This is pretty cool. Does a lot of little things right that make it a real experience vs just interactive fiction. The fact that I could pace around on the train station with the phone in one hand made it feel about 10x more authentic. The control scheme is set up well for it too.
Story's nice and pretty tight, of course -- my only gripe I guess would be the Unknown character, but I guess if the protagonist can talk to his ex he can also talk to some great omniscient unknown too haha