Name: Gamma Calculator Pro
Price: 3.99 USD
Author: Gerrit kleyn Winkel

Not ready

Runs in an iPhone-sized window with black bars on both sides.

Built with the iOS 26 SDK or older.

Version: 2.7.1
Last App Store update: Mar 20, 2026
Checked daily: 55 minutes ago

Gamma Calculator Pro

Its iPhone screenshot, from the App Store

Gamma Calculator Pro on the inner screen: runs in an iPhone-sized window with black bars on both sides. It gets 1,127 × 2,007 pixels, drawn to the geometry measured in the simulator.

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How we decide

Release date
Last updated Mar 20, 2026, before the iOS 27 SDK existed, so it can’t fill the screen.

View on the App Store

Is Gamma Calculator Pro ready for iPhone Duo?

How we know