VOACAP-grade path modelling, live PSK Reporter / WSPR / DX Cluster evidence, and an optional AI band advisor — fused into one confidence score per band, right on your wrist or your widget.
Coming soon to the App Store
Every prediction is grounded in physics and live activity, not just a model guessing in the dark.
An optional AI layer turns your station's data into a plain-English recommendation. Bring your own OpenAI or Anthropic API key — it's stored in your Keychain and never touches our servers, because we don't have any.
PSK Reporter, WSPR.live, DX Cluster spots and the Reverse Beacon Network are combined with your station's grid square to confirm which bands are actually open right now.
Great-circle path geometry, MUF from GIRO ionosonde data, and link-budget estimates using your real antenna gain and transmit power — not a generic lookup table.
Solar Flux Index, planetary Kp, A-index and GOES X-ray flux with automatic Solar Flare and SID alerts when a flare threatens the D-layer.
A watch complication and home/lock screen widgets keep your top band recommendation one glance away — synced privately through your own iCloud account.
Get notified when a band opens on your favourite path. A lightweight on-device QSO log feeds the recommendation engine — capped, pruned, and never uploaded.
Every band gets a 0–100% confidence rating, colour-coded and scoped to how relevant the evidence is to your station — from Local (within ~250 km) out to Global Context.
No developer-run server, no account, no ad or analytics SDK. Your logbook and settings stay on-device or in your own private iCloud — and AI features only run if you supply your own API key.
HF Propagation AI is launching soon on the App Store for iPhone, with companion apps for Apple Watch.