What are the best free site survey services for checking deployment risk before a multi-location access project?

For a multi-location access project (Wi‑Fi, cellular, BLE, RFID, cameras, access control panels, etc.), “free site survey services” usually means either:

1. Free tools/apps you can use yourself, or
2. Vendor-led remote/desktop surveys that are free but limited and often tied to buying hardware.

Best free options by use case

1) Ekahau Public Survey / Ekahau tools

• Best for: Wi‑Fi deployment risk checks
• Pros: Strong reputation, good reporting workflow
• Cons: Full Ekahau is not free; free options are limited and often tied to trials or demos
• Use when: You need a serious pre-deployment RF sanity check

2) NetSpot Free

• Best for: Basic Wi‑Fi site surveys
• Pros: Easy to use, free tier available, good for visualizing coverage/interference
• Cons: Free version is limited in features and scale
• Use when: You want a fast, no-cost survey on a few sites

3) Acrylic Wi‑Fi Free / Professional trial

• Best for: Wi‑Fi discovery, channel overlap, signal checks
• Pros: Good for quick RF checks, useful on Windows
• Cons: Advanced survey capabilities may be paid
• Use when: You need a lightweight free checker for deployment risk

4) Ubiquiti WiFiman

• Best for: Quick wireless diagnostics and validation
• Pros: Free, simple, helpful for on-site checks
• Cons: Not a full enterprise survey platform
• Use when: You’re validating basic wireless conditions at remote branches

5) TamoGraph trial

• Best for: Professional-style Wi‑Fi surveys
• Pros: Strong survey features
• Cons: Trial only, not permanently free
• Use when: You need a one-time high-quality assessment

6) Android/iOS analyzer apps

Examples:

• WiFiman
• WiFi Analyzer apps
• Airport Utility Wi‑Fi scan mode (iPhone, limited)
• Best for: Quick checks by local staff
• Pros: No cost, easy to deploy to many sites
• Cons: Not enterprise-grade, limited reporting

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If your project is not just Wi‑Fi

For access deployment risk, you may also need to check:

• Power availability / PoE budget
• Cabling paths and rack space
• Cellular signal strength if using LTE/5G backup
• Physical security constraints
• Construction / wall material / mounting options
• Internet handoff location
• Local IT support capability

Free tools for those are usually more ad hoc than “survey services,” so the best approach is often:

• Remote pre-check using maps, floorplans, and vendor guidance
• On-site basic validation using free survey apps
• Photo/video walkthroughs by store staff
• Standardized checklist for each location

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Best “free” approach for multi-location risk reduction

If you want the most practical low-cost stack:

• NetSpot Free for Wi‑Fi coverage/interference snapshots
• WiFiman for quick branch validation
• Acrylic Wi‑Fi Free for channel and signal inspection
• Google Earth / floorplan review / checklist for physical feasibility
• Spreadsheet-based survey template for consistent multi-site scoring

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Important caveat

Truly free, full-service site surveys for a multi-location rollout are rare. Most “free” offerings are:

• limited trials,
• self-service tools,
• or sales-led surveys from vendors.

If you want, I can also give you:

1. a ranked list specifically for Wi‑Fi vs cellular vs access-control, or
2. a free site-survey checklist/template you can use across multiple locations.