Aiko: On-device AI transcription app for Mac, iOS, and visionOS that converts lecture and meeting audio to text privately. Subvideo.ai: A browser-based AI subtitle generator that transcribes audio and video into time-coded captions, with in-browser editing, translation, and multi-format export. This comparison weighs them on pricing, features, and everyday workflow fit.
How Hosiqo compares and tests toolsFinal recommendation
Shortlist Aiko when transcribing recorded lectures into searchable text for studying matters most, and Subvideo.ai when generating and styling captions for videos with per-speaker formatting matters most. Try them side by side on real calls before deciding — needs vary by team.
On-device AI transcription app for Mac, iOS, and visionOS that converts lecture and meeting audio to text privately.
A browser-based AI subtitle generator that transcribes audio and video into time-coded captions, with in-browser editing, translation, and multi-format export.
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
Subvideo.ai is a browser-based AI subtitle and transcription tool that automatically converts uploaded audio and video into time-coded text. Users upload common formats (including MP4, MOV, MKV, MP3, and WAV), and the platform generates subtitle lines that can be refined in an integrated studio with a timeline view, where text and timing can be edited, lines split or merged, and captions previewed directly on the video. It supports speaker recognition to separate and style different speakers, and offers one-click translation across many languages while preserving timing. Outputs include SRT, VTT, ASS, TXT, DOCX, PDF, CSV, and JSON, as well as videos with burned-in (hard-coded) captions and XML exports for editors like Premiere, Final Cut Pro, and DaVinci Resolve. It is aimed primarily at video creators, educators, and agencies, but its audio support, speaker detection, and plain-text transcript exports also make it usable for transcribing interviews, podcasts, and recorded meetings. The platform offers a free tier with daily upload and file-length limits, plus a paid unlimited plan.
Best suited for
Aiko is a free tier with paid upgrades (freemium); Subvideo.ai is a free tier with paid upgrades (freemium). Always confirm current pricing on each vendor's site before buying.
| Feature | Aiko | Subvideo.ai |
|---|---|---|
| Core capability | Fully on-device transcription powered by a local Whisper model | Automatic AI speech-to-text transcription from audio and video files |
| Standout feature | Support for roughly 100 languages | In-browser subtitle editor with timeline view for adjusting text and timing |
| Team usage | Transcription of audio and video files in formats like m4a, wav, mp3, mp4, and mov | Speaker recognition to separate and style multiple speakers |
| Integrations | Export to multiple formats including JSON, CSV, and SRT subtitles | Multi-language translation that preserves timing |
| Languages & capture | Word-replacement feature to auto-correct common errors | Export to SRT, VTT, ASS, TXT, DOCX, PDF, CSV, and JSON plus burned-in captions |
| Best-fit workflow | Apple Shortcuts integration and Universal Purchase across Mac, iOS, and visionOS | XML exports for Premiere Pro, Final Cut Pro, and DaVinci Resolve |
Aiko
Choose Aiko if you need transcribing recorded lectures into searchable text for studying — strengths include strong privacy because nothing leaves the device.
Subvideo.ai
Choose Subvideo.ai if you need transcribing recorded interviews or podcasts into editable text and subtitle files — strengths include supports both audio and video input and exports editable plain-text transcripts (txt, docx, pdf).
Aiko
Subvideo.ai
It depends on your workflow. Aiko is strong for transcribing recorded lectures into searchable text for studying, while Subvideo.ai is strong for transcribing recorded interviews or podcasts into editable text and subtitle files. Both transcribe and summarize meetings.
Aiko is a free tier with paid upgrades and Subvideo.ai 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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