Calculator Lock is the best app for you to lock your app, hide sensitive videos, photos and contacts. The app looks like a real Calculator with no doubt

Main Features:

- App lock: Lock your private app with 4-digit number
- Vault: Encrypt your photo, video that you don’t want to share with other, just only you can view inside the app
- Private note & contact: keep your data secure
- Private browser: Make your history to be safe
- Intruder snapshot: Take picture when someone try to access your app without your permission