Incoming Call Lock is a free Android application developed by JSK Sol that allows you to lock your incoming call screen with five different types of securities and various background themes. With this app, you can secure your incoming calls with pattern, pin, password, finger lock, and swipe type lock. It also enables you to reset the lock from the app and set one master password for all types of locks. You can change your forgotten lock with the right master password. Moreover, you can select one or multiple contacts to apply lock and edit the background theme for the lock screen. You can even preview the selected theme and security type.

The app requires permission to access the storage to get images from the device and perform operations. It also requires access to the phone state to get the status of any incoming call and access to contacts to read the contact number for selecting a particular contact to apply the lock. Overall, Incoming Call Lock is an excellent choice for those who want to secure their phone calls and enhance their privacy.