Siperb Mobile Softphone vs Zoiper

Siperb Mobile Softphone puts an office phone extension on an iOS or Android device and connects it to an existing PBX or SIP system. It supports audio and video calls, attended and blind transfers, three-way conferencing, DTMF, call history, CDR, and buddy presence. Its listed end-to-end encryption uses TLS and DTLS-SRTP. When the app is backgrounded, locked, or restarted, Siperb’s proxy uses Apple APNs or Google FCM to wake it and deliver calls. Mobile devices must use Proxy Registration Mode, which is also required for push notifications. The same account works across web, Windows, macOS, Linux, iOS, and Android, sharing contacts, settings, and call history. Supported PBXs include Asterisk, FreePBX, FreeSWITCH, and SIP systems that can provision an extension. Personal is free; Business costs £2.00 per month per domain user, and Business Pro costs £5.00 per month per domain user.

Zoiper is a service-independent VoIP softphone for voice and video calls, messaging, presence, and fax. It runs on Android and iOS, as well as Windows, Mac, and Linux; use requires a computer or smartphone, an internet connection, and a VoIP provider or PBX. Listed calling tools include forwarding, attended and unattended transfers, auto-answer, recording, and SIP conferencing. Zoiper 5 PRO lists TLS, SRTP, and ZRTP encryption protocols for voice, video, and chat. Contact features include Outlook and macOS Address Book integration, LDAP contacts, CSV import, and click-to-dial CRM connections such as Vicidial, CallPro, Nimble, Freshdesk, and Salesforce. Zoiper describes a Banafo integration that transcribes VoIP call recordings and produces titles, summaries, classifications, and entity extraction. Zoiper 5 Free costs nothing for non-commercial use, with one account and two lines. Mobile team licensing costs €29.88 a year, billed annually, for teams of at least 10 users. Zoiper 5 PRO is $59.95, paid once, with a perpetual license per seat and operating system.