Aiko: On-device AI transcription app for Mac, iOS, and visionOS that converts lecture and meeting audio to text privately. 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. 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 Aiko when transcribing recorded lectures into searchable text for studying matters most, and VITO when capturing and sharing business call details for agents, sales, and small-business owners matters most. Run both through a week of actual calls to see which suits your workflow.
On-device AI transcription app for Mac, iOS, and visionOS that converts lecture and meeting audio to text privately.
VITO is a mobile app from ReturnZero that automatically transcribes recorded phone calls into searchable text with speaker labels and summaries, optimized for Korean.
Aiko is a native transcription app for macOS, iOS, and visionOS, developed by Sindre Sorhus, that converts speech to text from meetings, lectures, and recordings entirely on-device. It uses OpenAI's Whisper model running locally, so audio never leaves the user's device, which makes it appealing for students and professionals with privacy requirements. Aiko transcribes both audio and video files in common formats such as .m4a, .wav, .mp3, .mp4, and .mov, and supports around 100 languages. Transcriptions can be exported in multiple formats, including JSON, CSV, and SRT subtitles, and the app includes a word-replacement feature to automatically correct recurring errors. It also integrates with Apple Shortcuts for automation workflows. Because Aiko prioritizes accuracy over speed, it does not perform live transcription while recording and currently does not include speaker detection, so it is best for transcribing recorded lectures, interviews, and meetings after the fact. The app is offered as a Universal Purchase with a free trial via TestFlight, making it a low-cost, privacy-first option for turning lecture and meeting recordings into searchable text. Pricing varies by plan. Check the official website for current pricing.
Best suited for
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
Aiko is a free tier with paid upgrades (freemium); VITO is a free tier with paid upgrades (freemium). Always confirm current pricing on each vendor's site before buying.
| Feature | Aiko | VITO |
|---|---|---|
| Core capability | Fully on-device transcription powered by a local Whisper model | Automatic speech-to-text transcription of recorded phone calls |
| Standout feature | Support for roughly 100 languages | Speaker identification across multi-party conversations |
| Team usage | Transcription of audio and video files in formats like m4a, wav, mp3, mp4, and mov | Chat-style transcripts with keyword search and segment replay |
| Integrations | Export to multiple formats including JSON, CSV, and SRT subtitles | Call summaries and follow-up reminders |
| Languages & capture | Word-replacement feature to auto-correct common errors | Bulk conversion of previously recorded calls |
| Best-fit workflow | Apple Shortcuts integration and Universal Purchase across Mac, iOS, and visionOS | Cloud storage with PC/web access to transcripts across devices |
Aiko
Choose Aiko if you need transcribing recorded lectures into searchable text for studying — strengths include strong privacy because nothing leaves the device.
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.
Aiko
VITO
It depends on your workflow. Aiko is strong for transcribing recorded lectures into searchable text for studying, while VITO is strong for reviewing and searching the content of past phone calls. Both transcribe and summarize meetings.
Aiko is a free tier with paid upgrades and VITO is a free tier with paid upgrades. Check each vendor's pricing page for the latest plans and free-tier limits.
Sure. Running both makes sense when their strengths don't overlap and the budget allows.
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