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Distribution Calculator

Easily operate with uncertainty
New in version 0.03.01
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A calculator that can deal with distributions ergonomically, to allow users to easily arrive at fermi estimates that incorporate uncertainty.

Tips:

■ The boxes represent the 90% confidence interval (5% to 95%) of your distributions
■ Swipe left or right to duplicate an input

Try this example estimating the number of grams lost with a month of exercise lifting:

10 to 30 kg lifted per exercise
× 0.25 to 0.75 meters lifted per exercise
× 9.81 gravitational constant, to get to Jules (swipe left at the bottom to duplicate the input)
× 10 reps per set
× 3 to 4 sets per exercise
÷ 15% 35%, wild guess on chemical to physical efficiency conversion
÷ 4, jules to calories
÷ 6K to 8K, calories burnt to lose one gram of fat
× 7 to 15 exercises in a gym session
× 2 to 4 times a week
× 4 weeks a month
÷ 10% to 30%, wild guess for share of loss that is due to the direct physical exercise
(as opposed to higher burn rate, cost of building muscles, etc.)
= ¿ to ? grams lost with the above exercise regime in a month

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 0.03.01 (301) suggested Added on Jul 24, 2025

    This version requires Android 7.0 or newer.

    It is built by F-Droid and guaranteed to correspond to this source tarball.

    Permissions
    • com.nunosempere.distributioncalculator.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 6.0 MiB PGP Signature | Build Log

  • Version 0.02.07 (207) - Added on Apr 22, 2025

    This version requires Android 7.0 or newer.

    It is built by F-Droid and guaranteed to correspond to this source tarball.

    Permissions
    • com.nunosempere.distributioncalculator.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 5.9 MiB PGP Signature | Build Log

  • Version 0.02.06 (206) - Added on Mar 28, 2025

    This version requires Android 7.0 or newer.

    It is built by F-Droid and guaranteed to correspond to this source tarball.

    Permissions
    • com.nunosempere.distributioncalculator.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 5.9 MiB PGP Signature | Build Log