Effective date: 23 May 2026
READ CAREFULLY. These Terms contain a binding arbitration agreement, a class action waiver, a cap on our liability, broad disclaimers of warranty, and an indemnification obligation that apply to you. By installing, accessing or using Trefnus Resource you agree to be bound by these Terms in full. If you do not agree, you must not use the application.
Trefnus Resource is a self-hosted-style client-side resource booking and scheduling tool. The substantive data you produce — resource types, individual resources, bookings, configuration, maps and uploaded assets — is stored locally on your Device using browser IndexedDB and localStorage. The Application performs server communication only for licence verification, magic-link authentication and device registration, all of which is handled via Supabase (see our Privacy Policy).
The Application is offered as a productivity tool only. It is not a system of record, not a regulated booking platform, not a property management system, not an enterprise resource planning system, and is not certified for any specific industry or use case. You are solely responsible for determining whether the Application is fit for your particular purposes.
You accept these Terms by any of the following acts: (a) ticking the legal acceptance checkboxes during initial setup; (b) clicking a magic link to sign in; (c) installing, opening or otherwise using the Application; or (d) continuing to use the Application after these Terms are modified. If you are accepting on behalf of an organisation, you warrant that you have authority to bind that organisation, and references to “you” include that organisation.
Subject to your continuous compliance with these Terms and (where applicable) payment of all fees, we grant you a limited, personal, non-exclusive, non-transferable, non-sublicensable, revocable licence to install and use the Application for your own internal purposes during the term of these Terms.
You must not, and must not permit any third party to:
All rights not expressly granted to you are reserved by us. No implied licences are granted.
The Application enforces a hard limit of five (5) active Devices per licensed account. Each Device is identified by a randomly generated device hash stored locally. We may add, remove, change or enforce additional device limits at any time at our sole discretion.
You acknowledge that:
Activation requires you to provide a valid email address and to authenticate via a one-time magic link sent to that address. You agree that:
You retain all ownership rights in your Content. We claim no ownership of your Content.
Substantially all Content is stored locally on your Device. To the very limited extent we receive any Content (for example, if you email us a support attachment), you grant us a worldwide, royalty-free, non-exclusive licence to use, store, copy and process that Content solely for the purpose of providing the requested service.
You represent and warrant that: (a) you own or have all necessary rights in your Content; (b) your Content does not infringe any third-party right; (c) your Content does not contain malicious code; and (d) your Content complies with all applicable laws (including UK GDPR, EU GDPR and any other data-protection laws), and that, in respect of any personal data of third parties that you input into the Application, you have a lawful basis for doing so and have provided all required notices.
YOU ARE SOLELY RESPONSIBLE FOR BACKING UP YOUR DATA. Because the Application stores your Content in browser IndexedDB and localStorage on your Device, that Content can be lost or corrupted at any time and for many reasons outside our control, including: clearing browser data, browser updates, operating system updates, device failure, disk corruption, malware, third-party browser extensions, private/incognito browsing, storage quota eviction, automatic browser cleanup, service worker errors, schema migrations, or your own actions.
We do not back up your Content. We cannot recover lost or corrupted local data. Use the export/backup features in the Application regularly and store copies in independent locations. We disclaim all liability for any loss, corruption, deletion, unavailability or unrecoverability of your Content.
Where the Application is offered for a fee, all fees are stated at the point of purchase, are payable in advance, and are non-refundable except as expressly provided in the Refund & Cancellation Policy or as required by applicable law. Prices are exclusive of taxes unless stated otherwise, and you are responsible for all applicable taxes, duties, and charges.
We may change pricing at any time. New pricing applies to renewals and new purchases only.
The Application verifies your licence with our authentication provider on each launch. If verification fails (including because the licence has been revoked, the device limit has been exceeded, or your account has been terminated) the Application will refuse to launch. A bounded transient grace window may apply where a previously verified Device temporarily cannot reach the verification server; outside that window, access is denied until verification succeeds.
You agree not to interfere with, disable, circumvent, falsify or attempt to spoof licence verification, device identifiers or any related security mechanism. Any attempt to do so is a material breach of these Terms, voids your licence with immediate effect, and may constitute a criminal offence.
The Application and all related code, design, graphics, user interfaces, trademarks, service marks, and trade names are and shall remain the exclusive property of Trefnus and its licensors. These Terms do not transfer any intellectual property rights to you. Feedback you provide may be used by us without restriction and without compensation to you.
The Application relies on, links to or interoperates with third-party services including, without limitation: Supabase (authentication and licence database), unpkg.com and cdn.jsdelivr.net (content delivery networks for JavaScript libraries including React, Babel, PDF.js and the Supabase client). These services are independent of us and are governed by their own terms and privacy policies. We do not control and are not responsible for the availability, content, accuracy, security or practices of any third-party service. Your use of any third-party service is at your own risk.
THE APPLICATION IS PROVIDED “AS IS” AND “AS AVAILABLE” WITH ALL FAULTS, AND WITHOUT WARRANTY OF ANY KIND. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, WE EXPRESSLY DISCLAIM ALL WARRANTIES AND CONDITIONS, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, RELIABILITY, AVAILABILITY, SECURITY, TITLE, NON-INFRINGEMENT, AND ANY WARRANTIES ARISING FROM COURSE OF DEALING, COURSE OF PERFORMANCE OR TRADE USAGE.
Without limiting the generality of the foregoing, we do not warrant that: (a) the Application will meet your requirements or expectations; (b) the Application will be uninterrupted, timely, secure, free of viruses or error-free; (c) any defects will be corrected; (d) results obtained from the Application will be accurate, reliable or complete; (e) the Application will be compatible with any particular browser, operating system, device or third-party service; (f) data stored locally will persist for any minimum period; or (g) the Application will operate offline, with any particular performance, or at all.
