MyNarwhal

marine radio, anywhere — privacy & acknowledgements

Last updated: 17 June 2026

Privacy

MyNarwhal is a listen-only marine-radio app, built to collect as little as possible.

• No account, no sign-up, no ads, no tracking. No analytics, cookies, or third-party trackers.
• No device permissions beyond internet. The app doesn't access your location, microphone, contacts, or files. The map shows receivers and ships; it never reads your GPS.
• Stays on your device. Your settings (such as a custom relay address) are stored locally on your device and are not sent to us.
• Sent to our relay. The map area you're currently viewing (a box of latitude/longitude, so we can show ships near that view) and your audio-playback requests. This isn't tied to any identity.
• Server logs. Our network provider (Cloudflare) keeps standard technical edge logs — such as IP address and request times — for a limited period, to operate the service and prevent abuse. Our own relay is run with request logging minimised. These are not used to profile you.
• Third-party content. Audio is streamed from volunteer-run public receivers (KiwiSDR, OpenWebRX, WebSDR) operated by others — that audio is relayed through our server, so those receiver operators never see your device's IP address. Ship positions come from aisstream.io. Map tiles come from OpenStreetMap and CARTO: when the map loads, your browser contacts those tile servers directly, so they receive your IP address and the area of the map you are viewing (a rough location indicator) — this is normal for any web map. Your use of that content is also subject to those operators' terms.
• Children. The app is not directed at children and collects no personal data.
• Changes. Any updates to this statement will be posted on this page.

Questions or requests: [email protected]

Acknowledgements

MyNarwhal stands on the work of volunteer receiver operators and open data & software. Thank you:

• Receiver operators running KiwiSDR, OpenWebRX and WebSDR receivers worldwide — the audio comes from them. Please support the receivers you use.
• VHF feed — VC Brandaris (Terschelling, NL).
• Receiver directories — the public KiwiSDR list and receiverbook.de (OpenWebRX).
• Ship positions (AIS) — aisstream.io.
• Maps — map data © OpenStreetMap contributors, tiles © CARTO, rendered with Leaflet.

MyNarwhal is free and community-supported, not commercial. It is listen-only and does not transmit.

Contact

General: [email protected] · Privacy: [email protected]

Part of Chequebutt — more software at chequebutt.com.