Skip to content
Last updated 2026-05-31

Terms of Service

These Terms of Service (the "Terms") govern your access to and use of the RayRF website at rayrf.com, the RayRF Studio desktop application, and any related services (collectively, the "Service"). The Service is operated by Aspen Erlandsson Brisebois, a sole proprietor doing business as Rayleigh Systems, registered in Ontario, Canada ("Rayleigh Systems", "we", "our", or "us"). RayRF is a product of Rayleigh Systems.

1. Acceptance of these Terms

By creating an account, downloading the RayRF Studio desktop application, activating a license, or otherwise using the Service, you agree to be bound by these Terms and by our Privacy Policy and Cookie Policy. If you do not agree, do not use the Service.

If you are accepting these Terms on behalf of an employer or other organization, you represent that you have authority to bind that organization, and "you" refers to that organization.

2. Your account

You are responsible for keeping your account credentials confidential, for all activity that occurs under your account, for keeping your billing information accurate and up to date, and for managing the license activations and machine entries associated with your account. You agree to notify us promptly at support@rayrf.com if you believe your account has been compromised.

3. Plans, pricing, and billing

RayRF is offered under the plans described on our Pricing page. Prices and the availability of plans may change; we will give reasonable notice before changes apply to existing paid subscribers.

3.1 Hobby plan and trial

The Hobby plan is for non-commercial use. New accounts may begin a free trial of the Hobby plan without providing a payment method. You will not be charged during the trial. If you add a valid payment method before the trial ends, your trial is extended to a total of 60 days. After the trial, paid Hobby subscriptions renew automatically until cancelled.

3.2 Pro plan

The Pro plan is offered on a monthly or annual basis and renews automatically until cancelled. Pro permits commercial use and includes the additional features described on the Pricing page.

3.3 Founding Member

The Founding Member offer is a one-time purchase that grants a perpetual Pro license, limited to the first fifty (50) customers.

For the avoidance of doubt, the words "perpetual", "lifetime", "forever", and similar terms used in connection with the Founding Member offer (including in marketing copy on the Pricing page or in promotional emails) refer to the operational lifetime of RayRF as a product offered by Rayleigh Systems. They do not refer to your lifetime, to any fixed number of years, or to any guarantee that the Service, the RayRF Studio desktop application, the license activation servers, or product updates will remain available indefinitely.

While RayRF is an actively offered product, we will use reasonable commercial efforts to keep it available to Founding Members, to keep the license activation infrastructure online, and to continue shipping updates and bug fixes. We do not promise any specific update cadence, any minimum number of years of support, or that the Service or activation servers will remain online forever. If Rayleigh Systems discontinues RayRF, ceases operations, or transfers RayRF to another party that discontinues it, Founding Member access ends together with the product, and the same applies if the license activation infrastructure is taken offline as part of a product wind-down. Where practicable, we will provide reasonable advance notice of a planned wind-down.

Refund terms for the Founding Member purchase are set out in Section 3.4 below.

3.4 Cancellation and refunds

You may cancel any recurring Hobby or Pro subscription at any time through the customer portal linked from your account page. Cancellation prevents any future renewal charge.

For a paid subscription, cancellation takes effect at the end of the billing period for which you have already paid: you keep access to the Service through the end of that period and you are not charged again, and you are not entitled to a refund of any portion of the period you have already paid for. While the subscription is in this scheduled-cancellation state, you may reactivate it from the customer portal before the end of the period to keep the subscription running.

For a Hobby trial with no payment method on file, there is nothing to cancel: the trial expires on its own and you are not charged. For a Hobby trial with a payment method on file (the 60-day extended trial), cancelling before the original 30-day trial would have ended schedules the trial to end on that original 30-day mark; cancelling after that point ends the trial immediately. In either case you are not charged.

Subscription payments and the Founding Member purchase are non-refundable as a baseline rule. The Hobby trial is provided precisely so you can evaluate RayRF Studio at no cost before deciding whether to commit to a paid plan; once you add a payment method and a paid period begins, that payment is treated as an intentional, considered decision. It is not refundable simply because you change your mind, do not use the Service during a billing period, or are not satisfied with the simulation results you obtained.

