The uploaded photos are used for the purpose of recommending hairstyles
> We use the collected information to provide and improve our Service, including but not limited to face shape analysis and hairstyle recommendations.
Something like this really needs a robust privacy policy answering questions like:
- is my photo visible to you, the developer?
- will my photo ever be shown to other users?
- will my photo be used to train your recommendation algorithm?
- how long will my photo be retained for?