These Terms of Service ("Terms") form a binding agreement between you ("you") and Quantic Heartz LLC, a limited liability company formed in the State of Wyoming, United States, registered at 1621 Central Ave, Cheyenne, WY 82001 ("Quantic Heartz", "we", "us"). They govern your use of our website quanticheartz.io, our macOS application "Quantic Heartz", and any related services (together, the "Service").
By creating an account, starting a trial, subscribing, or otherwise using the Service, you confirm that you have read, understood, and agreed to these Terms. If you do not agree, do not use the Service.
1. The Service
Quantic Heartz is a macOS application that re-tunes audio played on your Mac from 440 Hz to 432 Hz in real time. The Service is offered as a paid subscription with a free trial period and as a one-time lifetime licence.
2. Eligibility
You must be at least 18 years old (or of legal age to form a binding contract in your jurisdiction) to use the Service. By using the Service you represent that you meet this requirement.
3. Your account
To use paid features you must create an account. You are responsible for keeping your credentials secure and for all activity that occurs under your account. Notify us immediately at support@quanticheartz.io if you suspect unauthorised access.
4. Subscriptions, trials, and pricing
Our current plans are:
| Plan | Price | Billing |
|---|---|---|
| Monthly | €6.99 | Auto-renewing every month |
| Yearly | €59.99 | Auto-renewing every year |
| Lifetime | €149.99 | One-time payment |
New monthly and yearly subscriptions include a 7-day free trial. You will not be charged during the trial. If you do not cancel before the trial ends, your selected plan begins and you are charged the listed price.
Prices are shown inclusive of any applicable VAT, which is calculated by Stripe based on your billing country. We may change prices with reasonable advance notice, which will not affect your current billing period.
5. Renewal and cancellation
Monthly and yearly subscriptions renew automatically at the end of each billing period unless you cancel. You can cancel at any time inside the application under Subscription, or by emailing support@quanticheartz.io. After cancellation your access continues until the end of the current paid period; it is not extended and not refunded for unused time.
Lifetime licences do not renew, do not expire, and are tied to your account. We will make reasonable commercial efforts to keep the Service running for lifetime customers but cannot guarantee availability in perpetuity if Quantic Heartz discontinues the Service.
6. Refunds and right of withdrawal
If you are a consumer in the European Union, United Kingdom, or Switzerland, you have a statutory right to withdraw from your purchase within 14 days. Details, including exceptions that apply once you begin using a digital service, are set out in our Refund Policy. Nothing in these Terms limits mandatory consumer rights.
7. Licence to use the Service
We grant you a limited, personal, non-exclusive, non-transferable, non-sublicensable, and revocable licence to install and use the Quantic Heartz application on Macs that you own or control, solely for your personal use, for as long as your subscription or lifetime licence is active and you comply with these Terms.
8. What you must not do
You agree not to, and not to permit anyone else to:
- copy, modify, translate, or create derivative works of the Service;
- reverse engineer, decompile, or disassemble the Service, except to the extent such a restriction is prohibited by applicable law;
- bypass, remove, or tamper with any licensing, security, or update mechanism;
- rent, sell, lease, sublicense, or redistribute the Service or your account credentials;
- use the Service to violate the law or infringe anyone's rights.
9. Intellectual property
Quantic Heartz, the Quantic Heartz logo, the application code, visuals, documentation, and all related materials are owned by Quantic Heartz LLC or its licensors and are protected by copyright, trademark, and other intellectual-property laws. Nothing in these Terms transfers ownership to you.
10. Third-party services
The Service integrates with third parties, including Apple (distribution and optional Sign-In), Google (optional Sign-In), and Stripe (payments). Your use of those services is governed by their own terms and privacy policies, and we are not responsible for them.
11. Beta and experimental features
We may label certain features as "beta", "experimental", or similar. Such features are provided for testing, may be unstable, and may be changed or removed at any time without notice.
12. Warranties and disclaimer
Except where prohibited by law, the Service is provided "as is" and "as available", without warranty of any kind, express or implied, including warranties of merchantability, fitness for a particular purpose, and non-infringement. We do not warrant that the Service will be uninterrupted, error-free, or that results will meet your expectations.
If you are a consumer in the European Union, your statutory rights regarding defective digital services remain unaffected.
13. Limitation of liability
To the maximum extent permitted by law, Quantic Heartz LLC will not be liable for any indirect, incidental, special, consequential, or punitive damages, or for any loss of profits, revenues, data, goodwill, or other intangible losses, arising from or related to the Service. Our aggregate liability for any and all claims arising from or related to the Service will not exceed the amount you paid us for the Service in the twelve months preceding the event giving rise to the claim.
Nothing in these Terms excludes or limits liability for fraud, gross negligence, wilful misconduct, death or personal injury caused by our negligence, or any other liability that cannot be excluded under applicable law — including, for consumers in the European Union, mandatory liability under consumer-protection law.
14. Indemnity
You agree to indemnify and hold Quantic Heartz LLC harmless from any claim or demand, including reasonable legal fees, made by a third party due to or arising out of your breach of these Terms or your violation of any law or the rights of a third party. This does not apply to consumers acting outside their trade, business, or profession, to the extent prohibited by applicable consumer-protection law.
15. Termination
You may stop using the Service at any time and cancel your subscription as described above. We may suspend or terminate your access to the Service if you materially breach these Terms or if we are required to do so by law. We will give you reasonable notice unless doing so would be unlawful or impractical.
16. Changes to the Service or these Terms
We may change the Service and these Terms from time to time. When we make material changes we will post the updated Terms at this URL and update the "Last updated" date. Where legally required we will also notify you by email. If you continue to use the Service after the effective date of the change, you accept the updated Terms.
17. Governing law and jurisdiction
These Terms and any dispute arising out of them are governed by the laws of the State of Wyoming, United States, without regard to its conflict-of-laws rules. The courts located in Laramie County, Wyoming, will have exclusive jurisdiction, except where mandatory consumer law in your country of residence requires otherwise. Nothing in this section deprives consumers in the European Union of the protection afforded by the mandatory provisions of the law of their country of residence.
18. Consumer dispute resolution
We are not obliged and not willing to participate in dispute-resolution proceedings before a consumer arbitration board (Verbraucherschlichtungsstelle) within the meaning of the German Consumer Dispute Resolution Act (VSBG).
Please note: the European Commission's Online Dispute Resolution (ODR) platform was permanently discontinued on 20 July 2025 by Regulation (EU) 2024/3228 and is no longer available for submitting complaints.
19. Miscellaneous
If any provision of these Terms is found unenforceable, the remaining provisions will stay in effect. Our failure to enforce a right is not a waiver of that right. You may not assign these Terms without our written consent; we may assign them to a successor in connection with a merger, acquisition, or corporate reorganisation. These Terms constitute the entire agreement between you and us regarding the Service.
20. Contact
Questions about these Terms can be sent to support@quanticheartz.io. A German-language version is available at /agb.