# SDRPulse Privacy Policy

*Last updated: 3 October 2026*

This policy explains what the SDRPulse Desktop app for Windows does with data. Questions:
**contact@sdrpulse.cc**. (The sdrpulse.cc website and the Android app will have their own sections when they are released.)

## In short

- SDRPulse has **no account, no advertising, no analytics and no telemetry**. We do not collect, receive or sell any of
  your data.
- Radio audio, recordings, transcripts and translations are processed **on your computer** and never uploaded by
  SDRPulse. Speech recognition (Whisper) and translation (M2M100) run locally.
- Some optional features fetch public data from other services over the Internet. Those services see your IP address
  and the request, as described below. Setting **Data mode** to **Offline only** (Settings) turns them off.

## Data kept on your computer

SDRPulse stores the following only on your computer, in your Windows user folders
(`%APPDATA%\SDRPulse`, `%LOCALAPPDATA%\SDRPulse` and `Documents\SDRPulse`):

- Settings, including the antenna location if you enter one, favourites, scan ranges and blocked or muted channels.
- The Library: recordings, transcripts, translations and scanner history.
- Downloaded data: AI models, map tiles, the aircraft database and satellite data.
- A diagnostic log, only if you switch it on in Settings > About. It records receiver and app events, not audio or
  personal content, and is deleted after 7 days.

**Recordings** are encrypted and can only be played in SDRPulse on the computer that made them. To make a copied
recording traceable, each recording contains an identifier of the recording computer (derived from Windows'
machine ID), the computer's network adapter (MAC) address and an inaudible watermark in the audio. SDRPulse never
sends these anywhere. They stay inside the recording file, so if you give a recording file to someone, that
information goes with it.

You can delete any of this data at any time: in the app (Library), or by deleting the folders above.
Uninstalling SDRPulse does not delete your recordings in `Documents\SDRPulse`.

## Online features (optional)

Unless Data mode is set to Offline only, SDRPulse may contact these services. Each one receives your IP
address and the request below, and handles it under its own privacy policy:

| Service | When | What is sent |
| --- | --- | --- |
| api.adsbdb.com | You view an aircraft on the ADS-B page | The aircraft's ICAO address and callsign (to show its route) |
| api.planespotters.net | You view an aircraft | The aircraft's ICAO address or registration (to show a photo) |
| EOX (tiles.maps.eox.at), NASA GIBS | You download or view the satellite map | Map tile coordinates |
| CelesTrak, SatNOGS DB | Satellite data is updated | A request for public orbit and transmitter data |
| Hugging Face, GitHub | You download an AI model, the aircraft database, airline names or the Zadig driver tool | A request for that file |

Links such as Flightradar24, ADS-B Exchange, MarineTraffic and VesselFinder open in your web browser only when you
click them. From then on, that website's own policy applies.

Network features you set up yourself send data only to the addresses you enter: rtl_tcp (receiver over the
network) and UDP audio output.

## Your rights

SDRPulse does not collect personal data about you, so there is nothing for us to access, correct or delete on our
side. Everything SDRPulse stores is on your own computer and under your control. If you write to us by email, we
use your message and address only to answer you.

## Children

SDRPulse is not aimed at children and does not knowingly collect any data from anyone.

## Changes

If this policy changes, the new version will be published on sdrpulse.cc with a new date at the top.