For upgrading, the user clicks on the side list for the process.
The user then clicks on the settings which is present at the right bottom and after that go pro option is available and selects it.
After clicking on go pro setting, the user finds more info about the go pro version. He/she can check the policy and terms& conditions of the app.
Bear notes provide monthly as well as yearly subscription to the user. On selecting any one subscription, the app store of the devices takes to the payment section. The user is provided with 1 week free trial in monthly and 1 month free trial in yearly subscription. For further query, he/she can contact the help desk.