1. Scope and Provider
These Terms of Use govern your use of the website audiomastering.io and the browser-based audio mastering application provided there (together, the “Service”).
The Service is operated by:
Florian Nase
c/o POSTFLEX PFX-379-426
Emsdettener Straße 10
48268 Greven
Germany
Email: contact@audiomastering.io
VAT ID: DE464344831
Florian Nase is referred to below as the “Operator”. Full provider details can be found in the Legal Notice.
By using the Service, you agree to these Terms. If you do not agree, please do not use the Service.
2. The Service
The Service allows you to master audio files. All audio processing takes place locally in your browser using the Web Audio API. Audio files are not uploaded to the Operator’s servers and do not leave your device.
The Service is offered in a free version and a paid Pro version. The Operator does not provide mixing, mastering or any other creative service performed by a person; the Service is a software tool.
3. No User Account
Use of the Service does not require registration or a user account. Pro features are unlocked by entering a license key, which is stored locally in your browser.
4. Your Content and Rights
You may only process audio material for which you hold the necessary rights or for which you have obtained the required permissions. You are solely responsible for the material you process using the Service.
The Operator does not receive, store or process your audio material and therefore acquires no rights to it. All rights in your material remain with you.
5. Acceptable Use
You agree not to use the Service for unlawful purposes, not to circumvent or attempt to circumvent technical restrictions or the license system, not to place unreasonable load on the Service (for example by automated mass requests), and not to present the Service as your own product or resell it to third parties.
Your license key is intended for your own personal use. You may use it on any number of your own devices and browsers, but you agree not to share, publish, distribute, sublicense, sell or otherwise make it available to third parties. The Operator may deactivate license keys that are used in breach of this provision.
These restrictions do not limit any rights you have under mandatory law. Third-party software components contained in the Service (see Section 12) remain subject to their respective licenses.
6. Free Version
The free version is provided free of charge. The Operator may modify, limit or discontinue the free version or individual features at any time. There is no entitlement to the continued availability of the free version or of any specific feature.
7. Pro Version, Prices and Payment
The Pro version is offered as a monthly subscription at USD 8.99 per month, including applicable taxes. The price shown is the total amount you pay; billing intervals and payment methods are shown before you complete a purchase.
All purchases are processed by Lemon Squeezy (Sold through Link, LLC, 222 South Main Street, Suite 500, Salt Lake City, UT 84101, USA) acting as merchant of record. This means that the purchase contract is concluded between you and Lemon Squeezy as the seller, and that Lemon Squeezy is responsible for payment processing, invoicing and applicable taxes. The terms and privacy policy of Lemon Squeezy apply to the purchase in addition to these Terms.
Subscriptions renew automatically for the selected billing period unless cancelled before the end of the current period.
8. Cancellation
You may cancel your subscription at any time with effect from the end of the current billing period. Cancellation is available at any time via the Cancel Subscription page. After cancellation, Pro features remain available until the end of the period already paid for. Statutory cancellation rights remain unaffected.
9. Right of Withdrawal for Consumers (EU/EEA)
If you are a consumer resident in the EU or EEA, you have a statutory right to withdraw from a contract concluded at a distance within 14 days without giving any reason. The withdrawal period is 14 days from the day of conclusion of the contract.
Because purchases are made from Lemon Squeezy as merchant of record, Lemon Squeezy is your contractual partner and seller. The statutory right of withdrawal and any refunds therefore apply vis-à-vis Lemon Squeezy and are governed by its terms. You declare your withdrawal to Lemon Squeezy, using the contact details provided in your order confirmation. You may also contact the Operator at contact@audiomastering.io, and your request will be forwarded.
Please note: withdrawal is not the same as cancellation. Cancelling your subscription (see Section 8) ends future payments but does not refund a payment already made. If you wish to withdraw from the contract and request a refund, you must declare this to Lemon Squeezy as described above.
Early expiry for digital content
The Service provides digital content that is not supplied on a tangible medium. The right of withdrawal expires where, before performance begins, you have expressly consented to performance beginning before the end of the withdrawal period, you have acknowledged that you thereby lose your right of withdrawal, and the seller has provided you with a confirmation of the contract. This consent and confirmation are obtained during the Lemon Squeezy checkout process in accordance with its terms.
Effects of withdrawal
In the event of an effective withdrawal, the seller shall reimburse all payments received without undue delay and at the latest within 14 days from the day on which the notice of withdrawal was received, using the same means of payment that you used for the original transaction.
Model withdrawal form
(Complete and return this form only if you wish to withdraw from the contract. Address it to the seller, Lemon Squeezy — contact details are provided in your order confirmation. You may also send a copy to contact@audiomastering.io.)
- I/we hereby give notice that I/we withdraw from my/our contract for the purchase of the following digital content: __________
- Ordered on: __________
- Name of consumer(s): __________
- Address of consumer(s): __________
- Date: __________
10. Availability and Changes to the Service
The Operator strives to keep the Service available but does not guarantee uninterrupted or error-free availability. Maintenance, updates or technical issues may lead to temporary unavailability.
The Operator may further develop, modify or discontinue the Service or individual features, provided this is reasonable for you taking into account the Operator’s legitimate interests, or where required for legal or technical reasons. For paid plans, your statutory rights in the event of significant changes remain unaffected.
The Service requires a modern web browser and sufficient device resources. Processing very long audio files may not be possible on all devices; corresponding technical limits are indicated in the Service.
11. Warranty and Limitation of Liability
The Service processes audio according to technical parameters. The Operator does not warrant that the results meet your artistic or commercial expectations, are suitable for a particular purpose, or are ready for commercial release without review. You are responsible for checking exported files before use.
For the free use of the Service, the Operator is liable only for damages caused by intent or gross negligence, as well as for damages arising from injury to life, body or health.
For paid services, the Operator is liable without limitation for intent and gross negligence, for damages arising from injury to life, body or health, under the German Product Liability Act (Produkthaftungsgesetz), and for guarantees expressly given. In cases of slight negligence, the Operator is liable only for the breach of essential contractual obligations (obligations whose fulfilment makes the proper performance of the contract possible in the first place and on whose fulfilment you may regularly rely), limited to the damage typical for the contract and foreseeable at the time of conclusion of the contract. Any further liability is excluded.
The Operator is not liable for the loss of audio material or project states on your device. Please keep backups of your original files.
12. Software Licenses
The Service includes third-party software components. Details, license texts and attributions are available on the Licenses page.
13. Data Protection
Information on the processing of personal data can be found in the Privacy Policy.
14. Changes to These Terms
The Operator may amend these Terms where necessary for legal or technical reasons or to reflect changes to the Service, provided the amendment is reasonable for you. For ongoing paid contracts, you will be notified of material changes in due time before they take effect and may terminate the contract if you do not agree.
15. Consumer Dispute Resolution
The Operator is neither willing nor obliged to participate in dispute resolution proceedings before a consumer arbitration board.
16. Applicable Law and Final Provisions
These Terms are governed by the laws of the Federal Republic of Germany, excluding the UN Convention on Contracts for the International Sale of Goods. If you are a consumer resident in the EU or EEA, this choice of law does not deprive you of the protection afforded by the mandatory provisions of the law of your country of habitual residence.
Should any provision of these Terms be or become invalid, the validity of the remaining provisions shall remain unaffected.
Last updated: 30 August 2026