Apps like uSTART ®

Here are some great alternatives to uSTART ® by Ioxus Inc. :
Bluetooth Auto Connect App
Bluetooth Auto Connect App
★4.5
Arduino Bluetooth Controller
Arduino Bluetooth Controller
★3.8
EarStudio
EarStudio
★4.2
Bluetooth Remote
Bluetooth Remote
★4.8
Bluetooth Chat - GChat
Bluetooth Chat - GChat
★3.9
Arduino Bluetooth Controller
Arduino Bluetooth Controller
★3.6
nRF Toolbox for Bluetooth LE
nRF Toolbox for Bluetooth LE
★3.7
GoVee H5072/H5075 RMT Display
GoVee H5072/H5075 RMT Display
★3.8
Bluetooth Commander Pro
Bluetooth Commander Pro
★4.1
Seecure®
Seecure®
★4.3
My Control Panel
My Control Panel
★3.7
Bluetooth Remote & Mouse
Bluetooth Remote & Mouse
★3.8
Bluetooth Remote
Bluetooth Remote
★4.0
Genesis Digital Key
Genesis Digital Key
★4.4
Honda My Generator
Honda My Generator
★4.4
Custom Bluetooth Controller
Custom Bluetooth Controller
★4.3