Five Free Survey Tools Checked · July 2026

Best Free WiFi Site Survey Software

Free WiFi survey tools range from proper floor-plan heatmaps to simple signal mappers. NetSpot is the strongest all-around starting point, though Android users have two compelling no-cost alternatives.

By Ebox Platform Reviews Editorial Team Published · Updated
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⚡ TL;DR · Quick answer

NetSpot is the best free WiFi site survey starting point for most homes or small offices because it pairs floor-plan projects with channel plus signal analysis. For unlimited Android surveys with every export format unlocked, NetLens is the better zero-cost choice.

★ Best overall
1

NetSpot

9.1/10

Best for: Home users or small IT teams that want floor-plan surveys without learning a dense RF toolkit

  • Available on Windows, macOS, Android, plus iOS
  • Floor-plan workflow is approachable for occasional surveys
  • Nearby-network analysis helps explain channel congestion
  • Projects can support repeat measurements after router changes
Visit Site →
2

NetLens

8.8/10

Best for: Android users who need unlimited local surveys plus export tools without creating an account

  • Unlimited surveys in the free version
  • PDF, PNG, plus CSV export included
  • No account required
  • Floor-plan mode works without ARCore
Visit Site →
3

ManageEngine WiFi Analyzer and Surveyor

8.3/10

Best for: Android users who want a heatmap beside channel interference plus signal graphs

  • Free Android site survey mode
  • Custom floor plans supported
  • Heatmap plus signal reports can be exported
  • Channel interference views add useful context
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Free WiFi Site Survey Software Compared

The five tools below are compared by whether they create true floor-plan heatmaps, which devices they support, plus the real cost of the usable free entry point. Scores reflect editorial judgment based on survey depth, restrictions, usability, plus practical fit. They are not lab accuracy ratings.

Tool Floor-Plan Heatmaps Main Platform Price Score
1. NetSpot PICK ● Yes Desktop + mobile Free 9.1/10
2. NetLens ● Yes Android Free 8.8/10
3. ManageEngine WiFi Analyzer and Surveyor ● Yes Android Free 8.3/10
4. Ubiquiti WiFiman ● Yes iOS + Android Free 7.9/10
5. Acrylic Wi-Fi Heatmaps ● Yes Windows Free trial 7.6/10

The 5 Best Free WiFi Site Survey Tools, Reviewed

01

NetSpot

Windows, macOS, Android, iOS / Etwok

9.1/10

NetSpot gave us the most complete free starting point in this group. The desktop app combines nearby-network discovery with floor-plan survey work, so you can investigate a weak room rather than merely watch its signal number change. Our review workflow covered a 12-point residential floor plan, with the project setup proving easier to follow than the more technical Windows alternatives.

The catch is platform-specific licensing. Free features differ across Windows, macOS, Android, plus iOS, while some mobile heatmap functions require NetSpot Plus. Check the edition on the device you intend to carry before mapping a large property. Even with that wrinkle, NetSpot has the best balance of usability, desktop support, survey structure, plus useful diagnostics.

Best forHome users or small IT teams that want floor-plan surveys without learning a dense RF toolkit

Standout featureOne project can combine floor-plan measurements with nearby-network analysis on desktop
NetSpot Pros
  • Available on Windows, macOS, Android, plus iOS
  • Floor-plan workflow is approachable for occasional surveys
  • Nearby-network analysis helps explain channel congestion
  • Projects can support repeat measurements after router changes
  • Free desktop download offers a practical entry point
NetSpot Cons
  • Free capabilities differ by operating system
  • Some mobile survey visualizations require an in-app purchase
  • Advanced reporting sits outside the basic free workflow
Free Edition $0 Desktop download with feature limits that vary by platform
Download NetSpot Free
02

NetLens

Android / Independent Developer

8.8/10

NetLens is the least compromised free option here. It supports imported floor plans, manual measurement points, plus camera-assisted mapping on compatible phones. During our workflow review, a new survey could be started without an account, cloud workspace, or license screen.

The app keeps unwalked areas blank instead of filling them with overly confident coverage estimates. That makes sparse surveys look less impressive, yet it also makes missing data easy to spot. The $0 tier permits unlimited captures plus all listed export formats, with ads in browsing screens plus a watermark on image or PDF exports.

Best forAndroid users who need unlimited local surveys plus export tools without creating an account

Standout featureEvery capture feature plus PDF, PNG, CSV exports remains available in the free version
NetLens Pros
  • Unlimited surveys in the free version
  • PDF, PNG, plus CSV export included
  • No account required
  • Floor-plan mode works without ARCore
  • Survey data remains on the Android device
NetLens Cons
  • Android 13 or newer is required
  • Free exports carry a watermark
  • Newer app with a smaller support footprint
Free $0 All features, unlimited captures, ads, plus watermarked visual exports
Get NetLens
03

ManageEngine WiFi Analyzer and Surveyor

Android / Zoho Corporation

8.3/10

ManageEngine packs more troubleshooting views around its survey tool than most no-cost phone apps. You can upload a floor plan, record readings at selected positions, then export either a heatmap or signal-strength report. Its channel graphs are useful when weak performance comes from congestion rather than distance.

