QuoVadis X mobile is available in three versions: Basic, Standard and Poweruser. To learn about the functions included, see here in chapter Introduction.

When you download and start the app for the first time, you will have the Poweruser free of charge for 7 days to test everything. After that the functionality will be reduced to Basic. To continue with Poweruser or Standard you need to buy a subscription.

So tap to Main menu and then Manage my licence, to open the In App Purchase dialog.

It will show you your current version and the expire date. Just tap on Buy QVXM Poweruser or Buy QVXM Standard to purchase a subscription period of one year.