| What it does | Free FIRE financial planner with Monte Carlo simulation and historical backtesting
| Free calculators and guides for business, marketing, SaaS, ecommerce, real estate, restaurants and software decisions
|
|---|
| Key features | - Monte Carlo simulation with up to 5,000 runs
- Historical backtesting against every market period since 1872
- US federal, state and payroll tax calculations for all 50 states
- Roth conversion ladder and RMD planning
- Six stress tests including market crash and job loss
- Three withdrawal strategies with 59.5 rule enforcement
- Support for 9 asset types with individual growth rates
- Month-by-month income and expense modeling with custom timelines
- Life event planning
- 9-currency support with auto-detection
| - 42 free calculators across ROI, marketing, SaaS, ecommerce, real estate, restaurant and software categories
- Transparent formulas with explanations and examples for each calculation
- Decision-focused results emphasizing practical metrics like ROI, ROAS, profit, margin, payback, CAC and LTV
- Browser-based calculations with optional account signup to save and export reports
- Downloadable and printable reports in multiple formats including PDF, CSV and images
- Practical guides accompanying each calculator with assumptions and business context
- Responsive design optimized for phones, tablets, laptops and desktops
- Popular calculators including SEO ROI, Google Ads ROI, SaaS LTV:CAC, MRR, ARR and NRR metrics
- Covers multiple business use cases including marketing, SaaS, ecommerce, real estate and restaurants
|
|---|
| What makes it different | - Runs entirely in your browser with no account needed or data stored on servers
- Tests retirement against 154 years of historical market data since 1872
- Calculates exact tax liability for all 50 US states plus federal and payroll taxes
- Completely private with no data collection, selling or sharing
- Works offline on Android with full planner functionality
| - Clear explanations and context instead of just numbers from calculators
- No signup required for basic calculator use
- Consistent interface across all calculators designed for real business decisions
- Educational content showing assumptions and examples for each calculation
- Brings scattered business metrics into one unified platform
|
|---|
firenum™
SolveIndex