Happy to be one of your testers — I'll commit to the full 14 days with real usage, not just an install. Since you're clearly deep in the 12-tester grind right now: I built PeerPlay for exactly this (reciprocal testing swap between devs), might be worth a look if you need more than just me. Either way, send the link and I'll get started.
https://play.google.com/store/apps/details?id=com.testerhub.app