HollowMap
Last updated: 22 October 2026
HollowMap maps the Wi‑Fi coverage of a property. Run the app on a PC that stays put, walk the property with a phone or tablet, and HollowMap records GPS‑tagged signal samples and draws them on a map — so you can see dead spots, compare runs, place access points, and aim directional antennas.
The PC does not record. It has no GPS: it holds the survey, reads your controller, and hands the walker a 6‑digit walk code.
How it fits together
- Server + desktop app (Windows) — runs on a machine wired to your network, hosts the map/reports, and stores samples.
- Any phone or tablet, in the browser — no install. This is how you record today on Android, iPhone and iPad. A browser cannot read its own Wi‑Fi signal, so with a controller HollowMap records how the AP hears the phone, and without one it records position only. The screen has to stay awake.
- Android collector app (coming soon) — will add the phone's own Wi‑Fi signal and keep recording when the screen locks. It is not part of the Microsoft Store download.
- Controller (optional) — UniFi is the most tested. Omada is beta; several others are early access. A controller enriches each sample with the AP and signal it sees. Without one, HollowMap records position only — the walk and the track, with the AP and signal columns empty.
Start here
Still stuck? In the app, use Help → Contact support, or open a ticket here.