Instagram Post Editor for Mobile

My ideal app would cater specifically to mobile devices, both iOS and Android. Key features should include the ability to apply filters and effects to photos for Instagram posting. In addition, I desire a batch processing feature, to handle multiple posts at once. The ideal freelancer for this project will have app development experience and an understanding of how to implement these specific features. Excellent usability is paramount, and proven experience optimizing for mobile platforms will be highly regarded.