I'd recommend to avoid as much bureaucracy as possible and launch with minimal effort. Don't waste time and money on things that aren't necessary. Especially as

I'd recommend to avoid as much bureaucracy as possible and launch with minimal effort. Don't waste time and money on things that aren't necessary. Especially as a single dev, the risks are usually very low and not worth the effort to set up a formal corporation. The major competitive advantage of a single founder is speed and agility; bureacracy slows you down.