Applock is one the first software that my friend recommended me to have so that I can keep my data secured from anyone using my phone.
Mark my word it actually helped me a lot as I result I can easily give my phone to my friends, family and even annoying relatives without any tension of them browsing my personal stuff like whatsapp chat, emails or any other thing that I dont want to share with anyone.
With the help of App Lock you can even keep multiple password as a result your every software will have different lock, remembering them will be little bit hectic but then to its worth the efforts.
The secret walt feature where you can store your data where no one will be able to see it is just awesome it helps a lot. Only drawback of it is that once you enable power saving mode in your cellphone this app does not work at all.Overall its a nice application, I would recommend it to everyone to keep your data secured from unwanted people.