GroupCalc for Phones and Tablets
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Keystone Calculator
What is the Keystone Effect?
Release Announcements
GroupCalc Pro for iOS now available in the App Store
GroupCalc Pro for iOS now available in the App Store
15-Sep-2015 GroupCalc Pro version is now available in the App Store.
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GroupCalc Overview
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Small Groups Calculator
Big Groups Calculator
Keystone Calculator
What is the Keystone Effect?
Sensor Size and Aspect Ratio
How to Use the Calculator
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Announcements
GroupCalc V2.0.14 for Android and iOS Released
GroupCalc V1.5.18 for Android and V1.5.16 for iOS Released
GroupCalc V1.4.18 for Android Released