10+ similar apps compared and reviewed
Whether you want more options like Castel SIP or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.
This app allows you to make and receive internet phone calls using any SIP provider. It features a voice changer to alter your sound, send and receive chat messages, and integrates with your device's contacts. Enjoy background call reception and echo cancellation for clear communication.
This mobile SIP client integrates with cloud VoIP solutions, offering advanced call management and high-quality communication. It supports various codecs, multiple accounts, and secure calling features, with some premium functionalities available through in-app purchases.
This open-source application provides free audio and video calls, as well as text messaging, over the internet. It allows users to stay reachable at all times via WiFi or mobile data, even when the app is closed. Enjoy secure communication and the ability to connect with traditional phone lines.
This application functions as a SIP-based softphone, enabling users to make and receive calls and instant messages over Wi-Fi or cellular data. It integrates with a specific PBX system to support push notifications for incoming calls and messages, even when the app is not actively running.
This app is a SIP-based softphone for iPhone, enabling Wi-Fi or cellular calls and instant messaging. It integrates with your contacts for easy management and supports advanced call features like merging and transfers. Enjoy secure communication with encryption and high-definition audio and video.
Make affordable international calls to over 200 countries with crystal-clear voice quality. Save on phone bills with simple, one-tap dialing and a stable, high-quality calling experience. Ideal for staying connected with loved ones or for business needs.
