HamSat

HamSat is the satellite tracker built for amateur radio operators — with an Apple Watch companion on your wrist and, new in 2.1, a sked planner that finds the passes you and another operator can work together.

NEW — SKED PLANNER (Pro)

• Plan a contact, not just a pass: enter another operator's grid square and find every window where a satellite sees you both

• Set a minimum elevation for each end of the link — a window only counts if it's workable at both stations

• One tap adds the sked to your calendar with the overlap times, a 10-minute reminder, and the radio setup

PLAN AHEAD

• Pass predictions up to 7 days out

• Add any pass to Apple Calendar — times, reminder, and frequencies in the notes. HamSat never reads your calendar.

• Choose your pass-alert tone — including a CW "HI" in Morse

APPLE WATCH (Pro)

• Your next favorite pass on your wrist: live azimuth, elevation, Doppler-corrected frequencies, and a countdown to AOS

• Guided wrist-aim — follow an arrow straight to the satellite and feel a haptic tap the instant you're locked on. Aim your antenna without looking at a screen, hands free for the radio.

• Propagated on the watch itself, so it keeps tracking even when your phone is out of range

PASS TRACKING

• Live sky dome with the satellite's arc and a glyph riding it in real time

• Fullscreen Live tracker — big AZ/EL, Doppler-corrected frequencies, landscape split-pane

• Aim mode uses your phone's compass to show where you're pointing — no forced figure-8 calibration, just point and go

• Apple Maps ground track with horizon footprint

OPERATING DURING A PASS

• Doppler-corrected RX (and TX for SSB/linear) dial frequencies, updated every second

• 10-minute and AOS notifications that deep-link straight to the pass

• Live Activity + Dynamic Island on the lock screen, elevation and azimuth ticking live

• Bell badge on any pass you've set an alert for

ROVER PROOF PHOTOS

• Stamp a photo at your site with your callsign, grid, satellite, and UTC time — proof of where you were on the air

• Fresh photo or one from your library; share to X, Messages, AirDrop — or submit for the AMSAT Rover Award

ALWAYS OVERHEAD (free)

• Lists any geostationary satellite in your sky — QO-100 (Es'hail 2) for Europe, Africa, and the Middle East

• "Find it in the sky" — point your phone and check your line-of-sight to the bird is clear

• No Pro required for geostationary satellites

SATELLITE CATALOG

• Friendly designations everywhere — SO-50, AO-91, RS-44, JO-97 — with launch names as subtitles

• Search by name or NORAD ID

• Curated radio data for the most-worked birds, plus live SatNOGS for the long tail — kept fresh by HamSat's catalog service

• Filter by mode (FM, linear, beacon, data, telemetry)

ACCURATE & OFFLINE

• Full SGP4 propagation on-device — the model the pros use, so times and positions match apps like ISS Detector

• Works completely offline — every pass, sky dome, ground track, and Doppler computed locally. No API keys, no rate limits.

• Always-fresh orbital data via HamSat's catalog service, with direct CelesTrak/AMSAT fallback — or pin a source

• Settings shows how fresh your orbital data is

PRIVACY-FIRST

• Your location stays on-device — nothing about you is sent to any server

• Orbital data from public sources (CelesTrak, AMSAT, SatNOGS)

• No accounts, no tracking, no ads

HamSat Pro — the field operator's toolkit

• Sked planner — mutual passes with any partner grid

• Apple Watch tracking & guided wrist-aim

• Fullscreen Live tracker with second-by-second Doppler (landscape split-pane)

• Live in-pass Doppler — corrected RX/TX at AOS, max, and LOS

• Overhead-now live tracker for your favorites

• Unlimited scheduled alerts — not just three

• Shareable Rover proof photos

One-time purchase, no subscription.

73 — and good DX!