are there any psychology books you would recommend that could be used in and for products or a business itself, e.g. building an app with a freemium model and make the user spend a bunch of money?
I would like to deepen my relatively basic knowledge regarding this topic and find out if I could increase sales or even acquire more users using simple and effective techniques.
P.S. I recently ordered Thinking Fast and Slow by Daniel Kahnemann but haven’t read it at this point.
Thank you for any suggestion!