I used Donkey Republic in Munich and rather liked it; the bluetooth lock functionality was pretty cool. I used another vendor in Vienna but the experience was

I used Donkey Republic in Munich and rather liked it; the bluetooth lock functionality was pretty cool. I used another vendor in Vienna but the experience was very 3rd world. The location of the bikes was only approximate (the first 2 locations I looked had no evidence of any bikes; thankfully the 3rd location had 2 bikes). They weren't maintained, and the app just gave you a code to a cable lock which means I could lock it after ending my ride, then someone else could come along, use the same code, and the vendor would assume I was lying about where I left it. Billing was handled through some sketchy place in Florida. I wish I could remember the name.