Running an open source app: Usage, costs and community donations

Re your question on saving costs: If you run it on a single Linux VPS, then I suspect you can get the costs down to 5-10$ per month.

One thing I find interesting is the growth chart: It's linear. But given that the app clearly has some traction, and is viral in nature, how come it isn't exponential?

Best I’ve been able to do is around $22 a month on DO, would love to hear alternatives that are cheaper