Last updated October 13, 2026 · Previous version
Website agreement
By using this website, you agree to these website terms. If you do not agree, do not use the website. These terms also provide explanatory notices about the Multitac application; the applicable App Store end-user license agreement governs the app license.
Your documents
You retain ownership of the notes, calculations, and other content you create or open with Multitac. Multitac does not claim a license to your private documents. You are responsible for the content you create and for maintaining appropriate backups of important work.
License and acceptable use
Subject to these terms and any applicable App Store license, you may use Multitac for personal or business purposes. You may not use the application or website to violate applicable law, interfere with its operation, bypass access controls, distribute malware, or infringe another person’s rights.
App Store license
If you obtain Multitac through the App Store, the license is governed by Apple’s applicable end-user license agreement and media services terms. Multitac currently relies on Apple’s Standard Licensed Application End User License Agreement. If these website terms conflict with the applicable App Store terms, the App Store terms control.
Calculations and generated suggestions
Multitac is a general-purpose notebook and calculation tool. You are responsible for reviewing expressions, assumptions, units, results, and generated suggestions before relying on them. Generated Insights and TIQ proposals may be incomplete or incorrect. They do not replace professional financial, legal, medical, engineering, tax, or other advice.
Availability and changes
Multitac is currently in development. Features, supported systems, documentation, and availability may change. We may update, suspend, or discontinue all or part of the application or website.
Third-party services
Multitac may rely on platform services provided by Apple, including iCloud Drive, the App Store, and on-device system models. This website is hosted by GitHub Pages. Those services are governed by their providers’ terms and availability.
Trademarks
Apple, Apple Vision Pro, iPad, iPhone, Mac, and Siri are trademarks of Apple Inc., registered in the U.S. and other countries and regions. App Store, iCloud, and iCloud Drive are service marks of Apple Inc., registered in the U.S. and other countries and regions. Calca and Numi are trademarks or product names of their respective owners. Multitac is not affiliated with or endorsed by those third-party product owners.
Disclaimer
To the extent permitted by law, Multitac and this website are provided “as is” and “as available,” without warranties of uninterrupted operation, error-free results, fitness for a particular purpose, or non-infringement. Rights that cannot legally be disclaimed remain in effect.
Limitation of liability
To the extent permitted by law, the developer will not be liable for indirect, incidental, special, consequential, or punitive damages, or for lost profits, revenues, data, or use arising from Multitac. This limitation does not apply where prohibited by law.
Changes to these terms
These terms may be updated as Multitac approaches release or gains features. The date above will identify the latest version. Continued use after an update means you accept the revised terms.
Contact
Questions about these terms can be sent to terms@multitac.app.