COMPARISON
Lifeplanr vs cFIREsim
cFIREsim is a respected free FIRE calculator using historical backtesting, while Lifeplanr integrates a FIRE calculator into a broader life planning suite. Choose cFIREsim if you want free, detailed historical retirement simulations; choose Lifeplanr if you want FIRE planning alongside life calendar visualization, journaling, and travel tracking in one app.
Last updated: March 2026
At a Glance
What Is cFIREsim?
Crowdsourced FIRE simulator using historical market data
Best suited for: FIRE community members who want a free, historically-backed retirement simulation without paying for premium tools. Learn more at cFIREsim →
cFIREsim Key Features
- Historical backtesting with real market data
- Monte Carlo simulation option
- Customizable spending and income plans
- Social Security and pension modeling
- Success rate probability analysis
What Is Lifeplanr?
Lifeplanr is a life calendar app that visualizes your entire life as 4,680 weeks — from birth to age 90 — on a single interactive screen. Beyond the life-in-weeks visualization, it includes a full diary with mood tracking, a travel planner covering 195 countries, a FIRE calculator, and a people tracker for meaningful relationships.
- Life calendar grid — 4,680 weeks across 10 visual themes
- Diary/journal with built-in mood tracking (10 moods)
- FIRE calculator with savings rate visualization
- Travel planner — 195 countries with visit tracking
- People tracker for relationships and time invested
- Works on any device (PWA — Progressive Web App)
- Free tier includes life calendar, journal, and mood tracking
cFIREsim: Pros and Cons
👍 Pros
- Completely free with no account required
- Uses real historical market data for backtesting
- Trusted tool in the FIRE community for years
👎 Cons
- Dated interface that can be confusing for beginners
- No life calendar, journaling, or life planning features
- Web-only with no mobile optimization
Which Should You Choose?
Choose cFIREsim if:
FIRE community members who want a free, historically-backed retirement simulation without paying for premium tools
Choose Lifeplanr if:
You want a complete life planning tool that combines life-in-weeks visualization with FIRE tracking, mood journaling, travel planning, and relationship tracking in one app — without needing multiple tools or building a custom system.
Try Lifeplanr Free
Start with your life calendar — see all 4,680 weeks on a single screen. The free tier includes the full life calendar, journal, and mood tracking. No credit card required.
Start Your Life Calendar →