On-Device Transcription

Your voice stays on your phone. On-device mode runs speech models locally on your iPhone. No internet, no servers, no data leaving your device. Ever.

Download a model once and dictate anywhere. On a plane, in the underground, in a country with no signal. It works.

How It Works

1. Download a speech model in the Diction app (one-time, happens automatically on first launch).
2. Switch to the Diction keyboard in any text field.
3. Tap the mic and speak. Transcription happens on your iPhone.
4. Text is inserted. Audio is discarded from memory. Nothing is saved.

No account required. No internet required. No setup beyond the initial download.

What You Get

• Complete privacy: audio is processed in memory and discarded immediately. Nothing is transmitted anywhere.
• Works offline: no Wi-Fi, no cellular, no connection of any kind needed.
• Multilingual: most on-device models support 99 languages. Switch languages in settings.
• Two free models: Standard and Advanced on-device models are free with no word limits, no daily caps, no restrictions.
• Premium model: highest accuracy model available with a Diction One subscription. See pricing in the app.

Best For

• You want your voice to never leave your device. Full stop.
• Offline dictation: flights, commutes, remote areas, anywhere with no signal
• Quick notes and messages where speed matters more than peak accuracy
• You want speech-to-text that works without depending on anyone else's server