Terms of Service

Last updated: April 15, 2026

The latest version of this document is maintained at https://www.tronor.com/legal/terms.

These Terms of Service ("Terms") are entered into between you and Tronor LLC ("Tronor," "we," "us," or "our"), and govern your access to and use of all Tronor products, websites, applications, and services (collectively, the "Service"). By accessing or using the Service, you agree to be bound by these Terms. If you are using the Service on behalf of an organization, you agree to these Terms on behalf of that organization and represent that you have the authority to do so.

If you do not agree to these Terms, do not use the Service.

ARBITRATION NOTICE: THESE TERMS CONTAIN A BINDING ARBITRATION CLAUSE AND A CLASS ACTION WAIVER IN SECTION 15. PLEASE READ THEM CAREFULLY. BY AGREEING TO THESE TERMS, YOU AGREE TO RESOLVE DISPUTES THROUGH INDIVIDUAL BINDING ARBITRATION AND WAIVE YOUR RIGHT TO PARTICIPATE IN CLASS ACTIONS.

1. Eligibility

You must be at least 13 years old to use the Service. If you are under 18, you must have a parent or legal guardian's permission. By using the Service, you represent that you meet these requirements.

2. Description of Service

Tronor's products and services include T-Sketch (a real-time collaborative drawing and visual thinking platform), T-Annotate (a macOS screen annotation tool), and any related websites, desktop applications, mobile applications, and services. T-Sketch enables multiple users to draw together on a shared canvas over the internet in real time. The Service allows users to create, edit, share, and collaborate on visual content. We may add, change, or remove features of the Service at any time without notice.

3. Service Level

We target Service availability (uptime) of 99.5% or higher over each calendar month. Uptime is measured and reported by our uptime monitoring service at https://status.tronor.com. Scheduled maintenance and any downtime due to circumstances outside our reasonable control (for example, events that would fall under Force Majeure as described in Section 16) are excluded from this calculation and do not count against the 99.5% target.

4. User Accounts

To use the Service, you must create an account. An account is required because the core functionality of T-Sketch -- real-time collaboration on shared canvases -- depends on user identity for synchronization, presence, permissions, and team membership. You agree to:

Provide accurate and complete registration information
Maintain the security of your account credentials
Notify us immediately of any unauthorized use of your account
Accept responsibility for all activities that occur under your account

Account credentials are personal and may not be shared. We are not responsible for any loss or damage arising from your failure to protect your account credentials.

5. Subscriptions and Billing

The Service is offered under free and paid subscription plans. If you purchase a paid subscription:

Auto-Renewal. Your subscription will automatically renew at the end of each billing period (monthly or annual) at the then-current rate, unless you cancel before the renewal date.
Cancellation. You may cancel your subscription at any time through your account settings or by contacting us. Cancellation takes effect at the end of the current billing period. No refunds are provided for partial billing periods.
Price Changes. We may change subscription pricing at any time. Price changes for existing subscriptions take effect at the next renewal. We will provide reasonable notice of price changes.
Taxes. Subscription fees do not include taxes. You are responsible for any applicable taxes.
Payment. By purchasing a subscription, you authorize us (via our third-party payment processor) to charge the payment method you provide. You are responsible for any fees your bank or payment provider charges.

6. Acceptable Use

Your use of the Service is subject to our Acceptable Use Policy, which is incorporated into these Terms by reference. You agree to comply with the Acceptable Use Policy at all times. Violations may result in content removal, account suspension, or termination.

In addition to the Acceptable Use Policy, you agree not to:

Infringe upon the intellectual property rights of others (see our Copyright & DMCA Policy)
Reverse engineer, decompile, disassemble, or attempt to discover the source code of the Service
Resell, sublicense, rent, or redistribute access to the Service
Use automated means (bots, scrapers, etc.) to access the Service without our prior written consent

7. Intellectual Property

Your Content. You retain all rights to the content you create using the Service ("Your Content"). By using the Service, you grant us a limited, non-exclusive license to store, display, process, and transmit Your Content solely as necessary to provide and improve the Service.

Our Content. The Service, including its design, code, features, documentation, and all associated intellectual property, is owned by Tronor LLC. You may not copy, modify, or distribute any part of the Service without our express written permission.

Reservation of Rights. All rights not expressly granted in these Terms are reserved by the respective party. No license or right is implied by these Terms beyond what is expressly stated.

8. Feedback

If you provide us with suggestions, ideas, feature requests, comments, or other feedback about the Service ("Feedback"), that Feedback is not your intellectual property. You do not retain any ownership or other rights in it, and you have no claim against us for our use or implementation of it. You grant us an unrestricted, perpetual, irrevocable, royalty-free right to use, modify, and incorporate Feedback into our products and services. If we implement any Feedback, we have no obligation to you—including no obligation to pay you, credit you, or otherwise compensate you.

9. Usage Data

We collect and analyze data about how you use the Service ("Usage Data"), such as feature usage, performance metrics, and error logs. We may use Usage Data in de-identified and aggregated form to maintain, improve, and enhance the Service. Usage Data does not include Your Content itself.

