8. Private Photo Vault
This app is perfect for those who are conscious about who take a sneak peak at your photo roll. Having Private Photo Vault will keep you safe from the iCloud hacks that caused so much panic last year. Private Photo Vault has been developed by Legendary Software and it allows you to lock your photos and videos with a four digit pin code. You can choose which pictures to lock thereby letting people see only what you want them to see. There is also a Break-In function that automatically takes the picture of the person trying to get on your phone. It also tracks the GPS coordinates of the hacker, revealing the location from where the hack was initiated.