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 · 32% spent
$212.50
free today
·
used
$100
of
$312.50
principles
Correction > perfection
Off course? Correct.
A sailboat never moves in a straight line. The good navigator doesn't avoid drift — they correct quickly. Tack is the instrument.
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. Course to adjust.