Aqua Voice: Aqua Voice is an AI-powered, system-wide voice dictation app that turns speech into refined text in real time across the apps you already use on Mac and iPhone. Koji: AI-native customer research platform whose AI interviewer runs voice and text discovery conversations at scale, then synthesizes themes automatically. 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 Aqua Voice when dictating emails, documents, and slack messages hands-free across desktop apps matters most, and Koji when building personas and validating early product concepts at scale matters most. Trial each on a few real meetings before you commit — the better fit usually shows fast.
Aqua Voice is an AI-powered, system-wide voice dictation app that turns speech into refined text in real time across the apps you already use on Mac and iPhone.
AI-native customer research platform whose AI interviewer runs voice and text discovery conversations at scale, then synthesizes themes automatically.
Aqua Voice is an AI dictation tool built by Aqua Voice, Inc. (a Y Combinator startup) that converts spoken words into written text in real time. Rather than a standalone transcription window, it works system-wide: users hold a key (such as Space) and speak, and the dictated text is inserted into whatever app is in focus, including Gmail, Google Docs, Slack, code editors, and AI chat tools. It runs on macOS and iOS, with the iPhone app now live. Aqua is powered by Avalon, the company's proprietary speech-to-text model trained on prompt-style speech, code, and email, and it refines grammar and phrasing as you talk. It supports context awareness of on-screen content, a custom dictionary for technical terms and names, natural-language editing commands ("make this a list," "rephrase that"), style adaptation, and multilingual input across dozens of languages. It is aimed at developers, knowledge workers, and content creators who want a faster alternative to typing for emails, documents, messages, prompts, and code.
Best suited for
Koji is an AI-native customer research platform built around an AI interviewer that conducts natural, in-depth conversations with research participants at scale, removing the need to schedule and moderate live discovery calls one at a time. Teams describe what they want to learn, and an AI research agent helps define goals and generate an interview guide. The AI then runs the interviews asynchronously in either a text chat or spoken voice format, asking adaptive follow-up questions and probing for depth as a human moderator would. Each completed conversation is analyzed automatically for key moments and sentiment, and findings are synthesized across all interviews into study-wide reports surfacing themes, patterns, and recommendations, with every insight traceable back to the participant quote that supports it rather than presented as a black-box summary. Koji is used for exploratory work such as discovery, persona development, and market strategy, as well as concept and messaging testing. The product is operated from Amsterdam with EU data residency and GDPR compliance, offers a freemium entry point, and integrates with tools including Claude, ChatGPT, Cursor, and Notion via an MCP server. Pricing varies by plan. Check the official website for current pricing.
Best suited for
Aqua Voice is a free tier with paid upgrades (freemium); Koji is a free tier with paid upgrades (freemium). Always confirm current pricing on each vendor's site before buying.
| Feature | Aqua Voice | Koji |
|---|---|---|
| Core capability | System-wide dictation that inserts text into any focused app (Gmail, Docs, Slack, code editors, AI chats) | Insights traceable back to specific participant quotes |
| Standout feature | Avalon proprietary speech-to-text model tuned for technical vocabulary, code, and prompt-style speech | AI interviewer that runs asynchronous voice and text discovery conversations at scale |
| Team usage | Custom dictionary for names, brands, and technical terms | AI research agent that drafts research goals and interview guides from a brief |
| Integrations | Natural-language editing commands like 'make this a list' or 'rephrase that' mid-dictation | Automatic per-interview analysis with key moments and sentiment |
| Languages & capture | Context awareness of on-screen content, including code syntax | Cross-interview synthesis into study-wide themes, patterns, and recommendations |
| Best-fit workflow | Multilingual input across dozens of languages | MCP integrations with Claude, ChatGPT, Cursor, and Notion |
Aqua Voice
Choose Aqua Voice if you need dictating emails, documents, and slack messages hands-free across desktop apps — strengths include low-friction, system-wide voice input that works inside existing apps with no per-app setup.
Koji
Choose Koji if you need running exploratory discovery interviews without scheduling live calls — strengths include removes scheduling overhead by running many interviews in parallel and asynchronously.
Aqua Voice
Koji
It depends on your workflow. Aqua Voice is strong for dictating emails, documents, and slack messages hands-free across desktop apps, while Koji is strong for running exploratory discovery interviews without scheduling live calls. Both transcribe and summarize meetings.
Aqua Voice is a free tier with paid upgrades and Koji 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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