Apps like ST BLE Toolbox

Here are some great alternatives to ST BLE Toolbox by STMicroelectronics International NV :
BLE Scanner (Connect & Notify)
BLE Scanner (Connect & Notify)
★3.9
LightBlue® — Bluetooth LE
LightBlue® — Bluetooth LE
★3.3
NanoBeacon BLE Scanner
NanoBeacon BLE Scanner
★3.5
BLE Checker - Check Bluetooth
BLE Checker - Check Bluetooth
★4.3
Microchip Bluetooth Data
Microchip Bluetooth Data
★3.6
BLE Tool
BLE Tool
★4.4
Thingsup BLE Beacon Scanner an
Thingsup BLE Beacon Scanner an
★3.4
nRF Connect for Mobile
nRF Connect for Mobile
★4.3
Shelly BLE Debug
Shelly BLE Debug
★3.6
Simplicity Connect
Simplicity Connect
★3.9
Sonim BLE Connect
Sonim BLE Connect
★3.7
Bluetooth Terminal (BT Serial)
Bluetooth Terminal (BT Serial)
★4.9
u-blox BLE
u-blox BLE
★4.2
Active Suspension Control BLE
Active Suspension Control BLE
★4.0
DataLogger
DataLogger
★3.3
My BLE-ID
My BLE-ID
★4.2