Notion

For me, finding Notion was really a game-changer in how I organise my notes, to-do's and even academic research. One of the best parts is the thriving community, with members giving also free advise and templates. They also offer growing number of integrations to other apps. There's a bit of a learning curve in using Notion, although using the basic features is really straight-forward. Using the more advanced features such as functions can felt a bit frustrating at first, since I expected them to work as functions do in Excel or Google Sheets - which was a wrong idea, since Notion databases are actual databases, not just sheets of information. There are of course plenty of things which could be improved - for example a native proper integration with calendar, possibility to link to files or folders in your computer and so on. The product is also developing fast, which is of course a good thing. It's just sometimes frustrating when the new features make your present setups obsolete. And the official documentation feels sometimes limited.