I'm not going to lie, I have become a bit of an instaddict of recent, and I've had a few comments on my Insta Week posts asking how I edit my photos. I like to try and give them a vintage/old photo effect:
The App In Question: I use Afterlight to edit my Instagram photos. I know a lot of people use VSCO which is free, but I downloaded it once and it confused my brain. I think Afterlight is much easier to use, definitely worth that 69p investment.
Brightness & Contrast: I always always brighten and enhance the contrast of my photos. Some don't need as much brightness and contrast added others, it's really your own judgement of how much you think it needs doing.
Filters: I only ever use either Russ, Leila or Horine (usually Horine) which are all under the Guest section. Sometimes I use two of these together, and I usually decrease the transparency to make the photo look less edited.
Overlay: Selecting the textures option will bring you to the dust and light overlays. I like to add a dusty texture, and the only one I ever use is 02, bringing the transparency slider down to around 80.
Grain: Scroll all the way to the end of the brightness and contrast section, and there is an option that lets you add grain. I always add grain, and I normally slide the transparency slider down to about 75.
And that is pretty much how I edit all of my insta photos. I think it gives a slight vintage/old photo effect to them, without looking like they've been over edited.