Donation Key is not an application and no icons will be added to your device.
This application may be purchased as a donation, and may possibly unlock donation only features in the future. Profits will be put towards future app development.
Anything helps, because as a student, I don't have much money to spend on developing applications. If you aren't able to purchase this, a positive rating on one of my other applications also helps a lot. Thanks for the support!
Screenshots are of free applications Mint.com for DashClock and MyFitnessPal for DashClock.