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 a small office in 2026?
NetSpot is usually the easiest free option for small offices because you can survey signal strength, spot dead zones, then export a basic heatmap without paying upfront. If you need more advanced reporting, you will likely outgrow the free tier fast.
How do I make a WiFi heatmap without buying extra hardware?
Use a laptop or compatible tablet with the heatmap app installed, then walk the space while taking measurements at a grid of points. Most free tools rely on your device’s built-in WiFi adapter, so you can start with what you already have.
Which free WiFi heatmap tool is best for beginners?
NetSpot and Ekahau HeatMapper are the most beginner-friendly because the setup is straightforward. NetSpot gives you a more modern workflow, while HeatMapper is simple if you only want a quick coverage snapshot.
Can free WiFi heatmap software show both 2.4 GHz and 5 GHz coverage?
Yes, many tools can map each band separately if your adapter sees both networks. That matters because a room can look fine on 2.4 GHz while 5 GHz drops off sharply through walls.
What is the main limitation of free WiFi heatmap software?
The biggest limit is usually export, project size, or advanced analysis features. Free plans are great for basic coverage checks, but larger networks often need paid tools for multi-floor maps, roaming analysis, or client-ready reports.
How accurate are WiFi heatmaps made with free tools?
They are good enough for finding weak spots, overlap problems, then channel issues, but they are not lab-grade measurements. Accuracy depends on how carefully you take readings, where you stand, then whether your adapter reports stable signal data.
Can I use free WiFi heatmap software on Mac?
Some tools work on macOS, but support is not universal because WiFi scanning permissions can be restrictive. Before downloading, check that the app supports your Mac model, your WiFi adapter, then the version of macOS you are running.
What should I look for when comparing free WiFi heatmap tools?
Focus on map import, measurement ease, band support, then export options. If a tool cannot import your floor plan cleanly or makes you click through too many steps, it will be frustrating in real use.
Is there free WiFi heatmap software that works for enterprise sites?
Free tools can handle a single floor or a small branch office, but enterprise sites usually need more advanced features. If you are testing a large campus, start free for a quick scan, then move to a paid platform for serious planning.
Can I create a heatmap from a PDF floor plan?
Yes, several tools let you import a PDF, then trace the space before measuring. A clean floor plan saves time because your heatmap lines up better with walls, hallways, then access point locations.
What is the best free alternative to paid WiFi survey software?
NetSpot is the most common free alternative because it covers the basics without a steep learning curve. If you need only a quick diagnostic pass, it can replace a paid tool for simple troubleshooting.
How do I troubleshoot weak WiFi after running a heatmap?
First, check whether weak areas are caused by distance, walls, or poor access point placement. Then try moving the AP, adjusting transmit power, or changing channels before you spend money on extra gear.
Does free WiFi heatmap software help with channel overlap problems?
Yes, many tools show nearby networks so you can see where interference is likely. That makes it easier to decide whether to change channels, reduce congestion, or reposition an access point.
Can I use free heatmap software to plan new access point locations?
Absolutely. A good survey tool shows where signal fades, then helps you place new APs where they will fill gaps instead of creating too much overlap.
What if my laptop WiFi card does not support scanning well?
You may get incomplete readings or noisy results, especially on newer bands. In that case, use a compatible external adapter that supports active scanning so the heatmap reflects the network more reliably.
Are there free WiFi heatmap apps for Android or iPhone?
Mobile options exist, but they are usually more limited than desktop tools for full floor plan mapping. A phone is fine for quick checks, yet a laptop usually gives better control, cleaner surveys, then easier exports.
How much does a paid upgrade usually add to free WiFi heatmap software?
Paid plans usually add multi-project support, stronger reporting, then more detailed survey modes. If you only need one-off troubleshooting, the free version may be enough, but consultants often need the upgrade fast.
What is the safest way to choose a free WiFi heatmap tool in 2026?
Download one tool, test it on a real floor plan, then see whether it captures data quickly without confusing menus. The right choice is the one that makes your survey simple, then gives you a map you can actually act on.
Download NetSpot Free Start · #1 Pick