What's New

Upgrade to iOS 14, watchOS 7

App Description

The Annulus Circle App computes the number of square units it takes to completely fill an annulus. This area is computed from an Outer Radius and Inner Radius whereby: Area = π(R1² - R2²)

This app also computes a quadratrure rule whereby for the computed result: R1² less Computed Result less R2².

A graphical representation of the circle radii and area is presented.

Annulus circle has versions for iPad, iPhone and Apple Watch.

iPhone Screenshots

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Annulus Circle screenshot 1 Annulus Circle screenshot 2 Annulus Circle screenshot 3 Annulus Circle screenshot 4 Annulus Circle screenshot 5 Annulus Circle screenshot 6 Annulus Circle screenshot 7 Annulus Circle screenshot 8 Annulus Circle screenshot 9 Annulus Circle screenshot 10

iPad Screenshots

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Annulus Circle screenshot 11 Annulus Circle screenshot 12 Annulus Circle screenshot 13 Annulus Circle screenshot 14 Annulus Circle screenshot 15 Annulus Circle screenshot 16 Annulus Circle screenshot 17 Annulus Circle screenshot 18 Annulus Circle screenshot 19

App Changes

  • July 15, 2020 Initial release
  • October 22, 2020 New version 1.1