Personal Finance Calendar

Know
where
you
stand.

fin0 gives you one signal — green, yellow, or red — that tells you the true state of your money. No dashboards. No noise. Just clarity.

Start free trial → How it works

14 days free · No credit card required

Corridor statusToday
Green
On track · spending within bounds
Today
Yellow
Watch it · approaching the edge
Alert
Red
Act now · corridor crossed
Over
August 2026
Mo
Tu
We
Th
Fr
Sa
Su
Green — on track

Three states.
One truth.

Every day, fin0 computes your corridor — based on budget thresholds, transactions, and trajectory. No spreadsheets. No anxiety.

The corridor signal is a single daily ratio: actual spend vs. your pro-rated monthly budget. Below 90% → green. 90–115% → yellow. Above 115% → red. fin0 does the math so you don't have to.

Green
On track

Spending is within bounds. Savings targets are met. You are exactly where you should be — or ahead.

Yellow
Watch it

Still in the corridor, but approaching the edge. Something needs attention — not urgently, but today.

Red
Act now

You've left the corridor. A budget threshold was crossed. fin0 tells you where — so you can fix it fast.

Built for
people,
not dashboards.

Most finance apps pile on features you'll ignore. fin0 does one thing: give you a clear signal every day. Calendar-native. Multi-currency. All your devices.

Calendar-first

Finances live in time. fin0 surfaces your signal on a familiar calendar — not in endless tables or pie charts you'll never look at again.

Budget corridors

Define thresholds per period. fin0 watches the boundaries — so you don't have to live in a spreadsheet.

iOS · Android · Web

One account, all your devices. The corridor signal follows you — native apps on mobile, instant access on the web.

Start free.
Stay clear.

A 14-day full-access trial, no card required. Then pick the plan that fits. Cancel anytime.

Trial
Free
14 days, no card required
  • Full access to all features
  • Corridor signal — daily
  • iOS, Android & Web
  • Manual transaction entry
  • 14-day access
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Monthly
$4.99
per month · cancel anytime
  • Everything in trial
  • Unlimited history
  • Transaction import (CSV)
  • Push notifications
  • History & trends
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Yearly
$39
per year · billed annually
Save 35% vs monthly
  • Everything in monthly
  • Priority support
  • Early access to new features
  • Export your data anytime
  • One account, all devices
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Available on iOS · Android · Web

Your finances.
Your signal.
Every day.

Start free trial → See how it works

14 days free · No credit card · Cancel anytime