Gelo is a brand new app from app developers Fotosyn, think Bleach Bypass. Gelo allows you to easily add coloured gels, shape overlays and gradients to your images. You can work with solid color, strong geometric shaps and gradients in a variety of blend modes to enhance color or add design impact to your images.
This app supports full resolution and will soonn be receiving an update with multiple palette sets, overlay text and overlage images.
Gelo retails for $0.99/£0.69 and you can download it here.