VITO: VITO is a mobile app from ReturnZero that automatically transcribes recorded phone calls into searchable text with speaker labels and summaries, optimized for Korean. 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 VITO when reviewing and searching the content of past phone calls 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.
VITO is a mobile app from ReturnZero that automatically transcribes recorded phone calls into searchable text with speaker labels and summaries, optimized for Korean.
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.
VITO (비토) is a call-transcription app developed by ReturnZero Inc. (리턴제로), a Seoul-based speech-AI company. It automatically converts recorded phone calls into readable, chat-style text using ReturnZero's proprietary speech-recognition engine tuned for conversational Korean. Rather than joining live virtual meetings as a bot, VITO works from a phone's call-recording function: once a call is recorded, the audio is transcribed, with speaker identification distinguishing participants, and users can later read, keyword-search, replay specific segments, and review summaries of past conversations. It also supports bulk conversion of previously recorded calls. VITO is available on iOS and Android, with PC/web access to view transcripts, and offers cloud storage so call history is preserved across devices. The company also exposes its underlying RTZR speech-to-text technology as a separate developer API. VITO is aimed at everyday users and professionals such as real-estate agents, delivery drivers, office workers, students, and small-business owners who need to revisit, search, or share the content of their phone conversations.
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
VITO 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 | VITO | Zell |
|---|---|---|
| Core capability | Automatic speech-to-text transcription of recorded phone calls | Captures and analyzes video, phone, and in-person sales calls |
| Standout feature | Speaker identification across multi-party conversations | GDPR-compliant on-device transcription without a meeting bot or stored customer data |
| Team usage | Chat-style transcripts with keyword search and segment replay | Automated scorecards on talk patterns, objection handling, and discovery depth |
| Integrations | Call summaries and follow-up reminders | Instant AI call summaries after each conversation |
| Languages & capture | Bulk conversion of previously recorded calls | Skill-gap dashboard for managers across reps |
| Best-fit workflow | Cloud storage with PC/web access to transcripts across devices | AI coaching, personalized coaching plans, and roleplay simulations |
VITO
Choose VITO if you need reviewing and searching the content of past phone calls — strengths include strong korean speech recognition from returnzero's proprietary stt engine.
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.
VITO
Zell
It depends on your workflow. VITO is strong for reviewing and searching the content of past phone calls, while Zell is strong for analyzing real sales calls to score rep behaviors and identify skill gaps. Both transcribe and summarize meetings.
VITO 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.
You can — some teams pair them when each covers a different part of the meeting workflow.
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