Haynoi

Push-to-talk dictation for macOS.
Hold a key, speak, release — your words appear in whatever app you're typing in.

Vietnamese-first, English-friendly. Powered by Kyma API.

haynoi.com · Download for macOS

Why Haynoi

Most dictation tools treat Vietnamese as an afterthought. Haynoi is built for the way Vietnamese people actually speak — tiếng Việt with English mixed in mid-sentence ("deadline", "deploy", "team marketing") — and keeps both languages intact instead of translating or mangling one of them.

• Speaks your language(s). Vietnamese-optimized speech-to-text that handles Vi/En code-switching, with a custom dictionary for names and jargon the model should never get wrong.
• Works in every app. Text is inserted directly where your cursor is — editor, browser, chat, terminal — via the Accessibility API, with clipboard fallback.
• Nothing to configure. Sign in once with a Kyma account (free credit on signup). No API keys to paste, no model menus to study.

How it works

Hold ⌥  →  speak  →  release  →  text appears

That's the whole product. A floating bar shows the waveform while you talk; a layered chord confirms start/stop.

Smart modes

Features

• Push-to-talk — hold the left ⌥ Option key (or ⌘ / ⌃ / fn), release to transcribe
• Language preference — auto-detect by default, or pin Tiếng Việt / English
• Your words are never lost — if the network fails mid-transcription, the recording is saved locally and retried with one click
• Survives real life — AirPods disconnecting mid-sentence, permission hiccups, and flaky Wi-Fi all degrade gracefully instead of eating your dictation
• Auto-paste into the active app, with clipboard fallback — and your previous clipboard is restored afterwards (dictated text is also hidden from clipboard managers)
• Living status orb — recording, transcribing, success, and error each have their own state, so you always know where your words are
• Custom dictionary — teach it names and terms once, it spells them right forever
• Snippets — say a trigger word, get expanded text
• Transcription history — searchable, stored locally, grouped by date
• Premium sound feedback — harmonic chords for start / stop / cancel / success
• Mute music — auto-pauses media while you dictate
• Silent auto-updates via Sparkle, launch at login, guided onboarding

Install

Download the latest Haynoi.dmg from haynoi.com or GitHub Releases, drag it to Applications, and open it. The app is signed and notarized — no security warnings, and updates install themselves.

Prefer building from source?

git clone https://github.com/sonpiaz/haynoi.git
cd haynoi
brew install xcodegen    # if not installed
make run

First run, either way:

1. The onboarding wizard walks you through Microphone and Accessibility permissions — that's all Haynoi needs
2. Sign in with your Kyma account — free credit on signup, nothing to paste
3. Hold the left ⌥ Option key, say something, release — the guided first dictation shows you the loop

Quality & cost

Haynoi defaults to the highest-accuracy tier and is transparent about what dictation costs:

_{*One push-to-talk utterance, billed per minute through Kyma. The free signup credit covers your first ~120 dictations.}

Switch tiers any time in Settings — it's one segmented control.

Privacy

• Audio goes only to Kyma API for transcription, then is discarded — nothing is stored server-side beyond standard request logs
• Your Kyma credential lives in the macOS Keychain
• Transcription history stays on your Mac
• No analytics, no tracking, no telemetry in the app

Development

make generate    # Generate Xcode project (XcodeGen)
make build       # Build via xcodebuild
make run         # Build and run
make clean       # Clean build artifacts

Sources/Haynoi/
├── App/
│   ├── HaynoiApp.swift           — App entry, menu bar, onboarding
│   ├── AppState.swift            — Shared state, transcription history
│   └── PipelineController.swift  — Hotkey → Record → Transcribe → Insert
├── Audio/
│   ├── AudioRecorder.swift       — 16kHz mono mic capture via AVAudioEngine
│   └── SoundFeedback.swift       — Harmonic chord audio cues
├── Auth/
│   ├── KymaAuth.swift            — OAuth 2.0 + PKCE sign-in to Kyma
│   └── KeychainStorage.swift     — Credential storage
├── Input/
│   ├── HotkeyManager.swift       — Global hotkey via NSEvent monitors (Accessibility)
│   └── TextInserter.swift        — AX API + clipboard text insertion
├── Transcription/
│   ├── STTProvider.swift         — Kyma transcription (quality / fast tiers)
│   └── TranscriptionMode.swift   — Normal / Clean / Email / Auto modes
├── Settings/
│   └── SettingsView.swift        — Account, quality, hotkey, dictionary
├── UI/                           — History list, main window, floating bar
└── System/                       — Launch at login, media control, usage stats

Tech stack

Related

• Pheme — AI meeting notes for macOS, Vietnamese-optimized
• kyma-dub — time-aligned AI video dubbing CLI
• Kapt — macOS screenshot tool with annotation & OCR

License

MIT — see LICENSE.

Built by Son Piaz · Powered by Kyma API