Where your words go

Everything stays on your Mac.

OFF
ON
Slide Casper over to CLOUD to see what you'd be giving up.
✓
Stays on your Mac
Audio and transcripts never touch a server. There is nothing out there to intercept.
✓
Works on a plane
Fully offline. No connection needed to dictate or transcribe a whole meeting.
✓
No tracking, no telemetry
No analytics SDK, no usage logs, no data sent off your Mac except a daily subscription ping.
✓
Instant — no round-trip
Text lands the moment you release the key. No upload, no waiting on a server.
100% on-device · nothing leaves your Mac

Input Casper turns speech into text — entirely on your machine. Hold a key, talk, release. No cloud, no accounts listening in. Just a quiet ghost in your menu bar.

Download for Mac

Everything happens here.

Six small things that add up to one calm, private dictation tool.

Hold a key to talk

Press your hotkey, speak, release. The text pastes straight into any field, in any app.

Meeting transcription

Record calls with notes, full transcript, and an AI summary — all saved as plain markdown.

100% on device

Models run on Apple Silicon. No audio or text is ever sent off your Mac. Period.

Smart cleanup

A local LLM trims filler words and resolves self-corrections so the paste reads clean.

Lives in the menu bar

No dock icon, no window clutter. It launches at login and waits quietly for your hotkey.

90+ languages

Whisper, Parakeet and Qwen models cover 90+ languages with on-device accuracy.

Privacy audit

Audited for silence.

Every core feature runs on your Mac. No audio, no text, no telemetry is ever sent to an external server.

✓
Speech-to-text
WhisperKit / FluidAudio on-device
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Text cleanup
Qwen LLM via LLM.swift, local
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Audio recording
AVAudioEngine, no streaming
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Meeting transcription
Chunked, markdown on disk
✓
Summary generation
Local LLM, no cloud API
✓
OCR & screen capture
Apple Vision framework
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Analytics & telemetry
Local-only counters

Pick your brain.

Open-source speech and cleanup models download once and cache locally. Trade speed for accuracy whenever you like.

Speech · default466 MB

Whisper small.en

Best accuracy for English dictation.

Speech · fastest75 MB

Whisper tiny.en

Snappiest option, English only.

Speech · multilingual1.4 GB

Parakeet v3

25 languages via FluidAudio.

Speech · multilingual900 MB

Qwen3-ASR 0.6B

90+ languages, macOS 15+.

Cleanup · default535 MB

Qwen 3.5 0.8B

Very fast cleanup, ~1–2s.

Pricing

Simple, honest pricing.

Try free for 24 hours. Then $1/month — cancel anytime.

$1/month
Billed monthly via Stripe · cancel anytime
✓Unlimited voice-to-text — 100% on-device
✓AI cleanup with local LLM models
✓Transcription history & screen context
✓No account required — just your email
✓1 Mac per subscription — transfer anytime
✓24-hour free trial included
or download and try free for 24 hours →
Input Casper

Bring your voice home.

One quiet menu-bar app. Your voice stays on your Mac. Just hold, talk, and paste.

Download for Mac
macOS 14.0+ · Apple Silicon (M1+) · $1/month · MIT licensed