These dumb fintech things.
Musk-Owned X releases X Money with up to 6% APY interest... Except like Chime, Dave, and other shit, it isn't a bank. So if they decide to nuke it, rugpull, or default on your accounts while paying off the rich when they close the service, you are owed nothing.
When you see big claims please read the fine print. FDIC/NCUA exist for a reason. Rich people can shrug off thousands in losses, but the rest of us can't.