Terms of Service

Last updated: 14 July 2026

1. Who you are dealing with

ZasMac is made by [YOUR LEGAL NAME OR COMPANY], [ADDRESS], Spain, tax ID [NIF / CIF]. Contact: hello@zasmac.app.

Your contract of sale, however, is with Lemon Squeezy, who act as Merchant of Record. They are the ones who legally sell ZasMac to you, take your money and invoice you, and their buyer terms apply to the transaction alongside these ones.

2. What ZasMac is

A novelty app for macOS. It lives in your menu bar, reads your MacBook’s motion sensor, and plays a sound when you hit the machine — louder the harder you hit it. That is the whole product. It is a joke that costs $4, and we would like it to keep being funny, so we are not going to pretend it is anything else.

3. Your licence

When you pay, you get a personal, non-exclusive, non-transferable licence to use ZasMac on Macs you own or control. You may install it on your own machines.

• You may not resell, rent, or redistribute ZasMac or your licence key.
• You may not share your key publicly. It is tied to your purchase.
• You may not reverse-engineer or decompile the app, except where the law says you can regardless of what we write here — and in the EU, it does.

Lost your key, or wiped your Mac? It is tied to the email you paid with, not to the machine. Get it back from the Lemon Squeezy customer portal.

4. Price and payment

ZasMac costs $4, once. You are charged inside the app, while you set it up — not on this website, which never asks for your card. There is no subscription, no recurring charge, and no second payment later. If the price ever changes, it changes for new buyers — not for you.

Depending on where you live, Lemon Squeezy may add VAT or local sales tax. That is their job as Merchant of Record, and the invoice comes from them.

5. Refunds

14 days, no questions asked. Email hello@zasmac.app from the address you paid with, within 14 days of buying, and you get your money back. You do not have to justify it. “It stopped being funny” is a complete and sufficient reason.

The refund is processed by Lemon Squeezy and goes back to the card you paid with. This sits on top of — and does not replace — any statutory right of withdrawal you have as a consumer in the EU.

6. What it runs on

ZasMac needs a MacBook with Apple Silicon: M1 Pro or M1 Max, or any M2, M3 or M4. It does not run on Intel Macs, on the base M1, or on any desktop Mac — an iMac, Mac mini, Mac Studio or Mac Pro has no motion sensor to read, for the obvious reason that it does not move.

We put this on the front page, in the FAQ and here, in the largest type we could justify, because it is the one thing that will ruin your day. Check your chip before you pay: Apple menu → About This Mac → the line marked “Chip”. If you buy anyway and it will not run, the 14-day refund still covers you — but we would both rather you just read the box.

7. The administrator password, and the helper

By installing ZasMac you are agreeing to it installing a small privileged helper — that is what macOS asks for your password about, once. The helper exists because macOS will only give accelerometer data to a privileged process. It reads that sensor and reports how hard you hit the machine, and it does nothing else. It has no network access.

You can remove it whenever you like by uninstalling ZasMac. We explain what it does on the front page and in the privacy policy rather than burying it here.

8. No warranty

ZasMac is provided “as is”. We have tested it and we use it ourselves, but we do not promise it is free of bugs, that it will work with every future version of macOS, or that it will keep making you laugh. To the extent the law allows, we disclaim the implied warranties of merchantability and fitness for a particular purpose.

Nothing here removes the rights you have as a consumer under Spanish or EU law. Where these terms conflict with those rights, those rights win.

9. Hitting your own computer

This clause is funny and also completely serious.

ZasMac responds to physical impact. It does not instruct you to damage your property, and it does not need you to hit your MacBook hard to work — a firm tap is plenty. How hard you hit your own laptop is your decision and your responsibility.

We are not liable for physical damage to your Mac, its screen, its hinge, its enclosure, anything sitting next to it, or anything else you break while using ZasMac. Your hardware warranty is a matter between you and Apple, and we cannot and do not speak for them.

Your MacBook cost several hundred times what this app did. Please act accordingly.

10. Limitation of liability

To the maximum extent permitted by law, and except in cases of fraud, gross negligence, or death or personal injury caused by our negligence — none of which we intend to be involved in — our total liability to you in connection with ZasMac is limited to the amount you actually paid for it. Which is $4.

11. Availability

We may stop selling or distributing ZasMac at any time. If we do, your existing licence keeps working — we are not going to reach into your Mac and switch it off.

12. Governing law

These terms are governed by Spanish law. If you are a consumer, you keep the protection of the mandatory consumer law of the country you live in, and you can bring proceedings in your local courts.

The European Commission also runs an online dispute resolution platform, though emailing us is faster and we will almost certainly just say yes.

13. Not affiliated with Apple

ZasMac is an independent product. It is not made, endorsed or approved by Apple Inc. Apple, Mac, MacBook, macOS and Apple Silicon are trademarks of Apple Inc.