Yes, the FineReader mobile app will only function as long as you have enough page credits in your FineReader Online account. In order to use FineReader iOS, you need to sign up with FineReader Online and then enter your account credentials into FineReader iOS. If you use FineReader Android, you can sign up with FineReader Online directly from the app.

Note: In June 2020 ABBYY announces the process of sunsetting FineReader Mobile Client for Android and iOS platforms. More information about how to continue using the app is published in the article.