10. Privacy

Your use of the Service is also governed by our Privacy Policy, which describes how we collect, use, and protect your personal information.

11. Indemnification

You will indemnify, defend, and hold harmless Tronor LLC, its officers, employees, and contractors from any third-party claims, damages, losses, costs, and expenses (including reasonable attorney's fees) arising out of or related to: (a) Your Content; (b) your violation of these Terms; or (c) your violation of any applicable law or the rights of any third party.

12. Disclaimers

THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE SERVICE WILL BE UNINTERRUPTED, ERROR-FREE, SECURE, OR FREE OF VIRUSES OR OTHER HARMFUL COMPONENTS. WE MAKE NO WARRANTY REGARDING THE ACCURACY, RELIABILITY, OR COMPLETENESS OF ANY CONTENT AVAILABLE THROUGH THE SERVICE.

13. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, TRONOR LLC, ITS OFFICERS, EMPLOYEES, AND CONTRACTORS SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES ARISING OUT OF OR RELATED TO YOUR USE OF OR INABILITY TO USE THE SERVICE, REGARDLESS OF THE THEORY OF LIABILITY.

TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE TOTAL LIABILITY OF TRONOR LLC FOR ALL CLAIMS ARISING OUT OF OR RELATED TO THESE TERMS OR THE SERVICE SHALL NOT EXCEED THE GREATER OF: (A) THE AMOUNTS YOU PAID TO TRONOR IN THE 12 MONTHS PRECEDING THE EVENT GIVING RISE TO THE CLAIM; OR (B) ONE HUNDRED DOLLARS ($100).

14. Termination

We reserve the right to suspend or terminate your access to the Service at any time, with or without cause, and with or without notice. Upon termination, your right to use the Service will immediately cease. We may delete Your Content within 30 days after termination. Sections 7 through 20 of these Terms survive termination.

Account Deletion. You may delete your account at any time through the account settings in the Service. Upon deletion, your account is immediately deactivated and you will no longer be able to sign in. Your personal data and Your Content will be permanently deleted within 30 days of account deletion, except where retention is required to comply with legal obligations, resolve disputes, or enforce our agreements, as described in our Privacy Policy. Deletion is irreversible — once the 30-day retention period ends, your data cannot be recovered. If you are the sole administrator of a team, you must either delete that team or transfer the administrator role to another member before you can delete your account.

Team Deletion. Team administrators may delete a team through the team settings in the Service. Team deletion permanently removes all projects, sketches, collaboration data, and member access associated with that team within 30 days. Teams with an active paid subscription must have the subscription canceled before the team can be deleted.

15. Dispute Resolution

Binding Arbitration. Any dispute, claim, or controversy arising out of or relating to these Terms or the Service ("Claim") will be resolved by binding arbitration on an individual basis, rather than in court, except that either party may bring suit in court to enjoin infringement of intellectual property rights. The arbitration will be conducted by a nationally recognized arbitration provider under its applicable rules. The arbitration may be conducted remotely, in writing, or in San Francisco, California. The arbitrator's decision will be binding and enforceable in any court of competent jurisdiction.

Class Action Waiver. YOU AND TRONOR AGREE THAT EACH MAY BRING CLAIMS AGAINST THE OTHER ONLY IN AN INDIVIDUAL CAPACITY AND NOT AS A PLAINTIFF OR CLASS MEMBER IN ANY CLASS, CONSOLIDATED, OR REPRESENTATIVE ACTION. IF THIS WAIVER IS FOUND UNENFORCEABLE, THEN THE ENTIRETY OF THIS ARBITRATION PROVISION SHALL BE NULL AND VOID.

Opt-Out. You may opt out of this arbitration provision by sending written notice to support@tronor.com within 30 days of first agreeing to these Terms. Your notice must include your name, email address, and a clear statement that you are opting out of arbitration.

Pre-Arbitration Notice. Before initiating arbitration, you agree to send a written description of the Claim to support@tronor.com and allow 60 days for resolution.

16. General Provisions

Governing Law. These Terms are governed by the laws of the State of California, without regard to conflict of laws principles. The United Nations Convention on Contracts for the International Sale of Goods does not apply.

Jurisdiction. For any Claims not subject to arbitration, the exclusive jurisdiction and venue will be the state and federal courts located in San Francisco, California, and both parties consent to the jurisdiction of such courts.

Force Majeure. Tronor will not be liable for any delay or failure to perform resulting from causes outside its reasonable control, including but not limited to acts of nature, war, terrorism, epidemics, power outages, internet disruptions, or government actions.

Assignment. You may not assign or transfer these Terms or your rights under them without our prior written consent. We may assign these Terms without restriction. Any purported assignment in violation of this section is void.

Severability. If any provision of these Terms is found to be unenforceable, the remaining provisions will continue in full force and effect. The unenforceable provision will be modified to the minimum extent necessary to make it enforceable while preserving its intent.

