My how our education system has utterly failed the last two or three generations. Personal finances used to be taught in High School economics, including how to track spending. With the tap, swipe and scan payments we have these days, few people even keep a record of their spending other than perhaps the account balance. I use a checkbook program and spreadsheet together to keep track of where my money goes, and reconcile it with my bank statement every month to be sure everything adds up. This does mean I have to get paper receipts when I can't get a digital one, but living your life means you can't just float around through life expecting the apps and electronics to keep you on track, you have to do some work.