FaceApp lets users pick a photo from their gallery and can make them look decades older in a matter of minutes – talk about time catching up with you. The app also lets users see what they would look like if they were a few years younger as well.

Can I trust FaceApp?

So on the surface, it's not exactly privacy-friendly, but FaceApp doesn't appear to be a huge danger to your privacy. Even so, remember that handing your data over to any app is still a risk, and most do share it with third parties in some way.

What happens if you use FaceApp?

FaceApp uploads and processes our photos in the cloud, Goncharov said, but the app will “only upload a photo selected by a user for editing.” The rest of your camera roll stays on your phone. You can also use FaceApp without giving it your name or email — and 99 percent of users do just that, he said.