DO PHOTO APPS LEAK YOUR PICTURES?

I use photo apps on my IPhone a lot to edit my pictures and frame them and things of that nature.
I was wondering do the pictures I edit in whatever photo app I'm using go onto the web or something, because it has to go SOMEWHERE (besides MY photo album)

Apps can be created by anyone in the know-how. Depending on the level of their mischievousness, they can guard the safety of your pictures or automatically do whatever they want with it without your knowledge at all. You can never know. The safest way to handle your photos is to keep them safe in your computer. Do not upload them to the internet, not even just to put some effects on it. You can do those safely with a graphics program like Gimp installed in your computer.

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