For amateur radio operators
The ham radio logbook for iPhone that keeps up with the pileup.
Log every QSO in seconds, always in UTC, and send it to QRZ, LoTW or POTA when you are done. No account, no subscription, and it works with no signal.
Free · Pro is a one-time $9.99
Everything a logbook needs, free
Log a contact in seconds
Type the callsign and tap Log Contact. The form stays open for the next call, with frequency and mode carried over.
Always in UTC
A live UTC clock while you log, and every export written in UTC, the time QRZ, LoTW and POTA expect.
Band and reports fill themselves in
The band comes from the frequency. Reports start at 59, 599 or −10 dB depending on the mode.
Dupe warning
Worked the same station on the same band and mode today? You are told before you log it twice.
Parks on the Air
Start an activation, watch the count to ten, and export a file named and formatted for the POTA upload page.
ADIF in and out
Export ADIF or CSV, and import ADIF from QRZ, LoTW, Log4OM, HAMRS, PoLo and most other loggers.
Callsign lookup
Name, QTH and grid square fill in as you type a US or Canadian callsign. Logging works without a connection.
Stats that mean something
Contacts, bands and modes worked, a twelve-week activity map and the stations you work most.
LogMaster Pro
One purchase, yours for good and shared with your family. No subscription.
iCloud Sync
Your logbook on every iPhone, iPad and Mac signed in to your Apple Account, and safe if you lose a phone.
One-tap QRZ upload
Send new contacts to your QRZ Logbook with your own API key. Contacts already uploaded are never sent twice.
Station profiles
Home, portable and club calls, each with its own grid and power. Switch in one tap before an activation.
Questions
Is LogMaster free?+
Yes. Logging, export, import, POTA activations, callsign lookup and stats are free. LogMaster Pro is a one-time purchase that adds iCloud sync, QRZ upload and station profiles. There is no subscription.
Does LogMaster log in UTC?+
Yes. Every contact is stored as an exact moment in time and shown and exported in UTC, so your log matches the stations you work and the services you upload to.
Can I upload my log to QRZ, LoTW or POTA?+
Export your log as ADIF and upload it to QRZ, POTA or Club Log, or sign it with TQSL for LoTW. With LogMaster Pro you can also send contacts straight to your QRZ Logbook with your own API key, which needs a QRZ subscription that includes Logbook API access.
Can I bring my existing log?+
Yes. Import any ADIF file from another logger. Contacts already in your logbook are skipped, so importing twice does not create duplicates.
Does it work without internet?+
Logging, export and stats all work offline, which matters in a park or on a summit. Only the callsign lookup and QRZ upload need a connection.
Where is my data stored?+
On your iPhone. If you turn on iCloud Sync, it is also kept in your own private iCloud. LogMaster has no account and no server of its own. The privacy policy has the details.
Something else? Contact support, or read the privacy policy and terms.