Terms of Service & License Agreement

Last updated: 2026-04-26

These Terms of Service and License Agreement ("Terms") govern your access to and use of (a) the website getmantel.app and (b) the Mantel macOS application (the "App", the "Software"), both provided by 83 Ventures GmbH ("we", "us", "our"), based in Germany. By visiting the website, downloading, installing, or using Mantel, you agree to these Terms.

1. License Grant

Subject to your compliance with these Terms and payment of the applicable license fee, we grant you a non-exclusive, non-transferable, revocable license to install and use Mantel on macOS devices that you own or control, for personal or internal business purposes.

A purchased license includes all current and future features of the 1.x release line. Major version upgrades (2.x, 3.x, etc.) may require a separate purchase.

Each license may be activated on up to three (3) devices simultaneously. You can deactivate a device at any time from within the App to free up an activation slot.

2. License Activation and Validation

When you enter your license key, the App contacts our payment processor Lemon Squeezy to activate the license. The activation request transmits your license key together with a stable device identifier (your Mac's IOPlatformUUID), used solely to enforce the activation limit described above. Details are set out in our Privacy Policy.

The App periodically (at most once every 7 days) re-validates your license with Lemon Squeezy in the background. If our servers cannot be reached, Mantel continues to function for up to 14 additional days in offline grace mode before requiring re-validation.

3. Free Trial

Mantel offers a 14-day free trial with full access to all features. After the trial period, continued use requires a valid license purchase. No payment information is collected during the trial.

4. Pricing and Payment

Mantel is sold as a one-time purchase of $14.99 USD (or local equivalent). Payment is processed by Lemon Squeezy (Lemon Squeezy LLC), our authorized merchant of record. Lemon Squeezy handles tax collection, invoicing, and refund processing on our behalf.

5. Right of Withdrawal (EU Consumers)

If you are a consumer (i.e. a natural person acting outside your trade, business, craft, or profession) with habitual residence in the European Union, you have the right to withdraw from this contract within 14 days without giving any reason. The withdrawal period expires 14 days after the day on which the contract was concluded.

To exercise the right of withdrawal, you must inform us (83 Ventures GmbH, Römerweg 126, 67434 Neustadt an der Weinstraße, Germany, e-mail robert@83ventures.io) by an unequivocal statement (e.g. a letter sent by post or an email) of your decision to withdraw from this contract. Sending the communication before the withdrawal period expires is sufficient.

Effects of withdrawal. If you withdraw from this contract, we will reimburse all payments received from you without undue delay and no later than 14 days after the day on which we are informed of your withdrawal, using the same means of payment as the original transaction unless expressly agreed otherwise.

Premature expiry of the right of withdrawal for digital content. Mantel is delivered as digital content not on a tangible medium. In accordance with § 356 (5) BGB and Art. 16 (m) of Directive 2011/83/EU, your right of withdrawal expires when we begin performance of the contract after you have (i) given your express prior consent to immediate performance and (ii) acknowledged that you thereby lose your right of withdrawal. You provide both confirmations by ticking the corresponding consent box during checkout at Lemon Squeezy. Once your license key has been delivered, the right of withdrawal no longer applies.

6. Refund Policy

Because Mantel offers a 14-day free trial that grants full access before any purchase, we generally do not provide refunds after a license has been bought. If you believe your case warrants a refund (e.g., undisclosed bug, accidental purchase), email robert@83ventures.io within 14 days of purchase and we will review the request in good faith. Statutory consumer rights under EU law remain unaffected.

7. Updates

Mantel checks for updates at startup and on demand by contacting the GitHub Releases API. Updates within the same major version (1.x) are included in your license. Updates are only downloaded after you explicitly approve the prompt; you may also skip a specific version. We are not obligated to provide updates or continued support for any particular version.

8. Restrictions

You may not:

9. Intellectual Property

Mantel, including all source code, design, branding, and documentation, is the intellectual property of 83 Ventures GmbH. These Terms do not transfer any ownership rights to you.

10. Disclaimer of Warranty

THE SOFTWARE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE SOFTWARE WILL BE UNINTERRUPTED, ERROR-FREE, OR FREE OF HARMFUL COMPONENTS. STATUTORY CONSUMER RIGHTS UNDER GERMAN AND EU LAW REMAIN UNAFFECTED.

11. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL 83 VENTURES GMBH BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF PROFITS OR REVENUES, ARISING OUT OF OR IN CONNECTION WITH YOUR USE OF THE SOFTWARE OR WEBSITE. OUR TOTAL LIABILITY UNDER THESE TERMS SHALL NOT EXCEED THE AMOUNT YOU PAID FOR THE LICENSE. NOTHING IN THESE TERMS EXCLUDES OR LIMITS LIABILITY THAT CANNOT BE EXCLUDED OR LIMITED UNDER MANDATORY APPLICABLE LAW (E.G., LIABILITY FOR INTENT, GROSS NEGLIGENCE, OR INJURY TO LIFE, BODY, OR HEALTH).

12. Termination

We may terminate your license if you materially breach these Terms. Upon termination, you must cease all use of the Software and destroy all copies in your possession. Sections 8, 9, 10, 11, and 13 survive termination.

13. Governing Law and Jurisdiction

These Terms are governed by the laws of the Federal Republic of Germany, without regard to conflict of law principles. Place of jurisdiction is Neustadt an der Weinstraße, Germany, to the extent permitted by law. For consumers with habitual residence in another EU member state, the mandatory consumer protection rules of that member state remain unaffected.

14. Changes to These Terms

We may update these Terms from time to time. The updated version will be posted on this page with a new "Last updated" date. Material changes will be communicated via email where reasonably possible.

15. Contact

Questions about these Terms? Email robert@83ventures.io.

With Mantel

With Mantel