Email stunnapp.support@gmail.com and a real person reads it. Usually a reply within a day or two.
If you are reporting something that went wrong, these three things make it far easier to fix, and you do not need to know anything technical to answer them:
Any iPhone on iOS 16.4 or later, which means iPhone 8 and everything newer.
Into your Photos library, and also into an album called Stunn so you can find them quickly. If you declined photo library access when the app asked, Stunn cannot save anything. Turn it on in Settings, Stunn, Photos.
It should not, and if it does we want to know. Tell us which camera and we will look at that specific one.
Yes. Import an existing photo or video and run it through any of the cameras. Everything happens on your phone, and your original is never modified.
No. It has no network code at all. It works in a basement, on a plane, anywhere. See the privacy policy for what that means for your data, which is short, because the answer is that we collect none of it.
Send them. Requests for specific cameras are especially welcome. If you know the exact body you want reproduced, say which one, because that is how these get built.