Callabo: Korean AI meeting-notes service from Return Zero that records, transcribes, summarizes, and analyzes meetings for individuals and teams. Zell: Berlin-based sales performance intelligence platform that analyzes real sales calls, surfaces skill gaps, and delivers AI coaching and roleplays, using GDPR-compliant on-device transcription. The right pick comes down to team size, budget, and the workflows you want to automate.
How Hosiqo compares and tests toolsFinal recommendation
Shortlist Callabo when turning recurring internal team meetings into shareable summaries and action items matters most, and Zell when automating sales-manager coaching with personalized plans and ai roleplays matters most. Run both through a week of actual calls to see which suits your workflow.
Korean AI meeting-notes service from Return Zero that records, transcribes, summarizes, and analyzes meetings for individuals and teams.
Berlin-based sales performance intelligence platform that analyzes real sales calls, surfaces skill gaps, and delivers AI coaching and roleplays, using GDPR-compliant on-device transcription.
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
Zell is a Berlin-based AI platform that captures and analyzes real sales calls to give sales teams performance visibility and automated coaching. It works across video calls, phone calls, and in-person meetings, automatically evaluating call behaviors such as talk patterns, objection handling, and discovery depth, and producing scorecards and instant AI call summaries once conversations end. A skill-gaps dashboard helps managers see who is improving and where coaching is needed, while an AI coaching component (named Dave) generates personalized feedback, coaching plans, and roleplay simulations based on each rep's actual performance, then tracks improvement over time. Zell positions itself as a layer that turns conversation insights into action and automates much of the sales manager's manual coaching workload. As a European company founded in 2024, Zell emphasizes GDPR-compliant, on-device transcription that does not require a meeting bot or store customer data. The company has validated its model with clients across the US, Germany, Italy, and Spain and is backed by European pre-seed investors. It is a newer, privacy-focused alternative to large US conversation intelligence platforms. Pricing varies by plan. Check the official website for current pricing.
Best suited for
Callabo is a free tier with paid upgrades (freemium); Zell is a free tier with paid upgrades (freemium). Always confirm current pricing on each vendor's site before buying.
| Feature | Callabo | Zell |
|---|---|---|
| Core capability | Automatic recording and transcription for Google Meet, Teams, Zoom, and Webex | Captures and analyzes video, phone, and in-person sales calls |
| Standout feature | Paragraph summaries, key discussion points, and timestamped action items | GDPR-compliant on-device transcription without a meeting bot or stored customer data |
| Team usage | Automatic meeting-language detection for multilingual meetings | Automated scorecards on talk patterns, objection handling, and discovery depth |
| Integrations | AI chat to ask follow-up questions about a meeting | Instant AI call summaries after each conversation |
| Languages & capture | Integrations with calendars, CRM, messengers, and project tools | Skill-gap dashboard for managers across reps |
| Best-fit workflow | Enterprise security: permissions, 2FA, IP restrictions, and audit logs | AI coaching, personalized coaching plans, and roleplay simulations |
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.
Zell
Choose Zell if you need analyzing real sales calls to score rep behaviors and identify skill gaps — strengths include privacy-first design with on-device transcription suited to gdpr-conscious eu teams.
Callabo
Zell
It depends on your workflow. Callabo is strong for turning recurring internal team meetings into shareable summaries and action items, while Zell is strong for analyzing real sales calls to score rep behaviors and identify skill gaps. Both transcribe and summarize meetings.
Callabo is a free tier with paid upgrades and Zell is a free tier with paid upgrades. 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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