The WhatsApp Business Model based around selling user data is predatory, exploitative, and not the only way to monetize an app, as Rakuten's VP explains.

It is a huge task to find the right recurring payment solution for a SaaS business. But you can try freemiums and free trials to make a right decision.

Will a free product work for you? Maybe, maybe not. But if your company doesn't pass these checks, then it definitely won't.