WaveKat Voice is a desktop softphone that connects to your Zadarma account over SIP and records and transcribes every call automatically, on your own computer. It runs on Mac, Windows and Linux, it is free during the public beta, and there is no monthly subscription — so your Zadarma number rings on your desktop with every conversation written down, without buying speech-recognition minutes. A call flow can answer the Zadarma calls you cannot take, with a greeting and voicemail, and every call can log itself in your HubSpot CRM.
Zadarma is in WaveKat Voice’s guided provider list, so you don’t hand-edit SIP fields — you pick Zadarma and enter your SIP number and password from your Zadarma personal account.
Prefer to enter it by hand? A Zadarma SIP number signs in to sip.zadarma.com over UDP on port 5060; an extension of the Zadarma cloud phone system signs in to pbx.zadarma.com. If your network blocks internet calls, Zadarma also accepts encrypted TLS connections on port 5061 — set Connection to TLS and Port to 5061 under Advanced. Pick Zadarma in WaveKat Voice and the domain is filled in for you.
Setup details and prices checked in September 2026 against the provider’s own pages: Zadarma setup instructions · Zadarma plans
| WaveKat Voice | Zadarma app | Zoiper 5 | |
|---|---|---|---|
| Price | Free during the public beta; paid later. | Free with a Zadarma account; you pay Zadarma for numbers and outgoing calls. | Free for non-commercial use; Premium is $11.11 on desktop, €7.99 on Android and $4.99 on iOS (as of September 2026). |
| Platforms | Mac, Windows and Linux (the Windows build ships via the Microsoft Store). | Windows, macOS, iOS and Android, plus calls in the browser and a Chrome extension. No Linux app. | Windows, Mac, Linux, Android and iOS. |
| Records every call | Automatic — every call recorded on your computer the moment you hang up. | Recorded in Zadarma’s cloud phone system and playable in the app; the free plan stores 200 MB, about 14 hours (as of September 2026). | Per call, or all calls with a setting; saved to a folder on your computer. |
| Written transcript | Live transcript, kept with the recording. | Zadarma’s speech recognition uses minutes from a paid plan; the free plan includes none (as of September 2026). | Not in the softphone — Zoiper offers a separate app, Zoiper Scribe, for transcripts. |
| Searchable call history | Calls, recordings, and transcripts in one searchable history. | Call history in the app; recordings and statistics in your Zadarma account. | Call log; recordings as files in a folder. |
| Zadarma setup | Pick Zadarma from a list; enter your SIP number and password. | Sign in with your SIP number or extension and password. | Enter the generic SIP fields yourself (Zadarma publishes a Zoiper guide). |
| Answering calls & voicemail | A call flow answers for you — greeting, opening hours, menu, voicemail or transfer — and the message is transcribed. | Zadarma’s cloud phone system answers — voice menus, voicemail and an AI voice agent, set up in your Zadarma account. | No answering of its own — whatever you set up in Zadarma takes the call. |
| Logging calls in your CRM | Connect HubSpot once and every call files itself on the matching contact, transcript included. Part of Pro, free during early access. | Zadarma’s cloud phone system has free integrations with HubSpot, Pipedrive, Zoho and others, and its own Teamsale CRM. | No CRM logging; Premium adds contacts from Outlook, LDAP and your computer’s address book. |
| Mobile & push notifications | Desktop only — no phone app or mobile push. | iOS and Android apps with push notifications. | Android and iOS apps. |
Zadarma is an international VoIP provider with phone numbers in many countries and a free cloud phone system. Every account gets a SIP number, and Zadarma’s own free app covers Windows, macOS, iOS and Android, with calls in the browser too — and because your account is standard SIP, any SIP softphone can register with it.
Yes. WaveKat Voice is a SIP softphone and Zadarma is in its guided provider list, so you pick Zadarma, enter your SIP number and SIP password, and it registers — no manual SIP configuration. It works on Mac, Windows and Linux, and every call is recorded and transcribed automatically.
In WaveKat Voice, add an account, pick Zadarma from the provider list, and enter your SIP number (like 123456) and its password from Settings → SIP connection in your Zadarma personal account. The domain, sip.zadarma.com, is filled in for you. Then call 4444, Zadarma’s call-quality test, to check your audio.
Extensions of the Zadarma cloud phone system (logins like 1234-100) sign in to pbx.zadarma.com, not sip.zadarma.com. Change the domain to pbx.zadarma.com and use the password from the phone system’s extensions page, not your SIP number’s password.
Some offices and countries block ordinary SIP traffic. Zadarma accepts encrypted TLS connections on port 5061, so set Connection to TLS and Port to 5061 under Advanced in WaveKat Voice. TLS encrypts the sign-in and call setup; WaveKat Voice does not encrypt the call audio itself (SRTP) yet.
If you want a subscription-free desktop softphone for Zadarma that records and transcribes every call on your own computer, WaveKat Voice is built for that on Mac, Windows and Linux. Zadarma’s free app is the pick for iPhone and Android and has no Linux version; Zoiper runs everywhere but is free only for non-commercial use.
The Zadarma app is free with a Zadarma account. Call recordings are stored in Zadarma’s cloud phone system — 200 MB, about 14 hours, on the free plan — and speech recognition uses minutes that come with Zadarma’s paid plans (as of September 2026). WaveKat Voice records and transcribes on your computer instead, free during its public beta.
Zadarma’s own app covers Windows, macOS, iOS and Android, but not Linux. WaveKat Voice runs on Linux as well as Mac and Windows, and Zadarma is in its guided provider list. Zoiper also has a Linux version.
No — WaveKat Voice is a desktop app for Mac, Windows and Linux and doesn’t run on phones, so it can’t deliver mobile push notifications. For incoming Zadarma calls on an iPhone or Android, use the Zadarma app. On the desktop, WaveKat Voice stays registered and rings while the app is open.
Yes. WaveKat Voice runs on Windows 10 and 11 from the Microsoft Store — one listing carrying both the Intel/AMD (x64) and the ARM64 package — and Zadarma is in its guided provider list. Direct .exe installers are available too; those are not code-signed yet, so Windows warns about an unknown publisher on first launch, while the Store package is signed by Microsoft. Zadarma’s own Windows app and Zoiper are the other Windows options.
Yes. A call flow answers the line for you with a greeting, checks your opening hours, offers a phone menu, takes a message, or transfers the call — and the message is recorded and transcribed like any other call, so you can read it instead of listening back. You can also pick the call up while someone is still leaving one. The greeting, taking a message and ringing you are free; phone menus, opening hours and transfers are part of Pro, free for a year during early access. The flow runs on your own computer, so the app has to be running for it to answer — otherwise the call goes to whatever you set up in Zadarma, such as its voicemail.
Yes. Connect your HubSpot account once and every Zadarma call you take or place files itself on the matching contact, with the time, direction, outcome, duration, transcript, and a recording you can play inside HubSpot. It is a Pro feature, free during early access, and webhooks cover any other CRM. Zadarma’s cloud phone system also has its own free HubSpot integration.
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