BLE Scanner: Bluetooth Monitor

BLE Scanner and Monitor is a Bluetooth Low Energy toolkit for developers, makers and IoT engineers. Scan nearby BLE devices, inspect every service as a GATT client, log sensor data, and simulate your own peripherals and beacons.

Use it as a BLE inspector and analyzer to test firmware on ESP32, Arduino and nRF52 boards, debug a Bluetooth peripheral, or watch a sensor for days and send its readings to your own server.

SCAN NEARBY DEVICES
Find Bluetooth LE devices and beacons around you with live signal strength in dBm, their advertising data and how recently each one was seen. Hide unnamed devices, choose how long a scan runs, rename devices so you can tell them apart, and connect with one tap.

GATT CLIENT AND INSPECTOR
Browse every service, characteristic and descriptor. Read values, write in hex or UTF-8, and subscribe to notify and indicate. Show values as text, hex or a list of bytes, and copy any UUID. Standard profiles such as Battery, Heart Rate and Device Information are named for you.

LIVE DASHBOARD
Pin the characteristics you care about to a dashboard that reconnects by itself. Watch values change in real time and follow them on a chart over the last minutes or hours.

ALERTS
Get a notification when a value goes above or below a limit, or when it contains a piece of text, a hex sequence or a run of bytes you choose.

DATA LOGGER
Record a characteristic on a timer, for example every 5 seconds for an hour. Review each recording with its minimum, maximum and average on a chart, choose how long data is kept, and export it to CSV or JSON.

PERIPHERAL SIMULATOR AND BEACON TRANSMITTER
Turn your phone into a BLE peripheral or beacon emulator. Broadcast iBeacon, AltBeacon, Eddystone UID and Eddystone URL, or run a custom GATT server with your own services and characteristics, update their values, and watch every client connect, read, write and subscribe in a live event log.

SEND DATA TO YOUR SERVER
Forward readings, or the devices found nearby, to any HTTP endpoint or webhook, or publish them to an MQTT broker over TCP, TLS or websockets. Choose when to send: every reading, only when changed, on a timer, in batches, or on a threshold. Turn raw bytes into named numbers, so your server receives readable values instead of hex. Use JSON, XML, CSV or your own template, an API key, bearer token or basic auth, and presets for Home Assistant, ThingsBoard, InfluxDB and Datadog. A delivery log shows every request, and failed ones can be sent again. Import and export endpoints as cURL.

BACKUP AND SYNC
Export your data to a file at any time and restore it on any phone; readings that are already there are skipped. With the Cloud plan, sync your settings across devices and back up your readings to your own Google Drive every day.

MADE FOR YOU
Light and dark themes, a screen that can stay awake while you monitor, and the whole app in 10 languages: English, Spanish, Portuguese, French, Russian, Arabic, Hindi, Bengali, Urdu and Indonesian.

WHO IT IS FOR
Firmware and app developers, IoT and smart home builders, QA engineers checking Bluetooth connectivity, students learning Bluetooth Low Energy, and anyone curious about the devices around them.

FREE, PRO AND CLOUD
No ads, and no account needed to start. Scanning, the GATT client, the dashboard, alerts and the beacon transmitter are free. Pro removes the limits: more dashboard slots, longer recordings and charts, unlimited alerts and profiles, JSON export and the custom GATT server. The Cloud plan adds cloud sync, Google Drive backup, more API endpoints and unlimited API calls.

Works with any Bluetooth 4.0 or newer BLE device: sensors, beacons, heart rate monitors, fitness trackers, smart home devices and your own boards.

Recent changes:
Google Drive backup stays connected after you restart the app.
Cloud Sync sign in now has its own page, with password reset built in.
Settings has a new Support section to rate, recommend or send feedback.
BLE Monitor now tells you in the app when an update is ready.
New About page, and clearer empty screens across the app.
Small fixes and polish throughout.