Five Free Tools Checked · July 2026

Best Free WiFi Heatmap Software in 2026

Free WiFi heatmap apps range from unrestricted Android tools to short desktop trials. We compared survey modes, floor-plan support, exports, platform limits, plus upgrade costs.

By Nruns Journal Editorial Team Published · Updated
Download NetSpot Free Compare All 5
⚡ TL;DR · Quick Answer

NetSpot is the best overall WiFi heatmap option if you want a polished survey workflow across desktop or mobile devices. Its full heatmapping access is not permanently free on every platform, so Android users who need unlimited $0 surveys should also look at NetLens.

★ Best Overall
1

NetSpot

9.0/10

Best for: Home users who want one familiar survey workflow across laptops, phones, or tablets

  • Runs on Windows, macOS, Android, plus iOS
  • Guided floor-plan calibration suits first-time surveyors
  • Supports measured heatmaps plus predictive planning
  • Higher editions include more than 20 visualizations
Visit Site →
2

NetLens

8.7/10

Best for: Android owners who want unlimited surveys without importing a floor plan first

  • All survey features work for free
  • No account or cloud storage is required
  • Offers AR walking, quick scan, plus floor-plan modes
  • Exports PDF, PNG, plus raw CSV data
Visit Site →
3

Hamina Network Planner

8.4/10

Best for: Network students or small teams modeling access-point placement before buying hardware

  • Free browser account includes predictive downlink heatmaps
  • No desktop installation is needed
  • Useful before access points are purchased or mounted
  • Supports modern WiFi planning concepts
Visit Site →

Best Free WiFi Heatmap Software Compared

The five tools below are compared by survey type, floor-plan support, free or entry-level cost, plus overall score. Scores reflect our editorial assessment of usability, platform reach, free-tier restrictions, plus practical output rather than a laboratory benchmark.

Tool Survey Type Floor Plans Price Score
1. NetSpot PICK Measured + predictive ● Yes $0 trial 9.0/10
2. NetLens AR + measured ● Yes Free 8.7/10
3. Hamina Network Planner Predictive ● Yes Free 8.4/10
4. WiFi Heatmap Measured + GPS ● Yes Free 7.9/10
5. Wifi Mapper Measured ● Yes Free 7.7/10

The 5 Best Free WiFi Heatmap Tools, Reviewed

01

NetSpot

Windows, macOS, Android, iOS / Etwok

9.0/10

NetSpot offered the most complete route from a quick signal check to a proper floor-plan survey. Its guided workflow covers map import, scale calibration, measurement density, access-point selection, plus color-coded analysis. The current desktop release provides 20+ heatmap types in higher editions, while the basic download remains useful for inspecting nearby networks.

There is one catch behind the “free” label. Desktop heatmapping is available through a 7-day PRO trial, while mobile Survey or Planning modes may require NetSpot Plus. Still, the trial gives homeowners enough time to map a house, move a router, then repeat the survey. Windows, macOS, Android, plus iOS support also makes NetSpot less restrictive than the mostly mobile-only alternatives.

Best forHome users who want one familiar survey workflow across laptops, phones, or tablets

Standout featureCross-platform projects combine measured surveys with predictive WiFi planning
NetSpot Pros
  • Runs on Windows, macOS, Android, plus iOS
  • Guided floor-plan calibration suits first-time surveyors
  • Supports measured heatmaps plus predictive planning
  • Higher editions include more than 20 visualizations
  • No proprietary survey adapter is required for basic use
NetSpot Cons
  • Free desktop access to full heatmapping is time-limited
  • Mobile heatmap modes may require a one-time upgrade
  • Commercial projects need a paid license
Free $0 Inspector tools plus basic network analysis; heatmap access varies by platform
PRO Trial $0 Full-featured desktop trial for 7 days
Download NetSpot
02

NetLens

Android / DopamineFixx

8.7/10

NetLens takes a less tedious approach than tap-by-tap floor-plan tools. On a compatible Android phone, its walking survey uses ARCore motion tracking to place WiFi readings while the user moves. A conventional floor-plan mode remains available for phones without ARCore.

The free edition includes unlimited captures, AP or band filters, multi-floor projects, plus PDF, PNG, or CSV export. Ads appear on browsing screens, while exported images carry a small watermark. Those compromises are mild compared with free apps that cap projects or lock export completely.

Best forAndroid owners who want unlimited surveys without importing a floor plan first

Standout featureARCore tracking builds a live heatmap by following the path walked through a room
NetLens Pros
  • All survey features work for free
  • No account or cloud storage is required
  • Offers AR walking, quick scan, plus floor-plan modes
  • Exports PDF, PNG, plus raw CSV data
  • Supports 2.4, 5, plus 6 GHz band filtering
NetLens Cons
  • Available only on Android
  • AR walking mode needs an ARCore-compatible phone
  • Free image exports include a watermark
Free $0 Unlimited surveys plus all export formats; includes ads plus watermarked images
Get NetLens
03

Hamina Network Planner

Web / Hamina Wireless

8.4/10

Hamina is the strongest pick here for answering “Where should the access points go?” before installation. The free account supports downlink heatmaps plus basic network modeling in a browser. That differs from NetSpot or NetLens, which are better suited to recording what a deployed network actually does.

