An app which automatically "downloads and installs" other apps in the marketplace, depending on the preferences the user selects.
For example;
Find apps which are:
1. Games
2. Free/or paid
3. 5 stars
4. 1000000 downloads
5. <100MB
etc.
Specifically designed for people who don't know what to download, and would rather have a large variety to choose from, on their pad or phone device.