File:GD - icon notice.png

The icon GardenDiary uses when it adds an item to your Notification Bar, on Android.

I believe that it qualifies as Fair Use, thus:

The purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes;

-- Its use here is both nonprofit and educational.

The amount and substantiality of the portion used in relation to the copyrighted work as a whole;

-- Negligible when compared to the games as a whole.

The effect of the use upon the potential market for or value of the copyrighted work.

-- Its use here will hopefully increase the works' values by encouraging more people to install them, thus giving the author more ad revenue and in-app purchases.