BeaconScanner is a free, open-source Mac utility that detects and displays nearby Bluetooth Low Energy devices broadcasting the iBeacon protocol.
What is BeaconScanner?
BeaconScanner is a lightweight macOS application that uses your Mac's built-in Bluetooth hardware to listen for iBeacon advertisements in the surrounding environment, surfacing each device's UUID, major/minor identifiers, signal strength (RSSI), and proximity estimate in a clean, readable list.
If you've ever wanted to audit a retail proximity-marketing installation, debug your own beacon deployment, or simply satisfy your curiosity about how many BLE beacons are quietly broadcasting around you right now, this is the tool you reach for first. It does one thing, it does it immediately on launch, and it stays out of your way.
What does BeaconScanner do best?
BeaconScanner excels at zero-friction iBeacon discovery — open it, watch the list populate in real time, done.
Where it genuinely shines is in developer and QA workflows. When you're testing an iOS app that reacts to beacon regions, having BeaconScanner open on a nearby MacBook gives you instant ground-truth confirmation that your beacon is actually transmitting the UUID and major/minor values you think it is. No separate iOS device required, no pairing dance, no account sign-in. The RSSI column updates live so you can physically walk the space and understand your signal envelope in a way that a phone-based tool makes awkward.
- Real-time BLE scan with continuously updating RSSI readings
- Displays UUID, major, minor, and estimated proximity per beacon
- No configuration required — Bluetooth on, app open, list appears
- Open-source (MIT) — auditable and trustworthy on managed hardware
Is BeaconScanner free?
Yes — BeaconScanner is completely free to download and use, with no in-app purchases, subscriptions, or feature gates of any kind.
It is published on GitHub under an open-source licence, which means the source code is fully auditable. For anyone deploying this on a corporate Mac where software provenance matters, that transparency is a meaningful advantage over closed freeware alternatives. You can build it yourself from source if your security policy demands it.
Who should use BeaconScanner?
iOS and macOS developers building proximity-aware apps will get the most immediate value, but the audience is broader than that.
Retail IT teams commissioning in-store beacon networks, venue managers auditing existing installations, and security researchers curious about passive BLE exposure all have legitimate reasons to run a quick scan. Even hobbyists experimenting with Raspberry Pi-based beacon transmitters find it invaluable for confirming their hardware is advertising correctly before investing time in an app integration. If your work ever intersects with physical-layer Bluetooth marketing or indoor positioning, BeaconScanner belongs in your utilities folder.
What are the best BeaconScanner alternatives?
For macOS-native BLE scanning, the closest alternatives are Bluetooth Screen Lock (different use-case), LightBlue (broader BLE explorer, also free, available on Mac and iOS), and nRF Connect (Nordic Semiconductor's cross-platform tool, significantly more powerful but heavier). If you need to see raw BLE advertisement packets beyond iBeacon format, LightBlue or nRF Connect are worth the extra complexity. For pure iBeacon monitoring with no learning curve, BeaconScanner remains the leanest choice.
On iOS, Apple's own Core Location simulator handles some of this in Xcode, but it synthesises signals rather than capturing real ones — BeaconScanner captures the real RF environment, which is what you need when hardware or deployment is the variable under test.
How does BeaconScanner compare to LightBlue?
BeaconScanner is narrower and faster to read at a glance; LightBlue is broader and more configurable.
LightBlue shows all BLE devices and lets you connect, inspect GATT services, and send data — it's a full BLE workbench. BeaconScanner ignores everything except iBeacon advertisements and presents the parsed iBeacon fields directly, so the signal-to-noise ratio is much higher when that's specifically what you're hunting for. I keep both installed: BeaconScanner for quick proximity audits, LightBlue when I need to poke at a device's service characteristics. They don't compete so much as complement each other.