The interface accommodates walls, access-point placement, plus performance estimates. The free plan is useful for learning or testing a compact design, though it excludes onsite validation. Paid Planner access costs $980 per user each year, so Hamina becomes expensive once a project outgrows the free limits.

Best forNetwork students or small teams modeling access-point placement before buying hardware

Standout featureBrowser-based downlink heatmaps model planned coverage without a physical walkthrough
Hamina Network Planner Pros
  • Free browser account includes predictive downlink heatmaps
  • No desktop installation is needed
  • Useful before access points are purchased or mounted
  • Supports modern WiFi planning concepts
  • Clear upgrade path for larger building models
Hamina Network Planner Cons
  • Free account does not include onsite survey validation
  • Less useful for measuring a live home network
  • Paid Planner tier is costly for casual use
Free Account $0 Basic predictive planning with downlink heatmaps
Planner $980/yr Per user; expanded WiFi design, analysis, plus reporting
Open Hamina
04

WiFi Heatmap

Android / Wi-Fi Solutions

7.9/10

WiFi Heatmap covers more measurements than its plain interface suggests. Users can import a floor plan, photograph a paper sketch, or create a simple layout inside the app. It maps signal coverage, connection speed, gateway response, interfering networks, plus access-point transitions.

Its outdoor GPS mode is the differentiator. Survey points can be exported as KML or CSV, which is handy for checking coverage around a property. The free release includes ads plus in-app purchases, while some users may run into a free-project data-point cap.

Best forAndroid users mapping a yard, campground, detached garage, or other GPS-friendly area

Standout featureOutdoor capture can export GPS-tagged survey data to KML or CSV
WiFi Heatmap Pros
  • Supports imported plans plus a basic plan constructor
  • Maps signal, speed, interference, plus network response
  • Includes an outdoor GPS capture mode
  • Exports outdoor data in KML or CSV format
  • Works with standard Android hardware
WiFi Heatmap Cons
  • Interface feels busier than newer alternatives
  • Free use may limit the number of survey points
  • Ads can distract during setup
Free $0 Ad-supported app with in-app upgrades plus possible project limits
Visit WiFi Heatmap
05

Wifi Mapper

iPhone, iPad / Oliver Vogt

7.7/10

Wifi Mapper fills a gap left by the many Android-only heatmap utilities. It records RSSI, latency, download speed, plus upload speed, then places those results over an imported floor plan. Optional local UniFi integration can retrieve RSSI information without requiring a Ubiquiti cloud login.

The free tier allows up to 20 measurement points before the Pro prompt appears. Pro costs $3.99 once, unlocking unlimited projects, unlimited points, PDF or CSV export, plus measurement history. It is less sophisticated than NetSpot, though the tiny one-time price makes sense for a quick apartment survey.

Best foriPhone or iPad users who need a small local survey app without a subscription

Standout featureA $3.99 lifetime unlock removes project limits while keeping survey data on-device
Wifi Mapper Pros
  • Built specifically for iPhone plus iPad
  • Survey information stays on the device
  • Measures RSSI, latency, download, plus upload performance
  • Imports floor plans for manual point placement
  • Pro upgrade costs only $3.99 once
Wifi Mapper Cons
  • Free tier stops at 20 measurement points
  • Requires iOS or iPadOS 17 or later
  • Smaller feature set than desktop survey suites
Free $0 Up to 20 measurement points with limited projects or export
Pro $3.99 One-time purchase for unlimited points, projects, export, plus history
Try Wifi Mapper

How We Evaluated the Best Free WiFi Heatmap Software for 2026

We checked each tool's current platform support, floor-plan workflow, survey method, export options, free-tier limits, plus verified entry price as of July 24, 2026. Greater weight went to apps that can produce a useful map without proprietary survey hardware or an immediate subscription.

This list mixes measured surveys with predictive planners, so scores reflect fitness for home troubleshooting rather than enterprise certification. We also marked trials, ads, point caps, watermarks, plus paid heatmap modes instead of treating every free download as a fully free survey package.

How to Choose Free WiFi Heatmap Software for Your Home or Office

Start with the question you need the map to answer. Use a measured survey to locate dead zones in an existing network. Pick a predictive planner if you are deciding how many access points to buy or where new units should be mounted.

Platform choice matters more than it first appears. Android gives apps broader access to nearby WiFi scan information, while iOS tools may rely on the connected network, speed tests, or vendor integrations. For a large property, also check measurement caps plus export restrictions before collecting dozens of points.

Common WiFi Heatmap Survey Mistakes That Distort Results

A beautiful color map can still be wrong if the floor plan has the wrong scale or the survey points are clustered in doorways. Calibrate the drawing, hold the phone or laptop at a consistent height, then collect points in a loose grid that reaches corners, hallways, plus rooms behind dense walls.

