Profile PictureJames Please

FI Calc

$3+
38 ratings

FI Calc is a calculator that simulates retirements using historical data, which is a strategy called "backtesting." The classic 4% Rule was derived from backtesting.

FI Calc is free. It is designed, built, supported, and maintained by one person (me, James. Nice to meet you!), and I work on it in my free time. If you've found value from the app or from email support, please consider donating to support the project.

Please note: donating does not unlock any new functionality in the app.

Thank you!

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This is a donation, not a product. If you ever wish to get your money back you can, no questions asked.

Last updated Sep 16, 2023

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Ratings

5.0
(38 ratings)
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$3+

FI Calc

38 ratings
Add to cart