I'm a solo dev with zero users right now, and I just spent an afternoon on a decision most people would've hardcoded in five minutes. Here's the setup. NotebookBloom is my Chrome extension for Google's NotebookLM. At launch I don't want to charge for much — I want people to actually use it, tell a friend, leave a review. So the plan is: only cloud sync (Google Drive backup) is Pro on day one. Everything else — flashcard export to Anki, citation export, bulk import — free. But "free on day ...