In the beginning they did require a commercial license for a fee but they recently changed it to allow all kinds of use for free. https://obsidian.md/pricingGo down to FAQ about commercial licensing
I’ve watched doctors and nurses use software at varying degrees of functionality. The software UX can make or break the effectiveness. If the software was designed without continuous input from the frontline users, they will struggle.
In the beginning they did require a commercial license for a fee but they recently changed it to allow all kinds of use for free.
https://obsidian.md/pricing
Go down to FAQ about commercial licensing