I strongly encourage you to charge (lots) of money ASAP. I love the open source, offline, rent-free ethnos but also if you've built something truly valuable, charge money for it. Donations don't count as a viable monetization strategy. Even if the software is free and you're just offering $500/hour consulting as an add-on to the software, that helps me trust the project has sticking power. P.S. I think Tauri is such…
I think this is the mindset that ruined the web.
If a solo dev builds a tool that helps even a handful of people manage 5-6-7 figure portfolios, that's worth more than a cup of coffee.