Awareness > control
You log. The app decides nothing.
Every logged expense is a manual act. The friction is the point — logging is how you become aware.
finance app · iOS
Small adjustments,
Small adjustments,
on course.
Tack is the expense notebook with good math. No automation, no motivational chatter, no judgment — just the number, the manual act, and an honest read of where you are.
Coming soon · App Store
today · 113% over
$125.00
$14.71
over
$110.29
principles
Correction > perfection
Off course? Correct.
Overspent yesterday? Today's goal shrinks to cover it. Saved? Today gets more room. Your daily goal adjusts itself as you spend — you just have to log.
Silence > alarms
No notifications. No badges. No coach.
Tack doesn't bother you. Open it when you need it, log, close. Direct, short, calm.
three screens · one flow
Diary to log. Trend to see. Planning to adjust.
Diary
Today's screen. How much you have left, your pace, every routine or aside expense. Three seconds per entry.
Trend
Daily, weekly, monthly. Watch the pace hold — no judgment, no alarms. The numbers alone tell the story.
Planning
The life you want to live. Monthly goal, fixed costs, subscriptions, aside — Tack splits what's left across the days.
manifesto
Log it. Correct. Carry on.
Small tacks, on course.