Sixthly
← Back to blog
·Sixthly Team

How Sixthly Keeps Your Conversations Private

privacyarchitecture

Your meetings contain some of the most sensitive information in your business. Salary negotiations. Client pricing discussions. Investor updates. Partnership terms.

Every major meeting tool sends this audio to cloud servers for processing. Fireflies, Otter, Fathom, Read.ai... they all require your audio to leave your device.

We built Sixthly differently.

On-device transcription

Sixthly uses Parakeet TDT, a speech-to-text model that runs entirely on your Mac. No cloud API calls. No audio uploads. The model runs locally using your Mac's neural engine.

The result: your words are transcribed in real-time without ever leaving your device. Not even temporarily. Not even encrypted. The audio data physically stays on your hardware.

Local AI analysis

The transcribed text is analyzed by AI models for coaching suggestions. But here's the key: you bring your own API key via OpenRouter. You choose which model to use (Claude, GPT, Gemini). You control the relationship with the AI provider directly.

Sixthly sends only the text segments needed for coaching. Never the full transcript. Never the audio. And you can see exactly what's sent in the app's activity log.

Local storage

Meeting transcripts, coaching suggestions, contact personas, and rapport scores are all stored in SQLite and LanceDB databases on your Mac. Not in our cloud. Not in a shared database. On your filesystem, encrypted by macOS FileVault.

You can export or delete your data at any time. When you delete a session, it's gone from your disk. There's no cloud backup to worry about.

Why this matters for SMB owners

If you're a small business owner, your meetings ARE your business. The sales call where you close a deal. The interview where you hire your next key employee. The investor meeting where you pitch for funding.

These conversations deserve the same protection as your financial records. Sixthly gives them that protection by keeping everything local.

Download Sixthly and see for yourself. Your first coached meeting is private by default.