Ranking updated
Best WiFi heatmap apps in 2026
For an Android site survey of Wi-Fi and mobile signal on your own floor plan, with before and after comparisons, RF Wi-Fi Mapper. For WiFi heatmaps with speed and ping tests on iPhone, iPad and Android, NetSpot. For scanning rooms with LiDAR and mapping coverage onto them on iPhone, WiFi Heatmap & Speed Survey. For professional surveys with dedicated measurement hardware, Hamina Onsite. For a free scanner and speed test without a heatmap, WiFiman. Full breakdown below.
How we picked: we read each app’s own store description for how the heatmap is built, where the floor plan comes from, whether it needs extra hardware and what you can export. We do not quote prices; check them in the store for your country.
A site survey on your own floor plan, Android
RF Wi-Fi Mapper, from a developer in Kyiv, Ukraine, turns an Android phone into an indoor site survey tool. You add a floor plan from the camera or gallery, walk the building, place a crosshair over where you stand and tap to record real Wi-Fi or mobile LTE and 5G readings; a smooth heatmap interpolated from your points shows strong and dead zones, green for excellent and red for dead. You can keep several surveys per plan, before and after moving a router or adding an access point, and the app compares how coverage changed, with dimmed reference points to re-measure the same spots. It also lists every network in range with band, channel and security, draws how busy each channel is, and recommends a channel to move to or says plainly that none is worth it. Heatmaps on screen are free; PDF reports with pass or fail against a signal threshold are part of Pro. Everything stays on the device, with no account and no ads.
Heatmaps with speed tests on iPhone and Android
NetSpot builds color-coded interactive WiFi heatmaps on iPhone and iPad without extra hardware, and is on Google Play too. You organise survey projects into zones and snapshots for each area, choose the colour gradient, and run a one-tap WiFi speed test and ping tests to check latency and track performance over time, alongside device discovery. WiFi Heatmap & Speed Survey starts from the room itself: on an iPhone with LiDAR it scans room after room, detects when you walk through a doorway and merges the rooms into one floor plan, or you upload your own. You tap your location to record signal readings, the app builds a smooth heatmap from green to red, you run speed tests at key spots and export a PDF report.
Professional surveys and a free scanner
Hamina Onsite is for professional site surveys: it needs a Hamina Onsite subscription and a Hamina Clip or Oscium Nomad Wi-Fi measurement device, and offers point, continuous and line survey modes with field notes on the map; results sync to the cloud for analysis in the Hamina Network Planner web app and can be shared with colleagues. WiFiman from Ubiquiti draws no heatmap, but describes itself as free to use and ad-free: it detects nearby Wi-Fi networks, scans your subnet for devices, runs download and upload speed tests you can store and compare, and helps you move access points to less congested channels.
| App | Floor plan | Heatmap | Extra hardware |
|---|---|---|---|
| RF Wi-Fi MapperCensuusGoogle Play | photo from your camera or gallery | Wi-Fi or LTE/5G, before and after comparison | no |
| NetSpotApp StoreGoogle Play | your own map, organised into zones | Wi-Fi, with speed and ping tests | no |
| WiFi Heatmap & Speed SurveyApp Store | LiDAR room scan or your own plan | Wi-Fi, with speed tests | no |
| Hamina OnsiteApp Store | project from Hamina’s web planner or on the device | Wi-Fi site survey | Hamina Clip or Oscium Nomad |
| WiFimanApp StoreGoogle Play | none | no heatmap: scanner and speed test | no |
Frequently asked questions
Is there a free WiFi heatmap app?
RF Wi-Fi Mapper shows heatmaps on screen for free on Android, with PDF reports in Pro. WiFiman is free and ad-free, but it scans networks and tests speed rather than drawing a heatmap.
Which WiFi heatmap app works on iPhone?
NetSpot builds WiFi heatmaps on iPhone and iPad without extra hardware, and WiFi Heatmap & Speed Survey can scan rooms with LiDAR and map coverage onto them. Hamina Onsite works on iOS with a Hamina Clip or Oscium Nomad measurement device.
How do I check WiFi coverage before and after moving a router?
RF Wi-Fi Mapper keeps several surveys per floor plan and compares how coverage changed between them, with reference points to re-measure the same spots.
Can a WiFi heatmap app also map mobile signal?
RF Wi-Fi Mapper surveys either Wi-Fi or mobile LTE and 5G signal on the same floor plan; you pick the layer when you start a survey.