Apps like BlueSPP

Here are some great alternatives to BlueSPP by 沈垚 / ShenYao China Classic :
Bluetooth Commander
Bluetooth Commander
★3.3
Serial Bluetooth Terminal
Serial Bluetooth Terminal
★4.7
Bluetooth SPP Manager
Bluetooth SPP Manager
★3.8
Communication Bridge Pro
Communication Bridge Pro
★4.2
Bluetooth TCP Bridge
Bluetooth TCP Bridge
★3.6
Bluetooth Classic
Bluetooth Classic
★3.4
Serverless Bluetooth Gamepad
Serverless Bluetooth Gamepad
★3.3
BlueTooth Terminal eDebugger
BlueTooth Terminal eDebugger
★3.8
Connect Anduino
Connect Anduino
★4.5
Bluetooth Terminal
Bluetooth Terminal
★5.0
BlueStick Control [Phone]
BlueStick Control [Phone]
★3.5
nRF Connect for Mobile
nRF Connect for Mobile
★4.1
Bluetooth Terminal HC-05
Bluetooth Terminal HC-05
★4.1
Bluetooth Terminal HC-05 Pro
Bluetooth Terminal HC-05 Pro
★4.3
Bluetooth Electronics
Bluetooth Electronics
★4.1
Bluetooth Commander Pro
Bluetooth Commander Pro
★4.1