Just what I was looking for!
So what’s the “in app purchase”?
Response from developer
Thanks for the feedback, and you make a good point about the lack of information about the in-app purchase. I'm sorry you felt deceived by this. The App Store description is now updated to state what features are free, and to mention that the Learning & Improving features are offered as an in-app purchase (with 3 hours of free access). Unfortunately we can't include the price in the description as this varies by currency and region, but that is revealed in the app as soon as the user selects the Learning & Improving menu option. 73 de M0WDV.
