Yes, there is a mobile app available for managing Vonage Business services. The Vonage Business App provides users with the ability to manage their VoIP service directly from their mobile devices. Users can make and receive calls, access voicemail, and manage their contacts, among other features. This app is designed to enhance the user experience by offering flexibility and convenience for business communications. Additionally, it supports collaboration tools such as team messaging and video conferencing, making it easier for businesses to stay connected on the go. For more information on the app and its features, as well as download options, you may want to visit the official Vonage Business website.