If you're using the API Server, only http connection is supported (Still up to BioStar 2.6) 

In order to use the mobile app with the API Server on the local network, you have to configure as below. 

1. Connect to your local Wifi network.

2. Enter your API Server name.

3. Enter your API Server IP after http://

4. The port number is 8795

Caution: iOS does not allow connection with http so the mobile app cannot be used with iPhones.