You can set InnoCaption as your default calling app. If you select InnoCaption as your default calling app, when you click on a phone number link, the outbound call will automatically be placed through the InnoCaption app.
To set InnoCaption as your default calling app on iPhone
From your phone's home screen, open the Settings app
Tap Apps
Tap Default Apps
Tap Calling
Select InnoCaption
To set InnoCaption as your default calling app on Android
From your phone's home screen, open the Settings app
Tap Apps
Tap InnoCaption
Tap Set as default
Tap the Open supported links toggle to turn it ON (it will turn a color)
Go to your internet browser and tap on a phone number link
Select InnoCaption
Select Just once or Always