What kind of app? Games? Battery Saver? Navigation?
I have a Droid Global 2 and have several apps. I have a couple free apps that I use many times. I have an app called "Bump App" which allows you to exchange information with someone else that has "Bump App". This is almost like handing someone a business card, except it is transfered to their phone and their information is transfered to your phone.
I have also have an app called "Kik Messages" which gives me free
text messages to others with Kik Messages app.
Those are a few apps I have, so maybe if you let us know what type of app you are looking for, we might be able to help you better.