Calculator+ / Vault Apps
Significant RiskThese apps appear to be innocent utilities (calculators, note apps, etc.) but contain hidden vaults for storing photos, videos, messages, and even secret browsers. Children use them to hide content from parents. The existence of such an app on a child's device is itself a red flag.
Consider removing or heavily restricting this app.
Documented Incidents
SextortionSep 2019
Vault Apps Flagged Alongside FBI Sextortion Warning
Reporting on an FBI agent's warning about sextortion, Hawaii News Now advised parents to watch for vault apps that hide photos and videos and for secret apps disguised as calculators.
Source: Hawaii News NowApp Information
Age Rating
4+Platforms
iOSAndroid
Checked October 2026
Key Risks
- •Hides photos/videos from parents
- •Secret messaging capabilities
- •Hidden web browsers
- •Indicates child is hiding something
- •May contain inappropriate content received from others
- •Contents stay hidden without the passcode
Warning Signs
- •Multiple calculator apps installed
- •Calculator app requires password
- •Utilities that seem unnecessary
- •Child defensive about certain 'boring' apps
What Parents Can Do
- ✓Check for duplicate utility apps
- ✓Try opening calculator apps - do they ask for passwords?
- ✓Search app stores for 'vault' or 'secret' apps
- ✓Have conversation about why child feels need to hide things
- ✓Remove vault apps when found
Safer Alternatives
- →Open communication about privacy expectations