VSCO
One of the best and easiest to use apps for photo editing. With a wide verity of super unique preset filters you can create a style for your Instagram feed that is perfect your brand and company. There is also an assortment of more specific editing tools for dialing in the perfect look. Even if you are just wanting to showcase what is naturally in the photo and not drastically change to look, an app like VSCO is great for brighting and making your photos look more vivid.
Over
This is the best app for creating beautiful graphics with your photos. If want to add stylish text or a logo this app is perfect for that. They also have great template layouts for posting multiple photos at once. This is a great effect for your instagram stories if you are trying to show multiple photos without creating a million little dashes that could end up getting passed over. Also if the idea of creating your own graphic is a little overwhelming for you, they have templates for that as well. Lots of great looking concepts that you can add your own personalized text.
Retouch
This app is a life saver!!! Have you ever taken a photo and realized there was an object in the photo that wasn’t supposed to be in the picture… This app can fix it! You can easily remove unwanted abject or lines from the any photo. Its as simple as highlighting the thing you want to remove and Bam its gone! It also has a clone tool! This is one of the best tools in Photoshop and now you can have it in a mobile app. You simple select a part of the photo you want to use to duplicate and it will let you brush over with the selected area. This is great for expanding a texture or covering up parts of the photo with a nearby texture.