Very rudimentary apps, supporting only part of functions provided by P12 band: ECG, steps counting ( calories, distance), hearth beats, blood pressure, sleep quality. No oxygen level, no breath frequency are supported by app ( despite provided by the P12 band). The messaging (5 last messages) are working fine. The blood pressure is a joke! Fitness function ( there are 3 kind of fitness) in fact are the same, still providing useful information. In fitness mode the heart beat function surprisingly working not bad!
Still , the P12 manufacturer should push the app author significantly improve the app to get visibility on the market. P12 band has good potential that is unused by 90% just because very week app.