We have also provided 'Engine Server Game' mode (Subscription is required for these games). In this mode, you can play games gainst our "Go Server Engine" which is installed on our computer server. Therefore you can enjoy online games against a very strong computer program.
The subscription costs $2.63 per month. The description also lists a slew of the bot's achievements in 2013, including beating Ishida Yoshio in a 4 stone handicap game on 20 March 2013.
I think this could be an exciting option and I will probably subscribe in a month or two when I have more time for serious games. Has anyone subscribed to test the strength of the engine yet?
Edit- Should have mentioned that this is Android as seen on Google Play