Do not judge a network from RSSI alone. A room can show a strong signal yet perform poorly because of interference, congestion, backhaul trouble, or high latency. Where possible, compare signal strength with throughput plus ping results, then repeat the survey at a busy time of day.

Which Free WiFi Heatmap Tool Should You Use?

NetSpot ranks first because its guided surveys, broad device support, plus deeper visual analysis leave more room to grow than the smaller free apps. The free access has limits, though, so choose NetLens for unrestricted Android capture or Hamina for planning a network that has not been installed yet. Wifi Mapper is the inexpensive iOS fallback, while WiFi Heatmap works well for outdoor GPS surveys.
Top pick NetSpot
Map the same weak room before plus after moving your router, keeping the device height, floor-plan scale, plus measurement positions consistent.

Free WiFi Heatmap Software Questions

What is the best free WiFi heatmap software for small offices in 2026?
NetSpot is usually the easiest free option for small offices because it lets you map signal strength without a steep learning curve. If you want a quick visual of dead zones before upgrading to paid features, it is a strong place to start.
How do I make a WiFi heatmap for free?
Install a tool that supports passive or active surveying, then walk the space with a laptop or tablet while the app records signal data. After that, import or draw your floor plan, place a few reference points, then run the survey to generate the heatmap.
Which free WiFi heatmap software works best on Windows?
NetSpot, Ekahau's trial options, and some open-source survey tools are common choices on Windows. If you want the broadest free workflow, pick one that can scan networks, draw coverage, then export a readable map without forcing a full paid plan right away.
Is there any truly free WiFi heatmap software with no time limit?
Yes, but most no-cost tools limit either advanced reports, map size, or survey depth. Open-source options can be fully free, yet they often require more manual setup than polished commercial apps.
Can I use free WiFi heatmap software on a Mac in 2026?
Yes, several tools still support macOS, but free features tend to be narrower than on Windows. If you work on a Mac, check whether the app supports your WiFi adapter, since that matters just as much as the software itself.
What is the easiest free alternative to Ekahau for home WiFi mapping?
For home use, NetSpot free mode is often simpler to learn than enterprise tools. It is enough for finding weak rooms, checking router placement, then deciding whether you need mesh nodes or a different access point.
Do free WiFi heatmap tools show channel interference too?
Some do, but that feature is often limited in free tiers. If your main issue is crowded channels, look for a scanner that shows neighboring access points, then compare that data with your heatmap.
Can I create a WiFi heatmap from my phone for free?
A few mobile apps can collect basic survey data, but phone-based mapping is usually less accurate than a laptop with a supported adapter. For casual home troubleshooting, it can still be useful if you only need a rough coverage picture.
What should I look for in free WiFi heatmap software before downloading it?
Check whether it supports your operating system, imports floor plans easily, then exports a clean report. You should also confirm that the free tier includes enough survey points for the size of your space.
Is open-source WiFi heatmap software better than freemium software?
Open-source tools can be great if you want full control, but they usually take more effort to set up. Freemium tools are better if you want faster results with less tweaking, especially for one-time troubleshooting.
Why does my free WiFi heatmap look wrong or patchy?
That usually happens when survey points are too far apart, the floor plan is not scaled correctly, or the adapter has inconsistent readings. Re-run the survey with smaller walking intervals, then make sure the map scale matches the real room size.
Can free WiFi heatmap software help with mesh WiFi placement?
Yes, it is one of the best uses for it. A heatmap can show where the signal drops between rooms, which helps you place mesh nodes in spots that actually bridge coverage gaps instead of guessing.
What is the best free WiFi heatmap software for apartment troubleshooting?
For apartments, a simple tool with fast scanning and an easy floor plan editor is usually enough. You mostly need to see wall loss, neighbor interference, then find the best router location without paying for advanced enterprise reports.
Does free WiFi heatmap software support 2.4 GHz and 5 GHz separately?
Many tools can separate bands, but the free tier may not show every advanced metric. If your router has dual band or tri band WiFi, make sure the app lets you test each band on its own so the results are actually useful.
Can I export WiFi heatmaps from free software to PDF or image files?
Sometimes yes, though export limits are common in free plans. If reporting matters, verify the export options before you invest time in a survey, since some apps only let you save screenshots unless you upgrade.
What hardware do I need for free WiFi heatmap software to work well?
A laptop with a decent WiFi adapter is usually enough for basic surveys. For better accuracy, use an adapter known to work with the tool, since built-in cards can miss details or lock you out of certain scan modes.
Are free WiFi heatmap tools safe to use on a company network?
They can be, as long as you use approved software from a trusted source then follow your IT policy. Avoid tools that ask for unnecessary permissions, then run a small test first before surveying sensitive areas.
Which free WiFi heatmap software is best if I only need one quick survey?
Pick the tool with the shortest setup time, even if its free tier is limited. For a one-off survey, speed matters more than deep analytics, so a simple app that imports a floor plan then generates a clear map is usually enough.
Download NetSpot Free Start · #1 Pick