How to transfer photos from my Iphone?

I have a bunch of photos on my Iphone that I would like to save because I have to reset my whole Iphone. Is there any app that I can use to keep my photos in and then download the app after I reset my phone and my photos will be there? Possibly videos too?

I don't know any apps that do that. You should sync your photos with itunes or email all the photos and videos to yourself. Or you could download filesharing apps like DropBox or Google Drive and send all your photos there. I'm not really sure of any other way.

Depending on the amount of photos, and the os on the iphone you can use iCloud to back up your iphone. You get 5gb free and you can store anything really, you can buy more space if you need it, to check how much space in photos and vids you used go to settings then genral then usage and it will tell you. If you want more in depth about iCloud just google it or go on the apple website

If your iPhone is jailbroken, you can use iTool or iFunbox to copy photos from iPhone back to computer, they are free and safe.