Alter: macOS-native AI meeting assistant that records and transcribes calls locally with built-in Whisper and Parakeet models, no bots required. Callabo: Korean AI meeting-notes service from Return Zero that records, transcribes, summarizes, and analyzes meetings for individuals and teams. We compare them on cost, capture approach, and day-to-day fit so you can choose faster.
How Hosiqo compares and tests toolsFinal recommendation
Shortlist Alter when freelancers and consultants privately capturing client calls without a visible bot matters most, and Callabo when logging sales and customer meetings into crm tools like salesforce or hubspot matters most. Trial each on a few real meetings before you commit — the better fit usually shows fast.
macOS-native AI meeting assistant that records and transcribes calls locally with built-in Whisper and Parakeet models, no bots required.
Korean AI meeting-notes service from Return Zero that records, transcribes, summarizes, and analyzes meetings for individuals and teams.
Alter is a native macOS application that records, transcribes, and analyzes meetings directly on the user's Mac without sending a bot into the call. Instead of joining a meeting as a visible participant, Alter captures audio from the system output and microphone, so it works across Zoom, Microsoft Teams, Google Meet, WhatsApp, FaceTime, Skype, Discord, and in-person conversations. Transcription runs through on-device models, with a choice of an optimized Parakeet model for major languages or Whisper for broader language coverage, and speaker identification is performed locally. Because processing happens on the device, recordings and transcripts stay on the Mac and the app can operate without an internet connection. Beyond raw transcripts, Alter generates summaries and action items, lets users chat with their meetings, and connects to tools such as Notion, Slack, Linear, Asana, and Jira. It targets solopreneurs, freelancers, consultants, and other professionals who want private, bot-free meeting capture on macOS. The product is actively developed and operating in 2025 and 2026. Pricing varies by plan. Check the official website for current pricing.
Best suited for
Callabo (콜라보) is an AI meeting assistant developed by Return Zero (리턴제로), a Korean speech-AI company. It automatically records, transcribes, summarizes, and analyzes business meetings for both individuals and enterprise teams, aiming to turn a one-hour meeting into organized notes with a single click and no complex setup. Callabo connects to online meetings on Google Meet, Microsoft Teams, Zoom, and Webex, and also supports recording in-person meetings. After a meeting it produces transcripts, paragraph summaries, key discussion points, and action items with timestamped source quotes, and it can automatically detect the meeting language to handle multilingual conversations. An AI chat feature lets users ask follow-up questions about a meeting beyond the generated insights. The service integrates with workflow tools including Google Calendar, Outlook, Salesforce, Pipedrive, HubSpot, Slack, Microsoft Teams, Zapier, Notion, Confluence, and Linear. For enterprises, Callabo provides meeting access controls, team and member permission management, original-media retention settings, two-factor authentication, IP access restrictions, and audit logs, and it holds ISO/IEC 27001 certification. Mobile apps are available for both iOS and Android. Pricing varies by plan. Check the official website for current pricing.
Best suited for
Alter is a free tier with paid upgrades (freemium); Callabo is a free tier with paid upgrades (freemium). Always confirm current pricing on each vendor's site before buying.
| Feature | Alter | Callabo |
|---|---|---|
| Core capability | On-device transcription using built-in Whisper and Parakeet models | Automatic recording and transcription for Google Meet, Teams, Zoom, and Webex |
| Standout feature | Bot-free capture of system audio and microphone across any meeting or call app | Paragraph summaries, key discussion points, and timestamped action items |
| Team usage | Automatic speaker identification performed locally | Automatic meeting-language detection for multilingual meetings |
| Integrations | AI summaries, action items, and chat-with-your-meeting Q&A | AI chat to ask follow-up questions about a meeting |
| Languages & capture | Integrations with Notion, Slack, Linear, Asana, Jira and other tools | Integrations with calendars, CRM, messengers, and project tools |
| Best-fit workflow | Offline operation with recordings and transcripts stored locally | Enterprise security: permissions, 2FA, IP restrictions, and audit logs |
Alter
Choose Alter if you need freelancers and consultants privately capturing client calls without a visible bot — strengths include local processing keeps recordings and transcripts on the user's own mac.
Callabo
Choose Callabo if you need turning recurring internal team meetings into shareable summaries and action items — strengths include serves both individual users and enterprise teams.
Alter
Callabo
It depends on your workflow. Alter is strong for freelancers and consultants privately capturing client calls without a visible bot, while Callabo is strong for turning recurring internal team meetings into shareable summaries and action items. Both transcribe and summarize meetings.
Alter is a free tier with paid upgrades and Callabo is a free tier with paid upgrades. Check each vendor's pricing page for the latest plans and free-tier limits.
You can — some teams pair them when each covers a different part of the meeting workflow.
More head-to-head comparisons involving Alter and Callabo.
Alter: macOS-native AI meeting assistant that records and transcribes calls locally with built-in Whisper and Parakeet models, no bots required. Amber Notes: EU-focused AI meeting notetaker by Dutch company Amberscript, with EU-only data hosting, multilingual transcription and an Ask Amber chat. The right pick comes down to team size, budget, and the workflows you want to automate.
Alter: macOS-native AI meeting assistant that records and transcribes calls locally with built-in Whisper and Parakeet models, no bots required. Amberscript: Audio and video to text service offering automatic and human-verified transcripts and subtitles. We compare them on cost, capture approach, and day-to-day fit so you can choose faster.
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Alter: macOS-native AI meeting assistant that records and transcribes calls locally with built-in Whisper and Parakeet models, no bots required. Attio Call Intelligence: Attio's native call intelligence records, transcribes, and summarizes meetings and syncs every conversation to the Attio CRM automatically. This comparison weighs them on pricing, features, and everyday workflow fit.
Alter: macOS-native AI meeting assistant that records and transcribes calls locally with built-in Whisper and Parakeet models, no bots required. AudioNotes: AI note taker for voice, audio, video, and text that records meetings and memos and turns them into structured notes and summaries. The right pick comes down to team size, budget, and the workflows you want to automate.
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Alter: macOS-native AI meeting assistant that records and transcribes calls locally with built-in Whisper and Parakeet models, no bots required. Audiosum: AI transcription platform with Arabic dialect support that transcribes and summarizes meetings, lectures and videos. Which one wins depends on your platform mix, budget, and how hands-off you want notes to be.