Type less. AI text expander + voice for Windows, Mac & Linux.
Snippets expand as you type. Enhance text with AI Commands. Dictate everywhere with AI Speech.
14-day trial · Free AI credits to start · No credit card
Snippets, AI Commands & Voice — all in one app
Expand text as you type, rewrite anything with AI, or dictate by voice — without ever leaving the app you're in.
~72 seconds saved · ~240 keystrokesWe never record what you type
Lightning Assist turns your shortcuts into full messages in any app — and syncs your library across Windows, macOS, and Linux. Your keystrokes are never logged or sent to us.
Expand in any app, sync across all your computers — and never log a keystroke.
- Expands instantly in any app
- Syncs across Windows, macOS & Linux
- Your keystrokes are never recorded
Your snippet library, safe on every device
When your snippets sync, they're encrypted — stored as scrambled ciphertext, never plain text.
Encrypted in transit and at rest. In our database your snippets are stored as ciphertext — a breach exposes scrambled data, not your text.
Same expansion everywhere — pick where you type:
Below, each app has its own mini steps (type → expands → done).
Works the same in Outlook, Slack, VS Code, terminal, and anywhere you type.
Word-style documents — a short token becomes a full paragraph.
Works in Word, Google Docs, Pages, and other rich-text apps.
Chat — reply to someone in WhatsApp, Messenger, or Slack with a snippet.
Same flow in WhatsApp, Facebook Messenger, Slack, Teams chat, and more.
Editor or terminal — abbreviations become real code.
Works in VS Code, Cursor, JetBrains IDEs, terminal, and every editor.
Built-In AI That Actually Helps
Select text and rewrite it. Hold a key and dictate. Run custom AI prompts with a hotkey. No browser tabs, no copy-pasting into ChatGPT.
AI Commands
Rewrite, summarize or fix any text with one hotkey — no switching to ChatGPT, no copy-pasting.
- Custom hotkey triggers
- Ready-to-use AI prompts
- Real-time credit tracking
- Built-in AI chat interface
Voice Typing (Push-to-Talk)
Hold a hotkey, speak, release — your words appear instantly wherever your cursor is. Works in every app.
- Push-to-talk activation
- Real-time transcription
- Multiple transcription models
- Instant text insertion on release
AI Enhance
Select any text, press a hotkey and get it rewritten, cleaned up or rephrased — without leaving what you're working on.
- Grammar & style improvement
- Context-aware enhancement
- One-hotkey operation
- Seamless text replacement
Works in Gmail, Slack, Zendesk, Terminal & Any App
Create snippets for Gmail, Slack, Zendesk, Outlook, Word, Notion — any app on your desktop. Type a keyword and it expands inline as you type — no hotkey needed in the default As-You-Type Mode.
Need it in the terminal too? Lightning Assist has dedicated terminal snippets for PowerShell, Bash, CMD, and more.
- Easy to use
- Runs fast
- Highly stable
- Highly secure
- Works with many apps
- Quick Access Window
- Preview Snippet Window
- Multi-Platform


Browse the community snippet library for ready-made examples you can import in one click. Explore community snippets

Explore the product
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14-day free trial • All features included • No credit card required
Backed by a 14-day money-back guarantee.
Available for Windows, Mac & Linux. No credit card required.
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