Obsidian is an amazing tool for, well, just about anything. While it’s designed to be a knowledge management system, there are loads of other applications. That said, it does have a few downsides; namely, syncing across devices can be difficult to pull off without paying for a subscription. While there are free options, they aren’t always reliable, and the Obsidian subreddit has recently seen a spate of posts about users losing data when syncing through services like iCloud and Google Drive.