Sigh. ReMarkable. It's just remarkable how they keep shooting themselves in the foot. Their hardware is great, but their software just sucks. And for no real reason, as far as I can understand. They technically do have a cloud subscription that needs to lock out users, I guess? For example, they don't have handwriting recognition for non-Latin languages. They don't even have on-screen _keyboards_ for non-Latin langua…
But then they can't try to force people into their sweet, sweet subscription services.
Joplin has a paid subscription sync service and is free and open source software.
It's a different business model, but it's possible.