Well, having just been charged 3RMB by OFO for a bike with a missing chain -- did they raise their rates or do they charge extra for broken bikes? -- and having read various reports about their financial difficulties, I decided it was time to request a deposit refund.
Just like Uber/Didi, the bike sharing market started out with 10 companies, and is now down to 2. The 2 will become 1, and then grow to 3 (e.g. Meituan and Ctrip will join the party).
Returning to the apps discussion, I am surprised that nobody has mentioned tt yet.