@newbiedeveloper Community members are not permitted to post apk files in the community. If the developer agrees to send you an apk directly that is OK but he/she cannot post it here.
Are you asking for an example showing how to use Kumaraswamy's tool? Someone who knows might post an aia file or show some Blocks here. An example is posted here Background Tasks: Run the app in the background .
Use that example and experiment please. Ask future questions here .