QSO Card Logbook

QSO Card Logbook is an offline-first amateur radio contact logbook for HF and VHF operators who record one QSO at a time after a contact. Cold start opens a fullscreen contact log: a radio-shack charcoal strip of QSO rows with monospaced callsign, UTC stamp, band and mode chips, RST sent/received, power, and compact QSL sent/received flag pills. Add, edit, filter, and tally contacts entirely from typed entry—no receiver, streaming, RF hardware, special permissions, or cloud account. Quick-add and edit every field that matters at the operating position: callsign, UTC date-time, band picker (160m through 70cm common set), mode (CW, SSB, FM, FT8, RTTY, and more), RST sent, RST received, and watts. Set station profile defaults for operator callsign, default band, default mode, and default power so new QSOs open prefilled and ready. A live tallies board counts contacts per band and per mode from your local log. Toggle QSL sent and QSL received on each contact, then filter for QSL-pending rows. Search by callsign prefix and apply band, mode, and QSL multi-filters on the list. A duplicate-day hint appears when the same callsign already shows on the selected UTC date. Open any row in a QSO detail card with the full field set, a notes line, and one-tap QSL flag flips. Export filtered contacts as plain text through the system share sheet—no network API required. Seed demo QSOs (sample DX and local contacts) keep the log and tallies non-empty on first launch so you can explore immediately. Log real QSOs fast at the rig, track band/mode tallies and QSL status offline, and keep a clean station log without radios, accounts, or clutter.

Initial production release of QSO Card Logbook. Fullscreen QSO log with callsign, UTC, band, mode, RST, power, and QSL S/R flags. Quick-add and edit forms, live band and mode tallies, QSL-pending filters, and callsign search. Station defaults, duplicate-day hints, demo contacts, and plain-text export via the share sheet—all fully offline. QSO Card Logbook is an offline-first amateur radio contact logbook for HF and VHF operators who record one QSO at a time after a conta…