1. This agreement
This End User License Agreement (the “Agreement”) is a legal agreement between you and Ievgeniia Onokhova (“kott”, “we”, “us”) for Kott for macOS— the downloadable desktop version of the kott real-time dither, glitch and VJ studio (the “App”). By purchasing, downloading, installing, activating or using the App, you agree to this Agreement. If you do not agree, do not install or use the App, and you may request a refund under our Refund Policy.
The App is licensed, not sold. This Agreement covers your use of the desktop App. The same kott licence also unlocks the browser-based kott studio, and your use of that is governed by our Terms of Service. One purchase, two agreements: this one for the App, the Terms for the studio.
2. Your purchase & the seller of record
The App is no longer a separate purchase. It is covered by the single one-time kott licence, which unlocks the browser studio and licenses this App together — $39 through the end of 13 September 2026, $59 after that, before any tax that applies to you. It grants a lifetime license (Section 5). If you bought the App on its own for $49 while it was sold separately, that license stands and this Agreement governs it unchanged; a Founder license that included a macOS key is likewise unaffected.
We are the seller of record for your purchase. Ievgeniia Onokhova sells the licence to you directly. We use Stripe as our payment processor. Stripe is a payment processor only — it is not a Merchant of Record, it is not the seller, and it does not resell the App to you. Because no reseller stands between us, we issue your receipt, we are responsible for our own tax handling — any sales tax, VAT or GST due on your purchase is collected and remitted by us, from our own registrations — and we process your refunds ourselves under the Refund Policy. Your relationship for the purchase is with us, under this Agreement and our Terms of Service; no third-party reseller’s buyer terms apply. We never receive or store your full payment-card number.
3. License grant
Subject to your compliance with this Agreement, we grant you a personal, non-exclusive, non-transferable, non-sublicensable, revocable license to install and use the App as follows:
One license per person. A license is issued to a single individual person. That is the only unit of licensing — the license is not a per-device or per-seat license.
Install on all the Macs you personally use. You may install and use the App on every Mac that you personally own or use — for example your desktop, your laptop and a studio machine — as the same individual licensee. The license follows the person, not a specific computer.
Activation cap. For anti-abuse purposes, a license activates on a limited number of Macs — by default five (5). This cap is generous for normal personal use across your own machines. If you legitimately use more than five of your own Macs, contact support@kott.io and support can raise the cap for you. The cap exists to stop a single key from being shared publicly, not to limit your own personal use.
Not transferable. The license and your license key are personal to you and may not be sold, rented, lent, leased, assigned or transferred to anyone else, and may not be shared with another person.
4. Restrictions
You agree that you will not, and will not permit anyone else to:
Redistribute the App or your key. Copy, upload, mirror, host, resell, redistribute or otherwise make the App installer, the App itself, or your license key available to any other person or the public. Your key is for your own use only.
Circumvent licensing. Bypass, disable, or tamper with the license activation, the activation cap, or any technical protection in the App, or generate, forge or use license keys you were not issued.
Reverse-engineer. Reverse engineer, decompile or disassemble the App, except to the limited extent that applicable law expressly permits despite this restriction.
Misuse. Use the App unlawfully, or remove or alter any proprietary notices in the App.
The App bundles third-party components (fonts, on-device models and audio samples) under their own licenses. Those licenses continue to apply to those components; the notices are made available with the App.
5. Lifetime license & updates
Your license is a lifetime license for the App, and you receive free updates to the App for the lifetime of the product.
What “lifetime” means. “Lifetime” means the lifetime of the product — that is, for as long as we continue to offer and support Kott for macOS. It does not mean your personal lifetime, and it is not a promise of any specific future feature, update cadence, or that the product will be offered indefinitely. We may change, add or discontinue features in updates. If we ever discontinue the product, your already-installed copy continues to work under this license.
How updates are delivered. The App checks for updates against our public release feed and can download and install them (see Section 6). You are not required to install an update, but older versions may not receive fixes.
6. Offline by design — the only network the App uses
Kott for macOS is designed to run fully offline after a one-time license activation. There is no account, no telemetry, no analytics and no crash-report uploading. The App makes exactly two kinds of network request, and no others:
(a) One-time license activation. On first launch, the App contacts our activation endpoint one time to validate your key. This request sends only your license key, a random install identifier for that Mac, and the App version — nothing else. After a successful activation, the App does not need to phone home again and works offline indefinitely.
(b) Update check. The App checks our public release feed (GitHub releases) to see whether a newer version is available, and to download it if you update. If you are offline, this check fails silently and the App keeps working.
Crash diagnostics, if any, remain on your device and are not uploaded. See our Privacy Policy for the desktop-app privacy details.
7. Ownership
The App is owned by us and/or our licensors and is protected by copyright and other intellectual-property laws. Except for the license expressly granted in Section 3, no rights are transferred to you. We reserve all rights not expressly granted.
8. Termination & license-key revocation
This Agreement and your license are effective until terminated. Your license will terminate automatically if you breach this Agreement (for example, by redistributing the App or sharing your key).
Refunds and chargebacks revoke the key. If your purchase is refunded (see the Refund Policy) or subject to a chargeback, your license key is revoked. Once a key is revoked, its activation stops working and the App will no longer run under that key. This is the natural consequence of unwinding the purchase.
On termination for any reason, you must stop using the App and delete your installed copies. Sections 4, 7, 9, 10, 11 and 12 survive termination.
9. Disclaimer of warranties
The App is provided “as is” and “as available.” To the fullest extent permitted by law, we disclaim all warranties, whether express, implied or statutory, including any implied warranties of merchantability, fitness for a particular purpose, title and non-infringement. We do not warrant that the App will be uninterrupted, error-free, or compatible with any particular hardware, macOS version or third-party device, or that defects will be corrected.
Some jurisdictions do not allow the exclusion of certain warranties, so some of the above may not apply to you. Nothing in this Agreement excludes or limits any non-waivable consumer guarantee or statutory right you have under the law of your country of residence.
10. Limitation of liability
To the fullest extent permitted by law, we will not be liable for any indirect, incidental, special, consequential, exemplary or punitive damages, or for any loss of profits, revenue, data, goodwill or lost or corrupted work, arising out of or relating to the App or this Agreement, even if we have been advised of the possibility of such damages.
To the fullest extent permitted by law, our total aggregate liability arising out of or relating to the App and this Agreement will not exceed the amount you actually paid for the licence covering the App.
Some jurisdictions do not allow the exclusion or limitation of certain damages, so some of the above may not apply to you, and this section does not limit liability that cannot be limited by law.
11. Export & compliance
You represent that you are not located in, and will not use the App in, a country or by a person subject to applicable trade sanctions or export controls, and that you will comply with all applicable export laws.
12. Governing law
This Agreement is governed by the laws of the State of California, United States, without regard to its conflict-of-laws rules, and the courts of that jurisdiction will have exclusive venue, except where mandatory consumer- protection law gives you the right to bring proceedings in your own place of residence.
13. Changes to this agreement
We may update this Agreement for future versions of the App. Material changes apply to updates you choose to install; your continued use of the App after a change takes effect constitutes acceptance to the extent permitted by law. We will change the “Last updated” date above when we revise it.