About this app
See how a temporary income gap, unexpected repair, or cost increase could change your household cash balance before it happens.
QuietRunway is a focused, offline scenario planner for Windows. Enter your available cash, regular monthly income and costs, then add one or more “what-if” adjustments. QuietRunway compares your normal baseline with the scenario, highlights the lowest projected balance, and shows when you may cross a reserve floor that you choose.
Your scenarios stay on your device. QuietRunway has no account system, bank connection, analytics, advertising, or data sale. Export a portable JSON backup whenever you want.
Features:
- Compare baseline and scenario cash paths over 3–36 months
- Model temporary expenses, income changes, or recurring cost increases
- See monthly breathing room, lowest cash, reserve-floor timing, and ending difference
- Start quickly with repair, income-gap, and cost-increase presets
- Save automatically on your Windows device
- Import and export human-readable scenario files
- Use a keyboard-friendly, high-contrast interface
- Choose from 17 interface languages, including right-to-left Arabic and Urdu
- Use 18 currencies with locale-aware symbols and number formatting
- Work fully offline with no login
QuietRunway is a planning and simulation tool. It does not provide financial, investment, tax, or legal advice.
One-time purchase. No subscriptions or in-app purchases. Currency selection changes display formatting, not exchange rates. Projections are simplified estimates based only on the values you enter.