Calculator Private Vault

Keep selected photo copies and personal notes behind a fully working calculator. Calculator Private Vault uses a separate 4–8 digit PIN and an intentional press-and-hold gesture, so ordinary calculations are never mistaken for unlock attempts.

Import one or more photos to create copies inside private app storage. Your gallery originals stay where they are and are never deleted automatically. Notes and PIN metadata use the operating system’s secure storage.

Highlights:
• Working calculator for everyday arithmetic
• Separate hold-to-unlock vault gesture
• Private, device-local photo copies
• Notes stored with operating-system secure storage
• Failed vault-unlock history
• Change PIN and optional decoy error screen
• Permanent erase control for vault content
• No ads, account or cloud upload

Important: there is no PIN recovery or cloud backup. Uninstalling the app, clearing app data, losing the device or erasing vault content may permanently remove private copies and notes. Keep important originals or backups somewhere you control.