Cross Device App QA Testing

I have a mobile app ready for release and need a fresh set of eyes to put it through its paces. My priority is functional testing on both Android phones and iPhones, looking at install flow, onboarding, core features, edge-case interactions, and overall stability... (Budget: $8 - $15 USD, Jobs: Android, Documentation, iOS, iPhone, Mobile App Development, Mobile App Testing, Testing / QA, Usability Testing)