FaceApp, the app that uses advanced software algorithms to transform selfies and make people virtually look older or younger than their actual age, has suddenly become a household name, once again. Chances are high that you might have already seen your friends or colleagues sharing old-age filter versions of their self-portraits using this artificial intelligence (AI) app. Several celebrities have also shared their older-looks created using the app on social media. But there are some mysterious terms of use that you should clearly read and understand before getting started with FaceApp.

One of the reasons that have helped FaceApp become popular is the accuracy with which it edits selfies and make people look older or younger. The app, which is available for download on Android and iOS devices, applies filters to change your age or gender or add a smile to your selfie. But to begin with the editing process, the app uploads photos to its servers. This is where the things become tricky.

As spotted by Twitter user Elizabeth Potts Weinstein, FaceApp’s terms of use mention that if you use the app, you’re granting its developers right to use your content, including your selfies, name, likeness, voice, and persona, for commercial purposes.