Set monthly limits on the spending you regret. Once they're set, they stay set.

The problem is that at 11:47pm, the decision you made at the start of the month becomes very easy to undo.
Constance makes the earlier decision stick.
One-tap checkout. Saved cards. Instant credit. Pay in four. An enormous amount of engineering points in the direction of yes. Almost none of it points the other way.
Constance is built to help you save.
Connect your existing account during onboarding and identify where money repeatedly disappears.
Choose exactly how much you're prepared to spend on each problem category.
Once the period begins, those limits aren't there merely to warn you. They're there to work. Everything else continues normally.
Constance only steps in where you asked it to. Everything else behaves normally.
Not a locked-down account. Three lines you drew yourself.
These are the payments Constance turned down last month, and when they came in.
You decided that back on the 1st. Constance just stuck to it.
Illustrative. Your categories and limits are your own.

The Constance account is provided by Griffin, the regulated bank behind it. Your salary, direct debits and day-to-day payments work as you'd expect.
Constance adds the limits you asked for, and holds them — no changing your mind in the moment.