Hide Phone Number Contacts is an Android app developed by Dilip Master Apps that allows you to hide selected contacts from your phone book. With this app, you can keep your secret contacts secure and inaccessible to others. To use the app, you need to create a 4-digit password and select the contacts you want to hide.

Once you have secured your contacts, they will only be accessible from the "Secured" section of the app, which can only be opened with your password. You can also add new contacts directly to the secured list and access and call them without any fear of being seen by others. However, it is important to note that the app cannot hide call logs from secured contacts. A clear log button is provided in the app to clear all call logs.

Overall, Hide Phone Number Contacts is a useful app for anyone who wants to keep their secret contacts hidden and secure.