Review on XOSS G+ GPS Bike Computer ANT+ with Smart Cadence Sensor and Bluetooth Connectivity - Wireless Bicycle Speedometer Odometer, Waterproof MTB Tracker for All Bikes (Includes XOSS Heart Rate Monitor Support) by Pushkraj Love

and it has very good GPS. Just sync with Strava. I had a Garmin Edge 520 Plus that wouldn't sync to my iPhone. I sent it back and received the XOSS G+. The only negative is the direction. Not very clear. To do this, you must use the app. Install it. To sync settings, there is a red dot on the settings page in the top left corner of the application. Touch it and it will sync.