Your logbook works where the signal doesn't.
Bandlog is an amateur radio contact logbook built for the places you actually operate — a park bench, a summit, Field Day, a basement shack. No connection required, ever. Log the QSO, and your award progress counts itself.
What's inside
A real logbook, not a notes app with a callsign field
Everything below runs on your phone, from your own log. Nothing is uploaded, nothing is verified against a server, and none of it needs a signal.
Log a QSO in seconds
Callsign, UTC time, band, mode, frequency, RST, grid and power — with band and mode carried over from your last contact.
Band from frequency
Type 14.285 and the band fills in. Pick 20m and a frequency appears. Reports default to the mode — 59 for phone, 599 for CW.
Activations that group your day
POTA, SOTA, Field Day, contests. Every contact from an outing lives under one reference, with its own notes and location.
Dupe checking as you type
Worked them already on this band and mode? Bandlog says so before you call — within the activation, or the last 24 hours.
Where your contacts come from
Contacts per day over 7 or 30 days, by band, by mode, and by UTC hour — so you can see when the bands actually open for you.
Awards count themselves
Worked All States, DXCC entities, grid squares, band slam and mode explorer — tallied from your log, with a "still needed" list.
Streaks, goals and badges
Days on air in a row, a daily and weekly contact goal, and eleven achievements from first contact to brass pounder.
Search that reaches everything
Callsign, entity, grid, name, QTH, frequency, note or tag. Filter by band, mode or tag, sort four ways, pin the contacts that matter.
Archive, bulk edit, undo
Long-press to select. Tag, archive or delete in one go — and every destructive action gets an undo before it's gone.
ADIF, CSV and full backup
Export ADIF for clubs and award programmes, CSV for a spreadsheet, or a complete JSON backup you can restore. Your log, your file.
Built for the shack you have
Light or dark, four accent colours, and three layout densities — from contest-tight rows to gloves-on touch targets.
Encrypted on device
Your log lives in an AES-256 encrypted database, with the key in Android's secure storage. No account, no analytics, no ads.
How it works
Three taps from "you're 59" to logged
No sign-up, no sync setup, no waiting for a lookup service that isn't there.
Open an activation
Name the park, summit or contest once. Every contact you log drops into it automatically, with dupe checking scoped to that outing.
Log the contact
Type the callsign. Band, mode, frequency and reports are already filled from your last QSO — correct what changed and save.
Export when you're home
Send an ADIF to your club or award checker, a CSV to a spreadsheet, or keep a JSON backup. Nothing was ever uploaded on your behalf.
Get Bandlog
Free. No ads, no subscription, no account.
Bandlog is free to use, collects nothing, and never asks you to sign in.
GET IT ONGoogle Play