First: this should be in the Android development and hacking section.
Second: I say, make a video for your store and play it on every device with Repeat: ON. You don't need an app for that. :P
But then again, every device I've had in my hand has a 'store demo' app installed. Look into that, might come in handy :3
School has started. Development is dead. :'(
Or it didn't happen.
Don't say 'Thanks', hit the button.
Sony Xperia S [nozomi] - CM10.1 RC2 + kernel755 | Modded Stock .96
Google Asus Nexus 7 [nakasi] - on RMA
Archos 101 IT Gen8 [?] - Quad-boot. Won't boot. xD