous. It can convert angle, area, base, data, energy, length, mass, power, pressure, speed, temperature, time and volume. It's very simply designed and you can choose from 12 different colours. The user experience isn't the best, it could do with some gestures, but it works and that's what counts. It fits Android phones and tablets.