No. Not exactly. RaffleSheets offers a free 2-week trial period during which all features and capabilities are unlocked and available to try out. After the trial period, most of the functionality will be locked and only Normal Bingo will be available without a subscription.
If all you play is Normal Bingo, In-App Purchases are not required in order to use Raffle Sheets, however they do provide a way for users who like our products to support us and the continuous development of new features and improvements to our apps.