No oral or written information or advice obtained from us, our employees or representatives shall create any warranty not expressly stated in these Terms.
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, OUR TOTAL CUMULATIVE LIABILITY ARISING OUT OF OR RELATING TO THE APPLICATION OR THESE TERMS, FROM ALL CAUSES OF ACTION AND ALL THEORIES OF LIABILITY (INCLUDING CONTRACT, TORT, NEGLIGENCE, STRICT LIABILITY, STATUTE AND OTHERWISE), SHALL NOT EXCEED THE GREATER OF (A) THE FEES ACTUALLY PAID BY YOU TO US FOR THE APPLICATION IN THE TWELVE (12) MONTHS IMMEDIATELY PRECEDING THE EVENT GIVING RISE TO THE CLAIM, OR (B) ONE HUNDRED POUNDS STERLING (£100).
IN NO EVENT SHALL WE OR OUR OWNERS, OFFICERS, DIRECTORS, EMPLOYEES, AGENTS, AFFILIATES, SUPPLIERS, LICENSORS OR CONTRACTORS BE LIABLE FOR ANY:
even if we have been advised of the possibility of such damages, and regardless of whether the remedy fails of its essential purpose.
The exclusions and limitations in this Section apply regardless of the form of action and are a fundamental basis of the bargain between you and us. You acknowledge that the fees, if any, charged for the Application reflect these allocations of risk.
Nothing in these Terms excludes or limits liability for: (a) death or personal injury caused by our negligence; (b) fraud or fraudulent misrepresentation; or (c) any liability which cannot lawfully be excluded or limited.
You agree to defend, indemnify and hold harmless Trefnus and our owners, officers, directors, employees, agents, affiliates, suppliers and licensors from and against any and all claims, demands, actions, proceedings, losses, damages, liabilities, costs and expenses (including reasonable legal fees on a full indemnity basis) arising out of or relating to: (a) your use or misuse of the Application; (b) your Content; (c) your breach or alleged breach of these Terms or the Acceptable Use Policy; (d) your violation of any law or any third-party right (including privacy and intellectual property rights); (e) any operational decision taken by you or any person relying on output from the Application; or (f) any dispute between you and any third party. We may, at our option, assume the exclusive defence and control of any matter subject to indemnification, in which case you agree to cooperate fully.
We may suspend, restrict or terminate your access to the Application, revoke your licence, or refuse any current or future use of the Application, at any time, for any reason or no reason, with or without notice, and without liability to you. Without limiting the foregoing, we may immediately terminate your licence if we believe you have breached these Terms or pose a security, legal or reputational risk.
You may stop using the Application at any time. Termination does not entitle you to any refund except as expressly stated in the Refund & Cancellation Policy.
Sections that by their nature should survive termination (including without limitation Sections 7, 8, 11, 13, 14, 15, 18, 19, 20, 21 and this Section 16) shall survive.
We may modify these Terms at any time. The updated Terms will be posted at /legal/terms-of-service.html with a new effective date. Your continued use of the Application after the effective date constitutes acceptance of the modified Terms. If you do not accept the modified Terms, you must stop using the Application; continued use is the sole indication of acceptance and no other notification will be given.
READ THIS SECTION CAREFULLY. IT REQUIRES YOU AND US TO RESOLVE DISPUTES THROUGH BINDING INDIVIDUAL ARBITRATION RATHER THAN IN COURT.
Any dispute, claim or controversy arising out of or relating to the Application or these Terms, including their formation, validity, breach or termination (a “Dispute”), shall be resolved exclusively by final and binding arbitration on an individual basis, except as set out below.
If any portion of this Section 18 is found unenforceable, that portion shall be severed, and the remainder shall continue in effect.
YOU AND WE EACH AGREE THAT ANY DISPUTE SHALL BE BROUGHT IN AN INDIVIDUAL CAPACITY ONLY, AND NOT AS A PLAINTIFF OR CLASS MEMBER IN ANY PURPORTED CLASS, COLLECTIVE, CONSOLIDATED, MASS OR REPRESENTATIVE ACTION OR PROCEEDING. Neither you nor we shall participate in a class, collective, mass or representative action against the other. The arbitrator may not consolidate more than one person’s claims and may not preside over any form of representative or class proceeding. You waive any right to a jury trial in respect of any Dispute.
If any provision of these Terms is held invalid, illegal or unenforceable, that provision shall be modified to the minimum extent necessary to make it enforceable, or if that is not possible, severed, and the remainder shall continue in full force and effect.
These Terms, together with the documents they reference (the Privacy Policy, the Disclaimer, the Acceptable Use Policy, the Cookie & Storage Policy and the Refund & Cancellation Policy), constitute the entire agreement between you and us regarding the Application and supersede all prior or contemporaneous communications, proposals and agreements.
No waiver of any provision of these Terms by us shall be deemed a further or continuing waiver, and our failure to assert any right or provision shall not constitute a waiver of that right or provision.
You may not assign or transfer these Terms or any rights or obligations under them, in whole or in part, without our prior written consent. Any purported assignment in breach of this Section is void. We may assign these Terms or any of our rights or obligations without notice and without your consent.
We are not liable for any failure or delay in performance to the extent caused by events outside our reasonable control, including acts of God, natural disasters, war, terrorism, civil unrest, government action, pandemic, epidemic, fire, flood, power failure, internet or telecommunications failure, cyber attack, denial-of-service attack, third-party service failure (including Supabase, content delivery networks and DNS), or failure of suppliers or subcontractors.
For questions about these Terms: legal@trefnus.com.
For privacy enquiries: privacy@trefnus.com.
For support: support@trefnus.com.
For security issues: security@trefnus.com.