System requirements:

Smartphone or tablet running Android OS 4.0 & above, ARMv7 processor, OpenGLES 2.0 supported GPU, camera, GPS sensor.

(* iOS version is not available at the moment.)

Installation:

On Android devices:

First, click the download link. After download completed, open the notification drawer & click the notification.

From PC to Android devices:

First, download the apk file to your PC. Then copy it to your Android device & open it with a file manager.

(* Make sure you have enabled your device to install app from Unknown Sources in Security Settings.)

Notes:

• Viewing experience highly depends on accurate & stable GPS sensing. If GPS signal is weak, the location & orientation of ducks may shift or flicker, or no duck will be shown at all.
• The app is CPU intensive & power hungry.
• The resolution of captured screenshots is that of your screen but not that of your camera.

Known bugs & limitations:

• Current version requires a file manager to open the captured screenshots. (You may use the file manager to move the screenshots to your photo gallery for easier review afterward.)
• If the device's orientation is wrongly detected when the app launches, the ducks will be shown in wrong orientation accordingly. (Try to switch the device's orientation a few times to see if the error is corrected. Otherwise, stop the app & re-launch it again.)