
Description: Yet Another Call Blocker is an Android app that helps users block unwanted calls and text messages. It has features like blacklists, whitelists, call screening, and spam reporting to cut down on robocalls and telemarketers.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Truecaller is a caller ID and spam blocking app for mobile phones. It has a database of over 1 billion phone numbers and identities which it uses to provide caller name and spam detection services.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API