GPS performance meters vs phone apps
Dedicated 10 Hz GNSS performance meters are the reference. Here is what they do differently, and how a phone app can close the gap with sensor fusion.
What a dedicated meter does
Dedicated performance meters use a GNSS receiver that reports 10 or more times per second with low latency, and a good antenna. That is why they are accurate — and why they cost money and need to be carried and charged.
What a phone has
A phone's location service reports about once per second with some delay. But a phone also has a 100 Hz accelerometer and gyroscope, and a barometer.
Holeshot fuses those sensors with GPS: the accelerometer supplies the fast detail, GPS anchors the long-term truth, and the barometer measures slope. It is designed to get as close as a phone can to dedicated hardware without any extra hardware.
FAQ
Is Holeshot as accurate as a dedicated GPS box?
A 10 Hz GNSS logger remains the reference for professional data. Holeshot is far more accurate than GPS-only phone timers because of sensor fusion, and it needs nothing but your iPhone.
Holeshot: 0-60 & 0-100 Timer
Motion sensors + GPS at 100 Hz. Every split, every run, hands-free.