Letterly

Letterly is an AI-powered voice-to-text app built by Anton Lebedev. It turns spoken words into clean, structured text within seconds. The tool solves a common problem: unorganized voice notes that require heavy manual editing.

Features

• AI Rewrite Engine: Offers 25+ built-in rewrite options. Users can also create custom prompts. Output styles include formal emails, bullet points, and social posts.
• Multilingual Transcription: Supports 90+ languages with auto-detection. Users can also manually set the speaker language. Recordings up to 90 minutes are supported.
• Third-Party Integrations: Sends notes to Google Docs and Notion via Zapier or custom webhooks. Notes also work as context inside Claude, ChatGPT, and Cursor.
• Cross-Platform Sync: Available on iOS, Android, macOS, and web. Notes sync automatically across all signed-in devices. Offline recording is supported; transcription runs after reconnecting.
• Audio File Upload: Users can upload existing audio files for transcription. Speaker identification labels multiple voices as Speaker 1, Speaker 2, and so on.

Use Cases

• For Content Creators: Record raw ideas by voice. AI rewrites them into social posts, blog drafts, or email newsletters in seconds.
• For Professionals in Meetings: Record live sessions up to 90 minutes. Get structured summaries and key action points right after the meeting ends.
• For Daily Journalers: Speak freely without typing. The app organizes thoughts into structured entries using headings and categories automatically.
• For Non-Native Language Users: Speak in any of 90+ supported languages. Built-in translation converts notes into a target language without leaving the app.

Letterly converts unstructured voice input into formatted, ready-to-use text using AI. It suits users who need fast transcription with light editing, though it lacks a public API for deeper custom integrations.