Blacking out with a drawing tool is not redaction — the text often survives underneath. Remove it properly.
Finds private details in a file and masks them on device before you share.
Free to download; one-time lifetime unlock.
在 App Store 下载 →Scan paper to PDF locally, so the source never touches a server.
Free to download; one-time lifetime unlock.
在 App Store 下载 →No, a masked copy is produced.
No. The work happens on device.