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Distribution Calculator

Easily operate with uncertainty
新版本 0.03.01
Add history and tips screens

- Also: change higher field on suffix
- State is preserved when visiting history
- Update screenshots

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

版本

尽管下面提供了 APK 安装包的下载选项,但你应该注意,以这种方式安装将不会收到更新通知,这是一种不太安全的下载方式。 我们建议你安装使用 F-Droid 客户端。

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  • 版本 0.03.01 (301) 推荐 更新于 2025-07-24

    该版本需要 Android 7.0 及以上版本。

    此安装包由 F-Droid 构建并签名,且保证与此源代码 tarball 保持一致。

    权限
    • com.nunosempere.distributioncalculator.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    下载 APK 6.0 MiB PGP 签名 | 构建日志

  • 新版本 0.02.07
    force portrait mode, duplicate left input automatically; wipe inputs more often

    Duplicating left input automatically might save people a
    couple of clicks when operating with scalars. If instead of
    clicking "=" the user clicks the right field, the field resets
    to zero so that the user can type normally.

    Additionally, inputs are now wiped to 0.0 when clicking their respective fields,
    rather than having to wait for a "clear" button. This makes the clear button redundant, and so is removed.
  • 版本 0.02.07 (207) - 更新于 2025-04-22

    该版本需要 Android 7.0 及以上版本。

    此安装包由 F-Droid 构建并签名,且保证与此源代码 tarball 保持一致。

    权限
    • com.nunosempere.distributioncalculator.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    下载 APK 5.9 MiB PGP 签名 | 构建日志

  • 新版本 0.02.06
    Improve description and documentation, add screenshots with 90% confidence interval labels
  • 版本 0.02.06 (206) - 更新于 2025-03-28

    该版本需要 Android 7.0 及以上版本。

    此安装包由 F-Droid 构建并签名,且保证与此源代码 tarball 保持一致。

    权限
    • com.nunosempere.distributioncalculator.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    下载 APK 5.9 MiB PGP 签名 | 构建日志