You can find out many photo apps with awesome filters, but if you want to add some funny masks for your photos, the following photo app iMask Pro may be more suitable for you.
iMask Pro is an interesting photo app developed by VNAPP, and designed for iPhone and iPod touch. The iPhone app has a simple and intuitive user interface. When getting into the photo app, you can import your photo from your camera roll or directly the a photo in the app for further editing, while using built-in 48 interesting masks you can easily add various funny elements for your photos. Moreover, the photo app also comes with 4 photo filters. When completing your masterpiece, you can also share the funny photo with friends via Facebook and Email.
iMask Pro with a size of 4.1 MB is compatible with iPhone, iPod touch and iPad running iOS 5.1 or later. The iPhone app is free for a limited time at present. If you’re interested, jump to App Store for more details.