I am looking to create my video thumbnails for my YouTube videos on my iPad Air 2 but I don't really know what are the best photo editors out there for the iPad. And I use a professional image editing software called GIMP which it is like Photoshop but it is free and easy to use on my Windows tablet Surface Pro 2 and don't really want make my thumbnails on my Surface Pro 2 anymore which I am looking to use my iPad Air 2 as a productivity device. So I really would like a photo editor that is like GIMP and PhotoShop that has lots of features and easy to use on my iPad to create my video thumbnails for my YouTube videos. What is the best photo editor on iPad??