Editing a picture on your smartphone sometimes is better than using a professional software because it’s easier, less time consuming, and free (mostly).
Here are a few of my recommended editing apps for IOS devices:
Photoshop Fix: Photoshop version for Iphone, less tools but has some good editing tools, FREE
Lightroom: Lightroom version for Iphone, doesn’t have all tools but has several important ones like, temperature, highlights, saturation, and contrast to name a few. ALSO FREE
Facetune: Also a photoshop-like app that is most intended for physical appearance. Cost $3.99 but is worth it.
VSCO: This app is a filters app, it’s not too advanced but is good for people who want a certain filter. FREE
Snapseed: This app has a lot of tools to play around with, I have not messed with it too much yet. FREE