nok. knocks the moment Claude, ChatGPT, Gemini, Perplexity, Grok, or Higgsfield finishes thinking — with a 3-line summary and a one-click reply, right in your browser.
Instant download · Use today via Chrome Developer Mode · Auto-upgrades to the Web Store version on June 2 · 30-day refund.
Already bought? Install guide →
or — not ready to buy?
Two emails total — launch day, then once for v1.1. Privacy.
Claude alarm · 12.3s
Yes — adding a Postgres index on user_id should resolve the slow query. Use CREATE INDEX CONCURRENTLY.
claude.ai
ChatGPT alarm · 8.1s
Three options: 1) Memoize with React.memo, 2) Move state up to avoid re-renders, 3) Use useMemo.
chatgpt.com
Gemini alarm · 4.5s
The conference is May 14–16 at COEX. Registration opens April 28. Early-bird ticket ₩180,000.
gemini.google.com
Higgsfield alarm
Your video render is ready. Click to open and view it in Higgsfield.
higgsfield.ai
Real notification · macOS & Linux toasts shown similar
Refund
30 days, no ceremony
Subscription
None — pay once
Account
Not required
Telemetry
Zero · 100% local
Researchers measured 23 seconds of focus lost per tab switch. Power users do this 12 times an hour just to check if the model is done.
AI got 10× smarter in two years. The way most people work with it? Still tab-switching every 20 seconds.
Scenario A
You give up waiting and open YouTube.
Then 90 minutes disappear and the answer's still just sitting there.
Scenario B
You find out it finished 30 minutes ago.
The momentum you had when you asked? Gone.
Scenario C
You tab-switch 10 times just to check.
Each switch: about 23 seconds of focus, gone for good.
Scenario D
You forget what you were even doing.
"Wait — what was I asking for again?"
Everything you need to stop watching and start shipping. The whole product, included in the founding price.
The instant Claude, ChatGPT, Gemini, Perplexity, Grok, or Higgsfield finishes — a friendly sound + Windows/macOS notification with the answer's first three lines.
See the highlights right in the alert. No tab switch.
Type your next prompt without leaving the doc you're in.
Play, pause, skip, volume — right in the popup.
Auto-post completions to Slack · Discord · Teams.
Quiet hours. Webhooks still fire async.
Long answer cut off? Auto-types "continue".
Auto / Light / Dark theme · Last 3 completions stored · Upload any MP3 or WAV · English & 한국어 UI
Install the extension, pin to toolbar. Pre-order buyers: drop the .zip into chrome://extensions.
Keep using Claude, ChatGPT, Gemini, Perplexity, Grok or Higgsfield. nok. stays out of your way.
Get alerted the second it's done. Read the summary. Reply if you want. Ship.
We don't run a server. We don't see what you ask AIs, what they answer, or whether you installed nok. at all. There's nothing to leak — because there's nothing collected.
All detection runs locally in the browser. There is literally no server to receive anything.
No telemetry. No usage tracking. No "anonymous diagnostics." Your activity stays put.
Pro keys verify once via Gumroad's licensing API on activation. After that, the result lives in local browser storage — no recurring check, no usage tracking.
| nok. | Tab-switching | Browser polling | Other extensions | |
|---|---|---|---|---|
| Knows when AI finishes | ~ 250ms | When you check | Often delayed | Varies |
| 3-line summary in alert | ● | — | — | — |
| Quick reply without tab switch | ● | — | — | — |
| Six AIs at once | ● | — | — | Usually 1 |
| 100% local · no telemetry | ● | ● | ● | Often not |
| No subscription | $9.99 once | ● | ● | Many require it |
No subscription. No drip-charges. The founding price unlocks the entire product — and every update we ever ship.
Founding edition · Open through 06 · 05 · 26
The Founding price ($9.99) ends June 5, 2026 at 12:01 AM PDT — exactly 72 hours after launch. After that, regular price is $39 — also lifetime. Same product. Same updates. Just different timing.
Lifetime · One-time
Instant download · Use today via Dev Mode · Auto-upgrades June 2 · Gumroad checkout
nok. is small. It runs locally. There's no server cost we need to recoup monthly. Charging a subscription would feel wrong. Lifetime keys stay lifetime — even when we add server-backed features later, those will be a separate product.
The full extension as a .zip + your license key, immediately by email. Drop it into chrome://extensions in Developer Mode and it works. On June 2 the Chrome Web Store version goes live and your install auto-upgrades to it — no work on your end.
Locally, yes — that's how we detect when an answer is done and pull the first three lines for the alert. Nothing leaves your browser. We don't have a server to send it to. See the privacy policy for the full spec.
Yes — anywhere Chrome / Edge / Brave / Arc runs (macOS, Windows, Linux, ChromeOS). Notifications use the OS-native mechanism on each platform.
Yes — your key syncs automatically to every Chrome instance signed into the same Google account. Activate once, all your browsers know.
We'll open-source the source. You'll be able to rebuild it yourself or fork it. No paying user gets stranded.
Within 30 days, email hello@nokalarm.com and we'll return your money — no ceremony.
Stop tab-switching. Start shipping. $9.99 once, $0 ever again.
Launch
06 · 02 · 2026 · 12:01 AM PDT
—
Founding window
$9.99 lifetime · until June 5, 12:01 AM PDT
After
$39 lifetime — same product, just later
Refund
30 days, no ceremony