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ThinkTools

SoftPhone Pro

Multi-account SIP and IAX2 softphone for desktop, mobile and Raspberry Pi

  • Up to 64 accounts at once
  • SRTP and DTLS-SRTP encryption
  • Hand calls between your devices
  • 13 interface languages
  • Six platforms, one license
Buy from $50See pricing

One-time payment · Delivered as soon as payment confirms · No added fees

  • Android
  • Windows
  • macOS
  • iOS
  • Linux
  • Raspberry Pi

Screenshots

SoftPhone Pro in use

An active call on the desktop app1 / 7

Screenshot

Overview

About SoftPhone Pro

SoftPhone Pro is a business softphone for Windows, macOS, Linux, Android and iOS, including Raspberry Pi 4 and 5 on 64-bit Raspberry Pi OS. You register as many SIP or IAX2 accounts as you need, up to 64 at once, over UDP, TCP, TLS or WebSocket, and each account keeps its own codecs, transport, caller ID, ringtone and hold music.

Calls use HD codecs such as Opus and G.722, are encrypted with SRTP or DTLS-SRTP, and are cleaned up by on-device noise cancellation that works on your microphone and on noisy callers separately. You get blind and attended transfer, local conferencing, call park and pickup, a busy lamp field, voicemail badges, automatic recording by rule, and a musicbed that plays a track under your voice.

LAN Link connects your own devices on the same network. Pair them once with a six-digit code, then hand a live call from your desk to your phone, pull it back, make intercom calls, chat and drop files over an end-to-end encrypted link. Built-in diagnostics show MOS, jitter and packet loss for every call, a SIP ladder trace, and a network wizard that detects your NAT type and SIP ALG.

Ready-made templates cover Asterisk and FreePBX, 3CX, FreeSWITCH, Kamailio, Twilio, Telnyx, VoIP.ms and Vonage, and administrators can provision accounts with a link or a QR code. On Windows, macOS and Linux, a local automation API lets your CRM or helpdesk place calls and receive call events, and a browser extension turns phone numbers on web pages into click-to-call links.

Features

What it does

Run up to 64 SIP and IAX2 accounts at once, with encrypted calls, call recording, a live audio mixer and call handoff between your own devices.

  • Up to 64 accounts at once

    Register SIP and IAX2 accounts side by side over UDP, TCP, TLS 1.3 or WebSocket, with automatic DNS SRV transport and failover to a backup server.

  • Encrypted calls

    SRTP and DTLS-SRTP with a padlock on every call, TLS with certificate pinning, passwords in the OS keystore and optional AES-256 encryption of the local database.

  • Voice isolation

    On-device noise cancellation cleans up your microphone and the incoming audio separately, alongside echo cancellation and a tunable jitter buffer.

  • Musicbed and live mixer

    Loop an MP3 or WAV under your voice on every call, and balance microphone, speaker and music levels with live meters.

  • Recording by rule

    Record all, incoming, outgoing or per-contact calls as WAV, stereo WAV or Ogg Opus, then search, play back and export them from the Recordings page.

  • LAN Link call handoff

    Pair your devices once, then hand off or pull live calls, make intercom calls and send files over an end-to-end encrypted link.

  • Full call control

    Blind and attended transfer, N-way conference, call park, group pickup, busy lamp field, and do-not-disturb and forwarding synced to your PBX.

  • Diagnostics built in

    Live MOS, jitter and packet-loss charts, a SIP ladder trace viewer with .pcap export, and a network wizard for NAT and SIP ALG problems.

  • Automation API and click-to-dial

    Control calls from your CRM over a local HTTP API, and call any phone number on a web page with the browser extension.

Pricing

Choose what you need

Pay once in USD with crypto. Your download links and license key arrive by email as soon as the payment confirms.

All apps · lifetime

Popular

Installers for every platform, lifetime updates, one license.

$50

One-time payment · USD · no fees added

Buy now

What you get

  • Android, Windows, macOS, iOS, Linux and Raspberry Pi builds
  • Lifetime license key for all platforms
  • All future updates at no extra cost
  • Email support
  • Not included: Source code

Full source code

Best value

Everything in All apps, plus the complete source and build setup.

$299

One-time payment · USD · no fees added

Buy now

What you get

  • Everything in All apps · lifetime
  • Complete Flutter/Dart source code
  • Build scripts and native integrations for every platform
  • Use in your own products and client work
  • Priority email support

  • Instant delivery

    Download links and your license key by email as soon as payment confirms.

  • Free future updates

    Every future version at no extra cost, on your order page the day it ships.

  • Security reviewed

    Tested by our engineers and by AI-driven analysis before every release.

  • Pay with crypto

    The payment page shows the exact amount, the address and a QR code.

  • No added fees

    You pay exactly the listed price.

  • Support from real people

    Questions go to humans@thinktools.dev.

FAQ

Questions and answers

Can't find what you're looking for? See the store FAQ or write to humans@thinktools.dev.

What do I get with the All apps license?
Installers for Windows, macOS, Linux (amd64 and arm64, including Raspberry Pi), Android and iOS, one license key that covers every platform, and all future updates. The Full source code tier adds the complete Flutter and C source, build scripts and native integrations.
Which systems are supported?
Windows 10 and 11 (x64), macOS 11 or later on Apple Silicon and Intel, Ubuntu 22.04+, Debian 12+ and 64-bit Raspberry Pi OS Bookworm, Android 7 or later, and iOS 15.5 or later. The iOS app is installed by sideloading and receives calls while it is running.
Will it work with my phone system?
If your PBX or provider speaks SIP or IAX2, yes. Templates are included for Asterisk and FreePBX, 3CX, FreeSWITCH, Kamailio, Twilio, Telnyx, VoIP.ms, Vonage and WebRTC gateways, and Generic SIP covers the rest. Video calls and ZRTP are not supported yet.
How do updates work?
Every new release appears on your order page and works with the same license key. There is nothing extra to pay for updates.
Can I use the source code in client projects?
Yes, with the Full source code tier. You can modify the code and use it in your own products and client work. The Source License page lists exactly what is and is not allowed.
What if I need help or it does not fit my setup?
Write to humans@thinktools.dev and a person will help you get it running. For refund terms, see Refunds.