Insta Portrait 4:5 Crop for Android is a free and super easy to use application to crop images in Portrait mode for sharing on Instagram & Facebook.
Use the crop functionality to remove unwanted portions of the image and create Portrait Images in 4:5 aspect ratio to better adjust your photo.
After editing the image you can either share the Image on Facebook or Instagram or you can either save it on your Mobile device. Use the save or share buttons on the preview screen. Saving it will create a special folder called "InstaPortraitCrop", that will store all images generated from this application.