I had KYMS on my iphone, it worked great. However they do not have an app that is it's equal for the galaxy s4. I tried Vaulty. Big disappointment. The apps that are available all have bad reviews. Does anybody know of one that actually works? Where you can edit and delete photos and videos without trying to search how for an hour? I changed four iphones in my family for the galaxy and one ipad for the note 8. Did I make a mistake?