Fhotoroom

Fhotoroom is a community award-winning app for android and iOS devices that can do basic photo editing for you, such as:

rotate, crop, resize, auto fit, fine-tune colors, adjust saturation, exposure and softness, apply light leaks and styles with adjustable strength, and add frames to your photos Source.

It has a user-friendly interface and can edit photos of large size and allow for larger previews.