74+ iOS apps curated and reviewed
PortSIP UC is the household name in portsip, but it's far from the only option. We track 74+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
This SIP-based softphone allows users to make and receive calls and instant messages over Wi-Fi or cellular data. It integrates with a PBX for push notifications and offers advanced call management features, including video conferencing. Security is a priority with encrypted signaling and audio.
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.
This app allows you to make high-quality voice and video calls over Wi-Fi or 3G using your PBX or VoIP provider. It offers features like call waiting, transfer, and recording, with background operation optimized for battery life. Easily configure accounts with a built-in QR code scanner.
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 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 provides high-definition voice and video calls, plus instant messaging, for users of a specific hosted PBX platform. It offers secure calling with TLS encryption and efficient low-bandwidth usage. Setup is simplified through QR code provisioning.
This application functions as a SIP-based softphone, enabling users to make and receive calls and instant messages over Wi-Fi or 4G/LTE connections. It provides a mobile solution for VoIP communication.
This app provides a feature-rich SIP VoIP softphone solution for making and receiving calls over 3G and WiFi. It supports video calls, SMS messaging, multiple accounts, and call recording, with advanced features like call forwarding and conferencing. Provisioning is made easy via QR code for IT managers and VoIP providers.
Make affordable international calls using your mobile device over Wi-Fi or 3G. Receive VoIP calls anywhere with push notifications or background mode support. This service is designed for iPhone, iPad, and iPod Touch.
Get a second phone number instantly through an app, without needing a new SIM card or device. Keep your personal and professional lives separate, protect your privacy, and make international calls at low costs. Manage calls, SMS, and voicemail all in one place.
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.
Make affordable international calls to any offline phone number worldwide using your existing number. The recipient does not need the app or internet. Send mobile top-ups to over 160 countries.
Transform your smartphone into a powerful business phone system. Make and receive calls using your company's Caller ID, record conversations, and manage voicemails from your email. Enjoy high-quality calls over Wi-Fi or cellular data without using your personal minutes.
Make affordable international calls to over 200 countries using Wi-Fi or mobile data. Enjoy free app-to-app calls, HD voice quality, and the option to display your caller ID. Earn free call credits through daily check-ins or watching videos.
This app offers a streamlined way to make calls, send texts, and send faxes. It provides connectivity solutions for businesses and managed service providers with a focus on speed and convenience.
Get global data plans, virtual phone numbers, and affordable international calls all in one app. Stay connected while traveling or manage multiple lines without a physical SIM. Protect your privacy with temporary numbers for online services.