CallerID is a phone directory and call identifier application designed specifically for residents in Cuba. Developed by Tecso Solutions LLC, this app utilizes a locally distributed database to provide its functionality.

With CallerID, users can easily identify incoming calls and access a range of features. The app allows users to view their remaining internet package at any given time through a convenient widget. It also offers the ability to manage their Nauta account, connect and disconnect easily, search for information based on a phone number, name, or address, set reminders for birthdays, make calls, send messages, check various balances, and manage internet, voice, SMS, friends, and data plans, among other features.

It's important to note that while the application is developed by Tecso Solutions LLC, the responsibility for the use of the database lies solely with the user.