Features
Diction is a voice keyboard for iPhone. One mic button. No QWERTY. Tap, speak, text appears. Here is everything it can do.
Context-Aware Text Editing
Diction reads the text around your cursor. When you dictate, the result fits naturally into what you are already writing. Correct capitalisation, punctuation, and tone. Select text and speak to replace it. Rewrite sentences, fix typos, or insert into the middle of a paragraph. All by voice.
AI Enhancement
Raw speech is messy. AI Enhancement removes filler words, fixes grammar, adds punctuation, and produces text that reads like you wrote it. Works together with context awareness to match the style and format of the surrounding text.
Three Ways to Transcribe
Pick the backend that fits how you work. Switch any time in settings.
On-Device . Speech models run locally on your iPhone. No internet required. Audio never leaves your device.
Self-Hosted . Run a Whisper server on your own hardware. One Docker Compose command. Free and unlimited.
Diction One Cloud . Frontier speech models, highest accuracy, zero setup. Includes AI Enhancement and context-aware dictation.
99 Languages
On-device, self-hosted, and cloud modes all support the full set. No extra downloads needed for cloud and self-hosted. Switch languages in settings.
Works in Every Text Field
Voice keyboards often break in unusual text fields. Terminals, code editors, browser inputs, search bars. Diction is built to work everywhere. If you can place a cursor in it, Diction can insert text into it.
No Word Limits
On-device and self-hosted modes have no word caps, no daily limits, no time restrictions. Talk for five seconds or five minutes. There is no meter running. Diction One cloud is unlimited for subscribers.
Privacy
The Diction app contains no analytics, no tracking code, and no telemetry. There is no data collection of any kind in the app.
On-device mode processes audio in memory and discards it immediately. Self-hosted mode sends audio only to your server. Diction One cloud processes and discards. Nothing is stored, nothing is used for training. The server infrastructure is open source.