The pricing varies depending on your currency, but is approximately $6.99 USD. Exact pricing is shown in the app before purchasing.
Using the app on multiple devices
The app is sold separately on different platforms (e.g. iOS, Android, Windows, Amazon Fire).
If you own multiple devices of the same platform, you can do so without an additional purchase as long as they are all signed into the same Apple/Google/Microsoft account. If the devices are on different platforms however you would have to make an additional purchase. This is because the licensing is linked to your Apple/Google/Microsoft account.
I have bought the app, but it’s showing the trial
This can happen for a number of reasons, please follow the following steps to resolve this:
Check that your device is connected to the internet.
Open the app store app on your device and ensure you are correctly signed in to the same account you used to purchase the app.
Restart the device (this often forces the app store app to update it’s license data)..
Open SongbookPro, navigate to the 'Buy it now' page in the settings and then press the 'Restore' button.