FireFree - Your Path to Financial Freedom: FIRE Calculator
- Published on
Introduction
FireFree is a comprehensive FIRE (Financial Independence, Retire Early) calculator that transforms complex financial planning into clear, actionable insights. Built for anyone dreaming of early retirement, it tracks your entire financial picture in one place.
I created this project with Carol Hsiao as the flagship product of Aburi Studio, our mission-driven startup focused on making financial independence accessible to everyone.
Demo & Source Code
FireFree is live and ready to use:
- Demo: firefree.app
- Try Demo Mode: Experience the full app without signup
- Source Code: Private (part of Aburi Studio products)
Why We Built FireFree
After years of working in the tech industry, I became obsessed with one question: "How can we make financial independence accessible to everyone?"
Most FIRE calculators are either too simple (just a single number) or too complex (spreadsheets with hundreds of cells). We wanted to build something that:
- Tracks your complete financial picture across multiple currencies
- Visualizes your progress with beautiful, intuitive charts
- Calculates your exact FIRE date based on real numbers
- Respects your privacy with zero-knowledge encryption
- Works globally with full multi-currency support
That's why we created FireFree - to demystify the path to early retirement.
Key Features
Track Your Complete Net Worth
Monitor savings, investments, debts, and real assets across multiple currencies. FireFree automatically syncs exchange rates so you always see accurate totals.
Calculate Your FIRE Date
See your exact path to financial independence based on your real numbers. Input your monthly expenses, savings rate, and expected returns to get your personalized FIRE timeline.
Visualize Your Progress
Watch your net worth trends and forecast charts update in real-time. Beautiful visualizations make it easy to understand where you are and where you're going.
Go Global
Full multi-currency support with automatic exchange rate syncing. Track assets in USD, CAD, TWD, or any major currency.
Start Immediately
Try the full app in demo mode - no signup required. When you're ready, create an account to save your real financial data with zero-knowledge encryption.
Technologies
We built FireFree with a modern, scalable tech stack:
- Next.js 16: Latest React framework with App Router
- TypeScript: Type-safe development
- Supabase: Backend, authentication, and database
- Turborepo: Monorepo architecture for scalability
- Tailwind CSS: Rapid UI development
- Recharts: Beautiful financial charts
- next-intl: Full bilingual support (English/繁體中文)
- Vercel: Deployment and hosting
Architecture Highlights
- Zero-knowledge encryption: Your financial data is encrypted before it leaves your device
- Monorepo structure: Shared packages for consistency across our product suite
- Real-time sync: Changes reflect instantly across all your devices
- Responsive design: Works seamlessly on desktop, tablet, and mobile
How FireFree Works
- Add Your Assets: Input your savings accounts, investment portfolios, real estate, and other assets
- Track Your Debts: Record credit cards, loans, and mortgages
- Set Your Goals: Enter your target annual expenses and desired safety cushion
- Calculate Your FIRE Date: FireFree automatically calculates when you'll reach financial independence
- Monitor Progress: Track your net worth trends and adjust your strategy as needed
The Philosophy Behind FireFree
FireFree is built on the proven FIRE movement principles:
- The 4% Rule: Safely withdraw 4% of your portfolio annually in retirement
- Financial Independence Number = Annual Expenses × 25
- Focus on savings rate over absolute income
- Track net worth to measure real progress
Part of the Aburi Studio Ecosystem
FireFree is designed to work seamlessly with our other financial independence tools:
- CoreHour: Track your time and align it with income goals
- DailyPay: Monitor daily spending and bank balances
- Together, these tools provide a complete picture of your path to financial freedom
What Users Are Saying
"Finally, a FIRE calculator that doesn't feel like homework. The visualizations make it so clear where I'm at."
— Early beta user
"The multi-currency support is a game-changer. I have assets in three different countries and FireFree handles it perfectly."
— International investor
Our Vision
At Aburi Studio, we believe financial independence shouldn't be a privilege reserved for finance professionals. Everyone deserves tools that make the path to early retirement clear and achievable.
FireFree is our first step toward democratizing financial independence. We're continuously improving based on user feedback and adding new features to help more people achieve their FIRE goals.
Get Started Today
Ready to calculate your path to financial freedom?
Visit firefree.app and try the demo mode - no signup required.
Conclusion
Building FireFree has been an incredible journey. We've combined our passion for financial independence with modern technology to create a tool we genuinely believe can change lives.
If you have any feedback or suggestions, please feel free to contact us through the app or leave a comment below. We'd love to hear about your FIRE journey!
References
Inspiration and prior art for this project: