Platforms
The same app behaves differently on Android, Windows and the web — check before you start.
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Capability matrix#
| Capability | Android | Windows |
|---|---|---|
| APRS-IS send/receive | ✓ | ✓ |
| Continuous background positioning (foreground service) | ✓ | — (no such concept on desktop) |
| Bluetooth TNC | ✓ (Bluetooth permission) | — (use a USB serial COM port) |
| USB serial (OTG) | ✓ | ✓ (COM ports are exclusive — keep other software off them) |
| Audio AFSK | ✓ (mic permission; TX maxes volume and mutes the mic) | ✓ |
| Offline map download | ✓ | ✓ |
| Home-screen widgets | ✓ (three of them) | — (Android only) |
| WAV file mode | available everywhere: decode a recording offline, or export packets as audio | |
Web build trade-offs#
⚠️
The web build is the lightweight “view and connect” shape:
- no offline map download (browsers have no stable writable directory);
- backup runs through the clipboard (copy / paste), no files;
- realtime audio warns where unsupported while WAV mode still works (upload a recording, decode offline);
- no home-screen widgets, no continuous background positioning.