1) Is it different from the iPhone's security features? Why do you need it?
iPhone is a smartphone with the best security features. Fundamentally prevents external access.
However, if someone has access to your phone, primary security becomes useless.
It can be seen as a function for minimal temporary defense in secondary security. Although it is a temporary security feature, it will give you more peace of mind than not having it at all.
2) Who uses it?
Again, using this doesn't mean there's anything secretive about it. However, this function helps when you want to hide it temporarily.
3) What do the words privacy and Lock/Unlock mean?
The word privacy was used to protect personal information, and lock/unlock was used to mean hiding/showing files.
4) Why is it only available in English?
Since the file management function is a general essential function, basic English seemed to be sufficient.
5) Can I request additional features?
Please request it and we will review it.
6) Is there anything else I need to know?
Important files need to be stored in a separate storage device, and please remember the password when locking the file.
7) How do I file a bug report? Is there maintenance?
If you tell me the error, it will help me a lot. We perform continuous upgrades for errors and additional features.