Select what you don't know.
Select text⌥ SpaceDone.
Any text, any app on your Mac.
Understand it, right where you are.
Requires macOS 14+ · Apple Silicon & Intel · v1.0
Any text, any app on your Mac.
Understand it, right where you are.
Requires macOS 14+ · Apple Silicon & Intel · v1.0
See it in action
Unfamiliar term? Explained in seconds. Ask a follow-up for more.
Psychiatry — Week 7
1. Reward pathway
"Why do I keep opening Instagram?"
2. Focus pathway
"Why can't I start this essay?"
3. Movement pathway
"Why Parkinson's patients experience tremors"
“Dopamine is not about pleasure — it's about the anticipation of pleasure.”
— Wolfram Schultz, 1997
How it works
Three steps. Two seconds.
Highlight any text you don't understand.
Any app on your Mac. Any language.
One shortcut. AI appears instantly.
Summary right on your screen.
Need more? Ask a follow-up without leaving the popup.
Safari, VS Code, Notion, Keynote, Mail — any app where you can select text.
neuroplasticity
Your brain's ability to rewire itself — at any age.
It means "too old to learn" isn't a thing. That's not a motivational poster — it's neuroscience. Every time you study something new, your brain physically changes to get better at it.
Reading something and hit a wall?
Select, ⌥ Space, keep reading. Your flow stays intact.
TypeError: Cannot read properties of undefined
This error means you're trying to access a property on a variable that is undefined.
Check that the object exists before accessing its properties. Common fix: use optional chaining (?.) or add a null check.
Drag over a stack trace. Press ⌥ Space.
Get a plain-English explanation without opening Stack Overflow.
この機能は非常に便利です
"This feature is very convenient."
この (this) + 機能 (feature) + 非常に (very) + 便利 (convenient) + です (is — polite form)
Emails, articles, contracts — in any language.
Never stumble on a foreign language. No matter the script.
First answer not enough? Just ask again, right there.
No new app. Conversation stays right there.
7 steps vs 3. 45 seconds vs 2.
That's it. No browser. No copy-paste. No context switch.
AI got smarter. All it needed was a shortcut. ⌥ Space.
Your text stays yours. Just AI, right where you need it.
Native macOS performance.No Electron, no web wrapper.
Your text only goes to the AI.Not stored or analyzed.
Download. ⌥ Space. That's it.No account, no billing, no API key.
Popup appears and vanishes.No dock icon, no menu clutter.
Lives quietly in your menu bar.3.2 MB. Starts in under a second.
A translucent glass popup.Designed to feel at home on your Mac.
Select what you don't know. Try it free.
macOS 14+ · Apple Silicon & Intel · v1.0