Yes, there are apps available that allow users to listen to emergency services calls, including 911 calls. These apps serve as scanners, providing real-time access to emergency communications in certain jurisdictions or areas. However, it's important to note that the availability and legality of such apps may vary depending on the country, state, or region. Additionally, accessing and listening to emergency calls can be restricted to authorized personnel only, such as emergency responders and dispatchers, due to privacy and security concerns. Therefore, if you're interested in utilizing such an app, I recommend checking the specific regulations and recommendations within your jurisdiction to ensure compliance with local laws and ethical considerations.