No Partnership. Nothing in these Terms creates a partnership, joint venture, employment, or agency relationship between you and Tronor.

Entire Agreement. These Terms, together with the Privacy Policy and any applicable subscription terms, constitute the entire agreement between you and Tronor regarding the Service and supersede all prior agreements.

Waiver. The failure of Tronor to enforce any right or provision of these Terms will not be deemed a waiver of that right or provision.

17. Apple App Store Additional Terms

The following additional terms apply when you access or use the Service through an application ("Licensed Application") obtained from the Apple App Store. These terms are required by Apple and supplement the rest of these Terms. In the event of a conflict between this section and the rest of these Terms, this section governs with respect to your use of the Licensed Application obtained from the Apple App Store.

Acknowledgement. You and Tronor acknowledge that these Terms are between you and Tronor only, and not with Apple Inc. ("Apple"). Tronor, not Apple, is solely responsible for the Licensed Application and its content. These Terms may not provide for usage rules that conflict with the Apple Media Services Terms and Conditions as of the date you agreed to these Terms.

Scope of License. The license granted to you for the Licensed Application is a non-transferable license to use the Licensed Application on any Apple-branded products that you own or control, as permitted by the Usage Rules set forth in the Apple Media Services Terms and Conditions. The Licensed Application may be accessed and used by other accounts associated with you via Family Sharing or volume purchasing.

Maintenance and Support. Tronor is solely responsible for providing maintenance and support services for the Licensed Application, as specified in these Terms or as required under applicable law. You and Tronor acknowledge that Apple has no obligation whatsoever to furnish any maintenance and support services with respect to the Licensed Application.

Warranty. Tronor is solely responsible for any product warranties, whether express or implied by law, to the extent not effectively disclaimed in Section 12 of these Terms. In the event of any failure of the Licensed Application to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price for the Licensed Application to you. To the maximum extent permitted by applicable law, Apple has no other warranty obligation whatsoever with respect to the Licensed Application, and any other claims, losses, liabilities, damages, costs, or expenses attributable to any failure to conform to any warranty are Tronor's sole responsibility.

Product Claims. You and Tronor acknowledge that Tronor, not Apple, is responsible for addressing any claims you or any third party may have relating to the Licensed Application or your possession and use of the Licensed Application, including but not limited to: (a) product liability claims; (b) any claim that the Licensed Application fails to conform to any applicable legal or regulatory requirement; and (c) claims arising under consumer protection, privacy, or similar legislation.

Intellectual Property. You and Tronor acknowledge that, in the event of any third-party claim that the Licensed Application or your possession and use of the Licensed Application infringes that third party's intellectual property rights, Tronor, not Apple, is solely responsible for the investigation, defense, settlement, and discharge of any such intellectual property infringement claim.

Legal Compliance. You represent and warrant that: (a) you are not located in a country that is subject to a U.S. Government embargo or that has been designated by the U.S. Government as a "terrorist supporting" country; and (b) you are not listed on any U.S. Government list of prohibited or restricted parties.

Third-Party Terms. You must comply with applicable third-party terms of agreement when using the Licensed Application. For example, if you use a wireless data connection, you must not violate the terms of your wireless data service agreement.

Third-Party Beneficiary. You and Tronor acknowledge and agree that Apple, and Apple's subsidiaries, are third-party beneficiaries of these Terms as they relate to the Licensed Application. Upon your acceptance of these Terms, Apple has the right (and is deemed to have accepted the right) to enforce these Terms against you as a third-party beneficiary with respect to the Licensed Application.

Developer Contact. Questions, complaints, or claims regarding the Licensed Application should be directed to:

Tronor LLC 12 E Yale Loop, Irvine, CA 92605 Phone: +1 (949) 354-2603 Email: support@tronor.com DUNS: 143469999

18. Google Play Additional Terms

The following additional terms apply when you access or use the Service through an application obtained from the Google Play Store. These terms supplement the rest of these Terms.

Acknowledgement. You and Tronor acknowledge that these Terms are between you and Tronor only, and not with Google LLC ("Google"). Tronor, not Google, is solely responsible for the application and its content.

Maintenance, Support, and Warranty. Tronor is solely responsible for providing maintenance, support, and any product warranties for the application. Google has no obligation to provide maintenance, support, or warranty services.

Product Claims. Tronor, not Google, is responsible for addressing any claims relating to the application or your use of the application, including product liability claims, regulatory compliance claims, and claims arising under consumer protection or privacy legislation.

Developer Contact. Questions, complaints, or claims regarding the application should be directed to Tronor at the contact information in Section 20.

19. Changes to Terms

We may modify these Terms at any time. We will provide notice of material changes by posting the updated Terms on our website and updating the "Last updated" date. Your continued use of the Service after such changes constitutes acceptance of the modified Terms. If you do not agree to the changes, you should stop using the Service.

20. Contact

If you have any questions about these Terms, please contact us:

Tronor LLC 12 E Yale Loop, Irvine, CA 92605 Phone: +1 (949) 354-2603 Email: support@tronor.com DUNS: 143469999