
FirewatchPost
A downloadable tool for Windows
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
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Assets (savings, investments, etc.) with customizable annual returns
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Liabilities (loans, debt) with interest rates
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Monthly income and expenses, each with optional annual growth
Control your savings strategy
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Allocate surplus savings across multiple asset classes
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Define different allocation strategies for different stages of life
Plan for retirement
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Set your current age and legal retirement age
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Include expected government pension income
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Optionally plan for early retirement with a custom withdrawal rate
Advanced simulation settings
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Adjust expected inflation
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Fine-tune assumptions to match your risk tolerance
Run powerful simulations
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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:
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An interactive chart
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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:
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Import your data from a JSON file
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Export your plan for backup or sharing
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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.
Purchase
In order to download this tool you must purchase it at or above the minimum price of $50 USD. You will get access to the following files:


