Most mobile apps require a backend infrastructure, e.g. to retrieve data, manage app content or to send push notifications to app users. You can either build your own backend in the cloud, or you can choose for a hosted mBaaS (mobile backend as a service) solution. Either way, it is difficult to calculate the overall cost, since it typically depends on number of app users, but also number of requests etc. That’s why I have crafted a backend cost calculator, that I am happy to share with you.