To purchase FamilyAlbum Premium, go to the Settings tab and select "FamilyAlbum Premium." Please follow the instructions on the page that appears to complete your purchase.
Premium lasts for one month and automatically renews at the end of the billing cycle. Payments are made through the App Store and Google Play, so you can use credit cards, iTunes cards, or Google Play cards to pay. iTunes cards must be redeemed in the App Store, while Google Play cards must be redeemed in Google Play to be used. For more information, please check each platform's respective support page.
・iOS: https://support.apple.com/
・Google Play: https://support.google.com/googleplay/answer/2476088