The interface feels closer to a network utility than a polished mapping app. Still, the app completed the core floor plan → measurement points → heatmap report sequence without introducing a paid survey tier. It is a good second opinion when a coverage map looks fine but one channel remains crowded.

Best forAndroid users who want a heatmap beside channel interference plus signal graphs

Standout featureSurvey reports sit beside channel overlap, interference, plus live signal views
ManageEngine WiFi Analyzer and Surveyor Pros
  • Free Android site survey mode
  • Custom floor plans supported
  • Heatmap plus signal reports can be exported
  • Channel interference views add useful context
  • No advertising in the analyzer
ManageEngine WiFi Analyzer and Surveyor Cons
  • Android only
  • Interface feels dated in a few screens
  • Not intended for predictive access-point design
Android App $0 Free analyzer, surveyor, heatmap, plus report export
Visit ManageEngine
04

Ubiquiti WiFiman

iOS, Android / Ubiquiti

7.9/10

WiFiman is free, clean, plus especially helpful inside a UniFi setup. Its mobile Signal tab can show signal strength, throughput, latency, plus roaming behavior. On supported LiDAR-equipped devices, Floorplan Mapper records signal conditions while you move through the building.

It is less universal than NetSpot or NetLens. Several useful details depend on UniFi network hardware, while the desktop app does not include the mobile survey functions. Treat it as a focused UniFi validation tool, not a neutral survey package for comparing every visible access point.

Best forUniFi owners who want quick roaming, latency, throughput, plus connected-signal checks

Standout featureFloorplan Mapper ties coverage observations to live UniFi roaming behavior
Ubiquiti WiFiman Pros
  • Free with no advertising
  • Strong fit for existing UniFi networks
  • Tracks latency plus throughput during checks
  • Floorplan Mapper supports quick coverage visualization
  • Simple device discovery plus speed testing
Ubiquiti WiFiman Cons
  • Best features favor UniFi hardware
  • Desktop version lacks mobile signal tools
  • Not ideal for vendor-neutral multi-AP surveys
Mobile App $0 Free for iOS plus Android; some insights require compatible UniFi equipment
Open WiFiman
05

Acrylic Wi-Fi Heatmaps

Windows / Tarlogic

7.6/10

Acrylic Wi-Fi Heatmaps is not permanently free, so it belongs lower on this list. Its 15-day evaluation is still useful for a one-off technical assessment or a serious comparison before buying professional software. It supports floor plans, active or passive surveys, predictive design, multiple heatmap types, plus report generation.

The learning curve is steeper than the phone apps, partly because there is more RF detail to configure. Trial output also carries watermarks, while the evaluation license is not meant for professional or commercial work. Use it to test a demanding Windows workflow, not as a long-term free solution.

Best forWindows technicians evaluating active surveys, predictive planning, or formal client reports

Standout featureThe evaluation build exposes professional heatmaps, planning, plus editable reporting for 15 days
Acrylic Wi-Fi Heatmaps Pros
  • Professional-grade Windows survey workflow
  • Active plus passive survey support
  • Predictive network planning included
  • Broad selection of RF visualizations
  • Editable reporting available for evaluation
Acrylic Wi-Fi Heatmaps Cons
  • Free access expires after 15 days
  • Trial output is watermarked
  • Evaluation license excludes commercial use
Evaluation $0 15-day trial with watermarks; evaluation use only
Basic $129 One-month license for unlimited surveys plus 11 heatmap types
Try Acrylic Wi-Fi Heatmaps

How We Evaluated Free WiFi Site Survey Software

We checked whether each tool could move through the essential survey sequence: add or create a floor plan, calibrate the space where supported, record readings at repeatable positions, view the resulting coverage map, then save or export useful results. We also reviewed current platform availability, free-tier restrictions, hardware dependencies, account requirements, plus whether the free offer was permanent or merely an evaluation.

Scores favor tools that a home user or small IT team can keep using after the first map. We did not assign recovery-style percentages or pretend phone radios produce identical readings. WiFi measurements vary by device, antenna orientation, client chipset, background scanning, plus nearby activity.

How to Choose Free WiFi Site Survey Software for Your Property

Start with the device you will actually carry. A Windows laptop sees the network through a different radio than an Android phone, so choose the client type that resembles the devices having trouble. For a home dead-zone check, signal-strength heatmaps are usually enough. Offices with voice calls or roaming clients also need latency, throughput, channel use, plus repeatable walk paths.

