FirewatchPost

FirewatchPost is a privacy-first financial planning tool that helps you visualize, simulate, and stress-test your financial future.

Whether you’re planning long-term savings, exploring early retirement, or just trying to understand where your money is headed, FirewatchPost gives you clear projections and powerful simulations in one simple app.

What you can do

Enter your financial data

• Assets (savings, investments, etc.) with customizable annual returns

• Liabilities (loans, debt) with interest rates

• Monthly income and expenses, each with optional annual growth

Control your savings strategy

• Allocate surplus savings across multiple asset classes

• Define different allocation strategies for different stages of life

Plan for retirement

• Set your current age and legal retirement age

• Include expected government pension income

• Optionally plan for early retirement with a custom withdrawal rate

Advanced simulation settings

• Adjust expected inflation

• Fine-tune assumptions to match your risk tolerance

Run powerful simulations

• Standard Simulation
  A single, deterministic projection based on your exact inputs.

• Monte Carlo Simulation
  Runs hundreds of randomized simulations using variable annual returns, helping you estimate the probability of reaching your financial goals rather than relying on a single outcome.

Clear results

Results are shown in:

• An interactive chart

• A detailed table

Both show how your net worth evolves over time under different scenarios.

Import & export

Use the buttons in the top-right corner to:

• Import your data from a JSON file

• Export your plan for backup or sharing

• Clear all fields and start fresh

Privacy first

Your data never leaves your computer.
FirewatchPost does not remotely store, track, or share your information in any way.