Your thoughts, perfectly written Without typing a word
Dictate your thoughts directly into any app, or select text to open the AI panel. Use them independently to rewrite, summarize, or translate completely offline.
Hi Sarah,
I just wanted to follow up on the project. Let me know if you need anything from my end.
Best,
Alex
Everything you need. In one native app.
Whether you're typing an email or dictating a roadmap, SwiftPen adapts to your workflow with powerful, on-device AI.
Speech to Text
Skip the keyboard. Dictate your thoughts with near-perfect accuracy and let SwiftPen format them instantly.
Custom Modes
Create personalized prompts for any use case.
Instant Rewrite
Select text in any app, hit configured shortcut key, and watch your draft transform instantly. Review the diff before replacing.
hey sorry im running late traffic is crazy be there in 10
Hi! I apologize, but I'm running about 10 minutes late due to heavy traffic. See you soon!
Speak, preview, replace
Dictate thoughts or select text in any app, preview the result, and swap it in if it looks right.
Speak or select
Dictate raw thoughts, or highlight existing text in any macOS application.
Summon the AI
Hit your custom keyboard shortcut to pull up the SwiftPen panel.
Preview and replace
Review the transcription or AI rewrite, and swap it in instantly.
Why not ChatGPT or Grammarly?
ChatGPT is great when you want to start from scratch. SwiftPen is for the text already in front of you. Grammarly polishes. SwiftPen lets you dictate, fully rewrite, use custom prompts, and run natively offline on macOS.
The smartest way to write on your Mac
Dictate thoughts, rewrite text, and transcribe files. SwiftPen supercharges your workflow without compromising privacy.
Works across apps
Slack, Mail, Notes, Safari, Chrome. If you can type in it, SwiftPen works seamlessly.
Dictate & Transcribe
Talk to your Mac to type instantly, or transcribe audio files directly into text.
Multiple Local Models
Choose from various lightweight LLM and STT models for the perfect balance of speed and quality.
Local History
Access all your past rewrites, dictations, and transcriptions anytime. Stored safely on your device.
Fast & Flexible
Highly configurable and lightning fast. Use shortcuts to keep your hands on the keyboard without breaking flow.
100% Private & Offline
No cloud processing. Everything runs securely on your Mac, even without an internet connection.
Your data stays on your Mac.
100% private, 100% local.
SwiftPen is designed to be a utility, not a data vacuum. It only processes the voice and text you explicitly provide. There is no background keylogging, no screen recording, and no continuous monitoring.
On-demand workflow. Nothing happens until you highlight text or activate the dictation shortcut.
Local models available. Choose to run lightweight models entirely on your Mac.
No training on your data. SwiftPen does not use your text to train future AI models.
Universal Compatibility
Because SwiftPen uses native macOS accessibility APIs, it works almost everywhere you can type.
More than just rewriting.
SwiftPen is a complete, private AI powerhouse running directly on your Mac.
On-device chatbot
SwiftPen may expand into local workflows for questions, brainstorming, and quick answers on your Mac.
Here are the key takeaways:
- Revenue grew by 14% YoY.
- Customer retention hit an all-time high of 92%.
- The new sync engine rollout was successful.
Save prompts for the rewrites you use most.
Create custom rewrite modes with specific prompts. Save them once, then reuse them in one click.
Speak your mind. Let AI type it.
Skip the keyboard. Use our advanced, on-device speech-to-text to dictate your thoughts with incredible accuracy. Paste the transcription directly into any app, or pull it into the SwiftPen panel to instantly rewrite, polish, and format your raw thoughts into perfect prose.
"So I was thinking we should probably update the landing page to include the new voice dictation feature. It allows users to just speak instead of typing..."
Your AI Keyboard,
Anywhere.
The seamless AI experience you love on macOS is coming to iOS and Android as a custom keyboard. Rewrite, polish, and translate text directly inside any app.
Price increases after 99 more users
SwiftPen
Download SwiftPen first, then choose monthly, yearly, or lifetime when you are ready to upgrade
- On-device AI improvements
- On-device model support (100% private)
- Works in all macOS apps
- Custom instructions & prompts
- Preview before replacing
- Custom keyboard shortcuts
Requires macOS 13.0 or later.
Frequently asked questions
The practical questions people ask before they try it.
Which apps does it work in?
SwiftPen works system-wide in any app where you can type or select text, including email, browsers, docs, and chat apps.
Does it support dictation?
Yes. You can dictate your thoughts directly into any app using the floating widget, or transcribe saved audio files to text.
What AI models does it use?
SwiftPen lets you choose from multiple lightweight, highly optimized local LLM and STT (Speech-to-Text) models to balance speed and accuracy.
Can I see my past edits?
Yes. SwiftPen maintains a secure, local history of all your rewrites, dictations, and file transcriptions so you never lose your work.
Does it work offline?
Yes. Everything runs natively on your Mac. All rewriting, dictation, and transcription happens locally, so you don't need an internet connection.
Is my data private?
100% private. Nothing runs in the background and no data is sent to the cloud. Your text, voice, and history stay safely on your device.
Can I create custom modes?
Yes. You can write custom prompts, save them as reusable modes, and apply them instantly with a single click.
How much does SwiftPen cost?
SwiftPen includes a 7-day free trial. After that, you can choose between monthly subscription or lifetime billing options.
Rewrite text without leaving the app.
Select text anywhere on your Mac, improve it in place, and stay in flow. Start your 7-day free trial, then choose monthly or lifetime billing if you want custom prompts and deeper control over the on-device model.
Requires macOS 13.0 or later.
No pressure to upgrade upfront.