Upgrade to pro version is per account – Kids Animal Piano Review

Most apps in the app store if you pay for the full version it's per Apple account meaning you can load the paid version on all of your devices once you purchase it. This app however you have to pay for the professional version separately on all of your devices if you want it. Rip off in my opinion other than that I would've given it five stars.
Review by ck40711 on Kids Animal Piano.