BleSmith: BLE Scanner & GATT

Rapid Circuitry

About this app

BleSmith is a professional Bluetooth Low Energy (BLE) scanner, GATT explorer, packet decoder and firmware update toolkit for Android.

Built for firmware engineers, embedded developers, Android developers, IoT teams and QA testers, BleSmith helps you discover BLE devices, debug GATT services, analyze advertising packets, monitor RSSI, emulate peripherals and run DFU or OTA updates from your phone.

BLE SCANNER & ADVERTISEMENT ANALYZER
• Discover nearby Bluetooth LE devices and advertisers in real time
• Filter by device name, MAC address, service UUID and RSSI
• Inspect raw advertising data, manufacturer data, TX power, PHY and intervals
• Decode iBeacon, Eddystone and AltBeacon packets
• Scan BLE 5 extended and coded PHY advertisements on supported devices

GATT EXPLORER & CLIENT
• Browse services, characteristics and descriptors
• Read and write values in common developer formats
• Subscribe to notifications and indications
• Adjust MTU, PHY and connection priority
• Monitor signal strength and characteristic values live

PACKET DECODER & PROTOCOL TOOLS
• Build declarative or scripted decoders for custom BLE payloads
• Preview decoded fields from live device data
• Import definitions from Protobuf or C structs
• Export Wireshark Lua dissectors, C headers and JSON

RSSI MONITORING, LOGGING & AUTOMATION
• Plot RSSI and telemetry in real time
• Test GATT throughput and UART-style data streams
• Run repeatable multi-step BLE test sequences
• Manage multiple device connections
• Export sessions as CSV, JSON or PCAPNG
• Import Bluetooth snoop logs for Wireshark analysis

BLE PERIPHERAL & GATT SERVER
• Turn your Android phone into a BLE peripheral
• Start GATT server templates for Heart Rate, Battery, Device Information, Nordic UART and HID
• Clone a discovered GATT structure for app and firmware testing

DFU & OTA FIRMWARE UPDATE
• Run Nordic legacy and secure DFU
• Update Zephyr and Mynewt devices with MCUmgr/SMP
• Use generic BLE OTA workflows for compatible firmware
• Test standard BLE devices built with ESP32, nRF52, Arduino-compatible boards, sensors, wearables and IoT hardware

BUILT FOR BLE DEVELOPMENT
• Vendor-neutral tools for firmware bring-up, mobile integration and QA
• Focused dark interface for long debugging sessions
• BLE project data and saved workspace files stay on your device

An account is required to use BleSmith. Bluetooth and location permissions are used for nearby-device discovery as required by Android and device compatibility.

Install BleSmith and carry a serious BLE development workbench wherever you go.

What’s new

* Delete your account from inside the app — ⋮ menu → Account → Delete my
account. Permanently removes your email, display name and password from
our servers.
* Firmware update: the Nordic and MCUmgr transports no longer show a
permanent "PENDING" badge — both run real transfers.
* Nordic DFU now correctly states it accepts signed .zip packages only.
* Peripheral mode: clearer guidance on cloning a discovered GATT tree.