Most people have money spread across more places than they'd guess at first — cash in a wallet, a checking account, a savings account, maybe a digital wallet for smaller purchases. Each one drifts from its real balance the moment it stops being actively tracked.

Why balances drift

A bank app shows an account's balance accurately because the bank tracks every transaction automatically. Cash doesn't have that — the only record of how much cash you have is the one you keep yourself, and it goes stale the first time a purchase doesn't get logged.

Every entry should touch a specific account

Logging "spent $40 on groceries" is useful. Logging "spent $40 on groceries, from the checking account" is what keeps that account's balance accurate. The difference matters once you're tracking more than one place money can come from.

Transfers aren't expenses

Moving $200 from checking into a savings account isn't spending — it's a transfer. If it gets logged as an expense, your spending total goes up for money that didn't actually leave your overall finances, and your category totals stop meaning anything. Transfers need to be their own category of entry, not a workaround using expenses and income.

One dashboard beats several mental estimates

The value of tracking every account in one place isn't just convenience — it's that "how much money do I actually have right now" becomes a fact you can check, instead of a rough estimate assembled from memory across three different apps.