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Comparing Simulations

By Lauren Boland | August 28, 2025

Note:Discussed in this post is a Pro-only feature.

If you've used retirement planning tools like FIREproof for any amount of time, you'll find yourself wondering "What would this specific scenario look like with 1 different assumption?". Or you might be using our What-if panel to see if an extended bout of bad equity performance would kill your retirement plans. Well, we're just now releasing a better way to visualize some of these comparisons.

For Pro users only, you'll see the Compare Sims button on the sidebar. compare sims button

Clicking on that will pop-up a view with 2 dropdown menus to allow you to choose which 2 (for now) simulations you want to compare. After selecting your simulations, you'll be presented with a condensed version of the main output page to make your conclusions. The simulations will be labeled with different colors, will show their respective names, and will have their success rates visible.

What's next?

As the note on the comparison page suggests, this is just the first iteration of this. I want to include more comparison metrics, and the ability to do more than 2 simulations. If you have any suggestions as to what we can add to the comparison, you'll find my contact information at the bottom of this blog page.

-Lauren

Support this project!

This project is currently in Beta, but I'm including a subscription for a "Pro" version. Pro users will be the first to see new features, and will have a limited set of features available only to them. These subscriptions will support development of this tool and allow me to consider spending even more time on this project (Early Retirement anyone? A girl can dream).

Lauren Boland

Lauren Boland

Founder of FIREproof. FIRE nerd. Reddit Moderator.

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