Prelto

Prelto is a macOS utility that adds a voice layer to whatever you are already looking at. Hold a button, speak, and it answers a question about your current selection, window or screen, so you can ask what an error means, request a simpler explanation or get a translation without ever opening a chat tab. Answers stream back in place, next to the content you are working on.

The second half of the product is dictation. Holding the key and talking produces polished text at your cursor, with speech recognition running locally on your Mac and automatic detection of 25 European languages. Where you want more than transcription, you can describe an intent such as "decline the request politely", review the draft card Prelto shows you, and confirm with the Return key before anything is inserted. Snippets cover the phrases you repeat all day, from your mailing address to your Calendly link.

The privacy model is deliberate. According to the site, context is captured only at the instant you press the key, with no ambient or background recording at any time. Answer generation and AI cleanup use your own AI provider account, so requests travel straight from your Mac to the provider you connect, and your API key is kept in the macOS Keychain. Prelto requires an Apple Silicon Mac (M1 or later) running macOS 15 or newer, and is free with no account needed.