Ham radio log · web · Android · iOS
The whole QSO on one line.
Type what you hear, and kQSO tells the call, report, serial, locator and reference apart by their shape. No fields to tab through. On a summit, in a contest or through a satellite.
Free, no ads, no account. Your logs stay on your device.
What it's for
When you create a log you pick what you're going to do. That tells kQSO what is exchanged and how the log is exported.
Activations
SOTA, POTA, WWFF, GMA, TOTA lookout towers and BOTA bunkers. Nearby references without a signal, S2S and P2P, an ADIF per program.
Activations ›VHF contests
Serials, locators, points per km, dupe checks, the contest panel, statistics, a map, the ON4KST chat and EDI per band.
VHF contests ›Satellites
One log per pass. The satellite sets the uplink and downlink; the database knows over 5,000 satellite calls with locators.
Satellites ›Radios and CW
Icom over CI-V, CW macros and a decoder. Build the M5Stack Atom keyer from a handful of parts and control the radio and CW through it, even from an iPad.
Radios and CW ›What kQSO does
Its own keyboard
Alphabetical, with big keys that work with gloves. The system keyboard and a hardware keyboard work too, with F keys for the macros.
No signal needed
Logging, the map, statistics, the callsign database and nearby references all work offline. The network is only for Wavelog and the chat.
Nothing gets lost
Every QSO is written at once. If the phone crashes or restarts, the QSO you were typing comes back.
Callsign database
After two characters it offers calls and their locator. The VHF part knows the bands a station is usually on, and a dupe shows at once.
Map and statistics
Worked locators on a map, QSOs and points per hour, large squares, the top 10. Optionally a rain radar for rain scatter.
Export and Wavelog
ADIF for SOTA, POTA, WWFF and the others, EDI for VHF contests (a file per band), and a push to your own Wavelog.
E-ink and dark mode
A display mode for e-ink screens (tuned on the Mudita Kompakt), light and dark themes. English and Czech by the system language.
Your data
No account, no server holding your logs, no tracking. Free software under GPL-3.0, the source is on GitHub.
What it looks like






Where it runs
The same app and the same version (1.18) everywhere. Pick by your device.
Browser
Computer, tablet or phone. After the first visit it works offline. On a computer, Chrome or Edge connect a radio by cable.
Open kqso.ok1cdj.comAndroid
From Google Play, or the APK from GitHub for devices without the store (such as the Mudita Kompakt). Either updates the other.
iPhone and iPad
From the App Store. The app does the IC-705 over Bluetooth, the microphone for the CW decoder and the ON4KST chat directly.
App StoreNew to kQSO? The First steps walk through a VHF contest and a SOTA activation. The whole manual with pictures is in the app too (Settings → About).