Buzz: Popular open-source desktop app that transcribes and translates audio offline on your own computer using OpenAI's Whisper. Invoca: Invoca is an AI conversation intelligence and call tracking platform that records, transcribes, and analyzes inbound phone calls to connect them to marketing and sales outcomes. Below, they line up on price, capture method, and how each fits a real meeting stack.
How Hosiqo compares and tests toolsFinal recommendation
Shortlist Buzz when transcribing recorded meetings, interviews, podcasts, or lectures offline matters most, and Invoca when contact centers analyzing and coaching agents to improve call close rates matters most. Run both through a week of actual calls to see which suits your workflow.
Popular open-source desktop app that transcribes and translates audio offline on your own computer using OpenAI's Whisper.
Invoca is an AI conversation intelligence and call tracking platform that records, transcribes, and analyzes inbound phone calls to connect them to marketing and sales outcomes.
Buzz is a widely used open-source desktop application that transcribes and translates audio offline on the user's personal computer, powered by OpenAI's Whisper. It is MIT-licensed and actively maintained, with v1.4.4 released in March 2026, and it has grown a large community with roughly 19.7k GitHub stars. Buzz runs on macOS, Windows, and Linux, with installation options including Flatpak, Snap, and PyPI. It supports both importing existing audio and video files and real-time transcription from microphone input, and it can export results in formats such as TXT, SRT, and VTT for subtitling and documentation. The app includes an advanced transcript viewer with search and playback controls, a watch folder for automatically transcribing new files, and a command-line interface for automation. It offers GPU acceleration through CUDA for Nvidia cards, Apple Silicon support, and Vulkan for many other GPUs, which makes faster transcription practical even on laptops. Buzz also provides speaker identification and speech separation for noisy audio, plus a plugin system that adds capabilities like AI-generated summaries. Because all processing happens locally, recordings and transcripts remain on the user's machine rather than being uploaded to a cloud service. Pricing varies by plan. Check the official website for current pricing.
Best suited for
Invoca is an enterprise conversation intelligence and call tracking platform built for marketing teams, contact centers, and revenue/engagement teams. Using dynamic number insertion, it attributes inbound phone calls back to the specific campaigns, keywords, and ad interactions that drove them, then layers AI-powered analysis on top of that attribution data. Calls are captured, recorded, and transcribed into searchable text, and Invoca's Signal AI suite analyzes the conversations to surface insights, detect outcomes, and score agent performance against custom KPIs. Its Signal AI Studio lets users build custom no-code AI models that detect the specific moments they care about, such as new leads or appointment confirmations. The platform also separates caller and agent sentiment, integrates with ad platforms, CRMs, and contact center software, and offers voice and SMS AI agents for engaging and routing leads. It is aimed at industries with high-value phone interactions, including automotive, insurance, healthcare, financial services, retail, telecom, and home services.
Best suited for
Buzz is a free tier with paid upgrades (freemium); Invoca is custom pricing (contact sales). Always confirm current pricing on each vendor's site before buying.
| Feature | Buzz | Invoca |
|---|---|---|
| Core capability | Offline transcription and translation using OpenAI's Whisper | Call tracking and marketing attribution via dynamic number insertion (DNI) |
| Standout feature | Real-time transcription from microphone input | Call recording and AI-powered transcription into searchable text |
| Team usage | Speaker identification and speech separation for noisy audio | Signal AI conversation analytics that analyzes calls to detect outcomes and surface insights |
| Integrations | Exports to TXT, SRT, and VTT | Signal AI Studio for building custom no-code AI models trained on your own calls |
| Languages & capture | Watch folder for automatic transcription and a command-line interface | Separate caller and agent sentiment analysis plus agent performance scoring |
| Best-fit workflow | GPU acceleration via CUDA, Apple Silicon, and Vulkan | Integrations with ad platforms, CRMs, and contact center software |
Buzz
Choose Buzz if you need transcribing recorded meetings, interviews, podcasts, or lectures offline — strengths include fully offline so audio and transcripts stay on the user's computer.
Invoca
Choose Invoca if you need marketing teams measuring which campaigns and keywords drive revenue-generating phone calls — strengths include combines marketing attribution with conversation intelligence in one platform, tying calls to revenue.
Buzz
Invoca
It depends on your workflow. Buzz is strong for transcribing recorded meetings, interviews, podcasts, or lectures offline, while Invoca is strong for marketing teams measuring which campaigns and keywords drive revenue-generating phone calls. Both transcribe and summarize meetings.
Buzz is a free tier with paid upgrades and Invoca is custom pricing. Check each vendor's pricing page for the latest plans and free-tier limits.
Yes. Many teams run more than one meeting assistant when the workflows are complementary.
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