Happy to be one of your testers — I'll commit to the full 14 days with real usage, not a quick install. I've built PeerPlay, a free reciprocal testing exchange, after going through this exact requirement myself — might be worth a look if you're still short after this post. Send the opt-in link whenever you're ready.
https://play.google.com/store/apps/details?id=com.testerhub.app