Last updated September 2, 2026
SendPin's only function is sending a place you choose to your own Hammerhead Karoo 2 cycling computer over Bluetooth Low Energy — the same short-range radio your power meter or heart rate strap uses. When you share a place from Apple Maps, the app transmits:
That transmission happens directly between your iPhone and your Karoo, over Bluetooth, to a device within a few metres of you. It never leaves those two devices. SendPin has no servers to send it to even if it wanted to.
SendPin remembers the places you've sent, so you can send them again — this list is stored only on your device (in an App Group container shared between the app and its share extension) and is never transmitted anywhere except to your own Karoo, and only when you explicitly send a place. One local flag records whether you've seen the app's welcome screen.
SendPin is an independent, open-source project — not affiliated with or endorsed by Hammerhead or SRAM. Questions or concerns: leave a note, or see the source at github.com/albertjfoo/sendpin.