Android Question Please advice on developing an app with adverts and billing


Licensed User
Longtime User
Hi there

I'd like some advise please.

I need to develop an app, actually a book app. This will have about 12 chapters. The first three chapters will be free and the rest cost $0.99 per chapter. A person should be able to buy all the chapters 4-12 or just a single chapter at a time. Whilst a person is using the free 3 chapters, adverts should be active until a chapter/whole book is bought. The adverts should stop on purchase.

Can some please advise on how I can achieve this easily and effectively please? What is the best stable advertising platform that I can use within b4a and how can I best handle the in-app purchases?


PS: This is a book app I did previously and I will be using the same approach.