As I downloaded the app while walking to the nearest port (pickup location) I was skeptical it would even work. I took a chance and entered my credit card info as I approached a line of 5-6 bicycles next to the Asakusa View hotel in Tokyo. To my surprise everything worked beautifully. The app's English is good enough to easily follow the instructions. I chose a 48 hour rental for $36, the app unlocked the bicycle, and I was off cruising in 5 minutes! With electric motor assist too. Great for going up the long suspension bridges in South Tokyo.