Show HN: Brain'up – a brain training app (with promocodes)

Hello ! I would love it if you could give me feedback about my new brain training app - Brain'up. Link: https://itunes.apple.com/us/app/brainup-brain-training/id914643077?mt=8 I just created two promocodes that you can use to unlock two premium games (Memory+ and Flash) Codes: reddit, reddit2 Don't hesitate to share your feedback! Thanks :)