Sierra Circuit Design

The company develops programs for Android. Currently set up two games and one educational application. Currently preparing to release several more applications for the Android operating system.

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Concentration
Free
Play a simplified single-player version of this concentration card game.
Android
New Worlds
Free
Fold the square in various geometric shapes in a Tangram based puzzle game.
Android
Chromatic Tuner
Free
This app measures the fundamental frequency of sound at the microphone input and displays that frequency as well as the closest note.
Android