This game is in the family with League of Evil and N+, both of which are stellar games with tight controls. IP comes close, but fails in the most critical category: controls. First of all, there should be button customizations available. The ability to move the buttons and change their size is key for a platformer on iOS, as the gamers physical features vary. Next, responsiveness is a major issue, namely the jump doesnt always work. Furthermore, wall jumping is trash because it isnt instantaneous. You have to wait a whole second before you grip the wall so you can initiate a wall jump. In a game that demands speed and agility to achieve 3-star times, this was a terrible judgment call.
I want to love this game, but without the tight controls, its just frustrating without the challenge. No point in getting frustrated for nothing. Ive cleared perfectly all of the challenging platformers Ive played. IP falls short, so it wont be shortlisted until its updated and improved.