We may, in our sole discretion and on a case-by-case basis, issue a partial or full refund in unusual circumstances, for example a billing error, an accidental duplicate charge, a prolonged Service outage that we cannot reasonably address, or another situation we judge to merit a refund. A discretionary refund granted in one case does not establish a policy and does not entitle you or any other customer to a refund in any other case.

As a specific exception to the baseline rule above, the Founding Member purchase is refundable on written request made within thirty (30) days of the date of purchase, and is non-refundable thereafter.

Nothing in this section limits any non-waivable refund or consumer-protection rights you have under applicable law, including the Ontario Consumer Protection Act.

4. Software license

Subject to your compliance with these Terms and payment of any applicable fees, Rayleigh Systems grants you a non-exclusive, non-transferable, revocable, limited license to install and use the RayRF Studio desktop application on the number of machines permitted by your active plan, solely for your own use (or, in the case of a Pro or Founding license, your organization's use). All rights not expressly granted are reserved.

The license terminates automatically if your subscription ends, your license is revoked, or you breach these Terms. You may not sublicense, rent, lease, sell, or otherwise transfer the license; reverse engineer, decompile, or disassemble the software except to the extent that applicable law expressly permits such activity; or circumvent or abuse the activation system.

5. Acceptable use

You agree that you will not:

  • use the Service for any unlawful purpose;
  • use the Service in violation of Canadian or United States export control laws and regulations, including the U.S. Export Administration Regulations (EAR), the International Traffic in Arms Regulations (ITAR), or any equivalent restrictions, including for military or restricted radio-frequency applications without the required authorizations;
  • reverse engineer, decompile, or disassemble the licensed software except where applicable law expressly permits;
  • resell, redistribute, or sublicense licenses or activation keys, or share an account with parties beyond the seats granted by your plan;
  • attempt to abuse, circumvent, or interfere with the license activation system, the trial system, or any usage limits;
  • use the Service in a way that infringes another party's intellectual property or other rights, or that violates applicable privacy, data-protection, or anti-spam laws.

5.1 No competing-product use

Rayleigh Systems specifically prohibits the following uses of the Service, the RayRF Studio desktop application, and any output produced by them. These prohibitions apply in addition to the general rules above.

  • You may not use the Service, or any output, intermediate data, model, or information derived from it, to design, build, train, or improve a product, library, or service that is substantially similar to RayRF and intended to compete with it. This includes, without limitation, other finite-difference time-domain (FDTD), method-of-moments, finite-element, or otherwise general-purpose electromagnetic, RF, or microwave full-wave simulators.
  • You may not use the Service, the RayRF Studio application, simulation results obtained from it, screenshots of the application, or the RayRF name or logo in any commercial, marketing, advertising, sales, or other promotional material for a product or service that competes with RayRF (including other electromagnetic, RF, or microwave simulation tools), whether the comparison is favorable or unfavorable, named or anonymized, direct or indirect, including but not limited to benchmark comparisons, accuracy comparisons, feature matrices, screenshots placed side-by-side, and competitive landscape claims.

The restriction in the preceding paragraph applies only to commercial and promotional use by or on behalf of a competing product or service. It is not intended to restrict private evaluation by an individual user, internal benchmarking that is not published as marketing material, academic research and publication, or independent journalism. Nothing in this section prevents an individual user from forming or expressing their own opinion about RayRF.

6. Your content

You retain ownership of all simulation projects, geometries, materials, port definitions, mesh configurations, and results that you create or import using the Service ("Your Content"). Rayleigh Systems claims no ownership of Your Content.

To the extent that you submit content to us (for example, attaching a file to a support request), you grant Rayleigh Systems a limited, non-exclusive, royalty-free licence to host, copy, and process that content solely as necessary to provide the Service to you and to respond to your request. We will not use Your Content to train machine-learning models or for any other purpose outside of providing the Service.

7. Simulation results disclaimer

Simulation results from RayRF are estimates based on the geometry, materials, and configuration provided by the user. RayRF does not warrant accuracy and is not a substitute for measurement on calibrated equipment. Do not use simulation results as the sole basis for safety-critical, regulatory, or production decisions. Validate against measured data before fabricating hardware or making compliance claims.

