Flutter GPS Tracking Demo | $50 deducted from Phase 1 budget, stable GPS on Chinese OPPO under background/lock screen/power save (no kill), 2-day full Flutter source code, proven AMap & NetEase/Tencent IM SDK experience

We are building a sports and chatting app focused on online connecting users with workout partners (hiking, running, etc.). After Demo test passed, i will offer UI/UX design for you to start formal development... (Budget: $3000 - $5000 USD, Jobs: Android, Backend Development, Flutter, iOS Development, Mobile App Development, Mobile App Testing, PHP)