Well, I have a solution for you! I recently rediscovered Photobucket. I used this site a lot when I was younger to share photos and store them but now I use it for simple editing! If you love the look of lomography photos then you should try this site out for your editing. It is super simple and you can add fun frames. Not only can you use this site to store photos and edit but you can also order the photos that you upload and edit.
I took this photo with my Nikon P310 and edited it using Photobucket. I really like the way it turned out! I put a filter over top of the photo and also added a vignette. I think this is a great site!