MacPipAnswer
Where is my Clacky licence key, and how do I activate it?
Your Clacky licence key is in the receipt email Polar sends right after you buy, and on the thanks page after checkout. It starts with CLACKY-.
To activate it, open Clacky, click I have a key (or open Settings → Licence), paste the key and click Activate. Can’t find the email? Polar’s customer portal has your key too.
Where to find your key
Your key is in three places. Any one of them is enough.
- The thanks page after checkout shows your key with a Copy button, and Open Clacky & activate does it in one click.
- Your receipt email from Polar, sent to the address you typed at checkout. Check spam if you don’t see it.
- Polar’s customer portal at polar.sh/clacky/portal. Sign in with the email you bought with, and your key is there.
Activate Clacky
It takes a few seconds and needs an internet connection once.
- Open Clacky on your Mac. If you don’t have it yet, download it from clacky.app.
- Click I have a key in the window that offers to buy, or open Settings → Licence and find the Licence key field.
- Copy your key, then click Paste next to the field.
- Click Activate. Settings → Licence now says “Clacky is activated” and shows which Mac it is on.
If activation doesn’t work
Most activation problems are one of these.
- Check your internet connection. Activation checks the key with Polar once.
- Use Paste rather than typing the key, so no character is missed.
- If Clacky says the key is already active on another Mac, free it there with Move to another Mac, or in Polar’s customer portal. See moving your licence.
- A refunded purchase revokes its key, so that key won’t activate any more.
- Still stuck? Write to Boop Support inside Clacky or email hello@clacky.app. A real person answers.
What activating sends
When you activate, Clacky sends your licence key and your Mac’s model name (like “MacBook Air (M1, 2020)”) to Polar. About once a day it checks the key again with Polar and with clacky.app, which keeps only a one-way hash of your key. It never sends your name, your computer’s name or a serial number.
Once activated, Clacky keeps working offline, and a one-time licence never locks for being offline. See does Clacky work offline?
Questions
Do I need an account to activate Clacky?
Can I activate Clacky offline?
I lost my licence key. What now?
Do I need to activate again after an update?
Facts checked on 5 November 2026.
Related
- How do I move my Clacky licence to a new Mac?On the old Mac, open Settings → Licence and click Deactivate… under Move to another Mac. Then paste your key on the new Mac and click Activate.
- How many Macs can I use Clacky on?One Clacky licence is for 1 Mac at a time. Move it to a new Mac whenever you like, or buy a second licence for two Macs at once.
- Why does my Clacky receipt say Polar?Polar runs Clacky’s checkout as merchant of record: it takes the payment, handles sales tax, and sends your receipt and licence key.
- Does Clacky work offline?Yes. Sounds, the ripple, the recorder, captions and screenshots work offline, and a paid licence never locks offline. Activation needs a connection.
- Pay once$4.99 once, for 1 Mac, every update. One payment, no subscription, with a 7-day refund.
- How do I get help with Clacky?Open Boop Support in Clacky's menu (More → Boop Support…) and Justinas, who makes Clacky, answers. Or email hello@clacky.app. Ask Boop gives quick steps.
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