Afterlight: This is probably my most used app. It's the easiest to navigate and has a whole host of extras such as frames and filters. I normally stick to the basic brightness and contrast on this app. I used to add a white border to the photo so that I could upload it portrait or landscape without cropping but Instagram have now changed that function is these alignments are allowed.
A Beautiful Mess: This app is great for creating collages and adding lots of cute things to your photos. In the ABM app you can add anything from arrows to quotes and text. I do find it's hard to adjust the size of the text if you wanted it small but for something big and bold it's awesome. I always use this app to create collages for IG as it's quick and easy.
Phonto: This app is for adding text to your photos. I prefer this to the ABM one as there is a bigger selection of free fonts to use. As with all the others it's really simple to use and user friendly.
VSCO Cam: This app is pretty nifty. It has an amazing selection of filters that you can adjust to your taste. Further to that you can sign up and share your photos with others that use the app. It's a bit like IG in the social aspect.
Adobe Lightroom: This is a programme I use on my Macbook. I don't tend to use Photoshop much and prefer the ease and cataloguing aspect of Lightroom. This app allows me to add my phone photos to the collection I have already. You can edit on this app but it's quite basic and a bit tricky to work around. This is definitely more for the backing up side of things!
What apps do you love for photos on your phone?