OSHI is an encrypted messenger that keeps working when the network does not. Nearby phones relay for each other over Bluetooth mesh and LoRa, so a conversation keeps moving in airplane mode, underground, or during an outage. No phone number, no account, no SIM. One-to-one chats are end-to-end encrypted with a Double Ratchet, and you can verify any contact with a safety number. Offline maps, steganography, and an on-device AI that never sends a word off your phone. Free and open source, MIT.
Most run trackers hand you a time. Waypath tells you what it was worth. Grade-adjusted pace uses the published Minetti cost-of-running curve, so a 5:52 kilometre up a 5% grade reads as the 4:30 effort it really was. Every split is graded flat-equivalent, beside pace zones, elevation, power and heart rate. Race predictions from 5K to marathon come from the fastest efforts inside your real runs, each with its own confidence. Where a number is modelled rather than measured, it says so. 70 sports.