8. Warranty disclaimer

Except as expressly stated in these Terms, the Service is provided "as is" and "as available", without warranties of any kind, whether express, implied, or statutory. To the maximum extent permitted by applicable law, Rayleigh Systems disclaims all warranties, including warranties of merchantability, fitness for a particular purpose, accuracy, reliability, non-infringement, and quiet enjoyment. We do not warrant that the Service will be uninterrupted, error-free, secure, or that defects will be corrected.

9. Limitation of liability

To the maximum extent permitted by applicable law, in no event will Rayleigh Systems be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, or for lost profits, lost revenue, lost data, business interruption, or cost of substitute services, arising out of or relating to your use of the Service, even if Rayleigh Systems has been advised of the possibility of such damages.

To the maximum extent permitted by applicable law, the aggregate liability of Rayleigh Systems arising out of or relating to these Terms or the Service will not exceed the greater of (i) one hundred United States dollars (USD $100), or (ii) the total amount you paid to Rayleigh Systems for the Service in the twelve (12) months preceding the event giving rise to the claim.

Some jurisdictions do not allow the exclusion or limitation of certain damages or rights; in those jurisdictions, the limitations in this section apply only to the extent permitted by applicable law, and nothing in these Terms purports to limit or exclude rights that cannot be lawfully limited or excluded, including consumer protections under Ontario or Quebec law.

10. Indemnification

You agree to indemnify, defend, and hold harmless Rayleigh Systems from and against any third-party claims, damages, liabilities, costs, and expenses (including reasonable legal fees) arising out of or related to (a) your use of the Service in violation of these Terms, (b) Your Content, including infringement claims based on it, or (c) your violation of applicable law or the rights of a third party.

11. Suspension and termination

We may suspend or terminate your access to the Service for non-payment, violation of these Terms, abuse of the Service, or suspected fraud. Where reasonable, we will provide notice and an opportunity to cure before terminating. We may terminate immediately when required by law, by a payment provider, or to protect the security or integrity of the Service or its users.

You may stop using the Service and cancel any active subscription at any time. Sections that by their nature should survive termination (including ownership provisions, warranty disclaimers, limitations of liability, indemnification, and the governing-law clause) survive termination.

12. Changes to the Service or these Terms

We may modify the Service from time to time, including by adding, removing, or changing features. We may also modify these Terms. For material changes, we will provide at least thirty (30) days advance notice through the Service or by email to the address associated with your account, except that changes required for security, legal compliance, or to address a critical operational issue may take effect sooner. Continued use of the Service after changes take effect constitutes acceptance of the updated Terms.

13. Governing law and venue

These Terms are governed by the laws of the Province of Ontario and the federal laws of Canada applicable in Ontario, without regard to conflict-of-laws principles. Subject to non-waivable rights you may have under your local law, the courts located in Toronto, Ontario, Canada have exclusive jurisdiction over any dispute arising out of or relating to these Terms or the Service, and you consent to the personal jurisdiction of those courts.

14. Class action waiver

To the extent permitted by applicable law, you and Rayleigh Systems each agree that any dispute arising out of or relating to these Terms or the Service will be brought solely in your individual capacity, and not as a plaintiff or class member in any purported class, collective, or representative proceeding. This section does not apply to disputes that cannot lawfully be subject to a class action waiver under applicable law.

15. Miscellaneous

Severability. If any provision of these Terms is found unenforceable, that provision will be modified or limited to the minimum extent necessary, and the remaining provisions will remain in full force.

No waiver. Our failure to enforce a provision is not a waiver of our right to do so later.

Assignment. You may not assign these Terms without our prior written consent. We may assign these Terms in connection with a merger, acquisition, or sale of all or substantially all of our assets.

Entire agreement. These Terms, together with the Privacy Policy and Cookie Policy, constitute the entire agreement between you and Rayleigh Systems regarding the Service and supersede any prior agreements.

16. Contact

Questions about these Terms can be sent to support@rayrf.com.

Aspen Erlandsson Brisebois, sole proprietor doing business as Rayleigh Systems, Toronto, Ontario, Canada.