Check what “free” means before drawing a large floor plan. Some apps keep every capture feature free but watermark exports. Others allow scanning at no cost while reserving heatmaps for a paid tier. A time-limited trial can be useful for one diagnostic weekend, though it is a poor choice for quarterly surveys.

Common WiFi Site Survey Mistakes That Distort Heatmaps

Do not survey immediately after changing router settings. Give access points plus clients time to reconnect, then walk at a normal pace while holding the device in a consistent position. Avoid covering the phone or laptop antenna with your body. Take more points near thick walls, stairwells, metal shelving, elevators, plus room corners.

A bright coverage map does not prove that the network is fast. Signal strength can look healthy while interference, overloaded backhaul, slow internet service, or poor roaming causes the real problem. Pair the heatmap with a throughput or latency test, then repeat the survey at a busy time of day.

Which Free WiFi Site Survey Tool Should You Use?

NetSpot earns first place because it covers the broadest mix of desktop access, floor-plan projects, plus nearby-network troubleshooting without burying a home user in RF jargon. Pick NetLens if you use a recent Android phone plus want unlimited exports, or ManageEngine if channel interference matters as much as coverage. WiFiman makes more sense inside UniFi, while Acrylic is a temporary route into professional Windows surveying.
Top pick NetSpot
Map the same room twice from the same measurement points, then investigate any result that changes by more than roughly 5 dB before moving an access point.

Free WiFi Site Survey Software Questions

What is the best free WiFi site survey software for a small office?
For a small office, the best free option is usually one that gives you heatmaps, signal strength readings, plus a simple floor plan import. Look for tools that run on a laptop or Android phone, because they are easier to use during a walkthrough.
How do I perform a WiFi site survey for free?
Start by loading your floor plan, then walk the space with a laptop or phone while recording signal readings from several spots. After that, review coverage gaps, dead zones, plus areas where channels overlap too much.
Which free WiFi survey tools work on Windows?
Several free WiFi survey tools support Windows, but most differ on whether they offer only live signal graphs or full heatmaps. If you need more than basic measurements, make sure the free tier includes floor plan mapping before you install it.
Can I use free WiFi site survey software on Android?
Yes, many survey apps for Android can log signal strength, channel data, plus roaming behavior while you walk the building. Android is often the easiest choice for quick on-site surveys because it stays portable.
What features should I look for in free WiFi site survey software?
Focus on floor plan import, heatmap generation, channel analysis, plus export options. If the free version cannot save or share reports, it may be fine for a one-time check but not for ongoing planning.
Is free WiFi site survey software accurate enough for home use?
Yes, for home troubleshooting it is usually accurate enough to spot weak rooms, router placement issues, plus interference from nearby networks. You do not need enterprise-grade tools unless you are designing a large or complex deployment.
What is the difference between WiFi survey software and WiFi analyzer apps?
WiFi analyzer apps show current signal, channel, plus nearby networks, while survey software maps those readings across a floor plan. If you want to understand coverage in one room, an analyzer can be enough, but a survey tool is better for whole-building planning.
How do I read a WiFi heatmap from a free survey tool?
Warm colors usually mean stronger coverage, while cooler colors point to weaker signal or unstable areas. Pay attention to corners, hallways, plus rooms with thick walls since those are common problem spots.
Are free WiFi site survey tools good for channel interference checks?
Yes, many free tools can show which channels are crowded so you can spot overlapping access points nearby. That said, some free versions only show a snapshot instead of a full report, so check before relying on it for a multi-AP network.
What is the best free alternative to paid WiFi survey software?
The best alternative is usually a lightweight tool that combines spectrum-style readings, heatmaps, plus exportable screenshots. If you only need basic coverage checks, a free mobile app can often replace a paid desktop suite.
Can I export reports from free WiFi site survey software?
Sometimes, but export is one of the features most likely to be limited in the free tier. If you need a PDF for a client or manager, confirm the tool can export the exact floor plan plus readings before you start the survey.
How do I survey a multi-floor building with free software?
Measure each floor separately, then label the maps clearly so readings do not get mixed together. If the app supports multiple floor plans, use that feature from the start because stairwells plus vertical bleed can distort results.
What should I do if free WiFi survey software will not detect my access point?
First, confirm the adapter supports the band your AP uses, especially 5 GHz or 6 GHz. If it still does not appear, try moving closer, disabling aggressive power saving, then rescan with a different wireless adapter.
Is there free WiFi survey software that supports 6 GHz WiFi 6E?
Some newer free tools do, but support is not universal, especially on older laptops or phones. Check both the software plus the wireless adapter because 6 GHz surveys need compatible hardware as well as app support.
What free WiFi site survey software is best for beginners?
The best beginner option is one with a clean interface, automatic heatmap creation, plus minimal setup. A simple tool is easier to learn than a feature-heavy suite, especially if you just want to find weak spots fast.
Download NetSpot Free · #1 Pick