Offline FileSecure: what a local encrypted vault means
A plain-English explanation of Offline FileSecure's local vault model and what it does, and does not, change about file safety.
Offline FileSecure is built around a simple idea: private files should not need to be uploaded to a server just to be organized and protected on your phone.
Key idea
A local vault is an intentional space on the device. You choose files through Android's file picker, the app creates protected copies in app-controlled storage, and the vault stays local by design.
What this means
The vault is not a cloud account. It does not sync files between devices or send documents to DK App Tools. The protected copies live on your Android device.
What encryption does
Vault files are stored as encrypted protected copies. Export is the point where you choose to create a usable copy outside the vault.
What it does not promise
A local vault cannot make a compromised device safe. It cannot control an exported copy after you move that copy into downloads, messages, email, or cloud backup. It also does not replace basic device security.
Offline FileSecure is local and offline by design, but the phone still matters. Use a strong screen lock, keep Android updated, and be careful about apps with broad file access.
Good habits around vault files
Use the vault for files you intentionally want to separate from normal storage. Review exported copies when you are done with them. Avoid sending passwords, recovery information, or private documents through casual channels unless you have a specific reason.
The main benefit is clarity: you can see what is in the vault, decide when to export, and keep the workflow local unless you choose otherwise.