Terms and Conditions

Terms and Conditions

Ravelation Pty Ltd (ACN 609 809 707) Effective 19 August 2026 | Version 1.0

1. About these terms

1.1 Who we are

These terms are between you and Ravelation Pty Ltd  (ACN 609 809 707) of 7 Gordon Avenue, Coogee NSW 2034, Australia (“Ravelation”, “we”, “us”, “our”).

1.2 What these terms cover

These terms govern your use of:

• the websites at ravelation.net and  marketing.ravelation.net;
• your Ravelation account;
• the Ravel data analytics plugin; and
• the RavelSim systems dynamics platform,

together, the “Service”.

1.3 Acceptance

By creating an account, purchasing a subscription, or using the Service, you agree to these terms. If you do not agree, do not use the Service.

If you are agreeing on behalf of a company or other organisation, you confirm you have authority to bind it, and “you” means that organisation.

1.4 Eligibility

You must be at least 18 years old and able to form a binding contract to use the Service.

2. Your account

2.1 Registration

Accounts are created and authenticated through  Clerk. You must provide accurate information and keep it up to date.

2.2 Your responsibility

You are responsible for all activity under your account and for keeping your credentials secure. Tell us immediately at [email protected] if you believe your account has been compromised.

2.3 One account per user

Accounts are personal to the individual or organisation that holds them and must not be shared, sold or transferred without our written consent.

3. The software

3.1 Minsky — open source

Minsky is open-source software, distributed under the GNU General Public License (GPL). Your use of Minsky is governed by the GPL, not by these terms. Nothing in these terms restricts any right you have under the GPL in respect of Minsky, and nothing in these terms is intended to impose additional restrictions on GPL-licensed code.

The Minsky source code is available at our public repositories.

3.2 Ravel — proprietary

Ravel is a proprietary data analytics plugin owned by Ravelation. It is not open-source and is  not licensed under the GPL. Access to and use of Ravel requires an active paid subscription.

3.3 RavelSim — proprietary

RavelSim is a prebuilt version of the open source Minsky for Windows and MacOS. It may in the future have additional features not available in the open source Minsky, in particular integrations with the Ravelation website.

3.4 No implied rights

Nothing in these terms grants you any right in Ravel or RavelSim other than the licence expressly set out in clause 5.

4. Subscriptions and billing

4.1 Merchant of Record

Our order process is conducted by our online reseller  Paddle.com. Paddle.com is the Merchant of Record for all our orders. Paddle provides all customer service inquiries and handles returns.

Your purchase contract for any subscription is with Paddle, and Paddle’s Buyer Terms apply to that purchase in addition to these terms.

4.2 Billing cycle

Subscription plans are billed on a recurring monthly   basis in advance, unless a different cycle is stated at checkout.

4.3 Automatic renewal

Your subscription renews automatically at the end of each billing period, and your payment method will be charged, until you cancel. The renewal amount and interval are shown to you at checkout and in your receipt.

4.4 Taxes

Prices are shown at checkout. Paddle calculates, collects and remits applicable sales tax, VAT and GST as Merchant of Record. The amount payable including tax is displayed before you commit to the purchase.

4.5 Price changes

We may change subscription prices. We will give you at least 30 days’ written notice before a price change takes effect for your subscription. If you do not accept the new price, you may cancel before it takes effect under clause 6, and the change will not apply to you.

4.6 Failed payments

If a payment fails, Paddle may retry it. If payment remains outstanding, we may suspend or terminate your access to Ravel and RavelSim under clause 18.

5. Licence to use Ravel and RavelSim

5.1 What we grant you

While your subscription is active and paid, we grant you a  non-exclusive, non-transferable, non-sublicensable, revocable licence to install and use Ravel and RavelSim for your own internal business or professional purposes, on the number of devices or by the number of users covered by your plan.

5.2 What you must not do

You must not, and must not permit anyone else to:

1. copy, distribute, resell, rent, lease, lend or sublicense Ravel or RavelSim, or make them available to any third party;
2. reverse engineer, decompile or disassemble Ravel or RavelSim, or attempt to derive their source code, except to the extent this restriction cannot lawfully be excluded;
3. modify or create derivative works of Ravel or RavelSim;
4. remove, obscure or alter any proprietary notice, licence key or technical protection measure;
5. circumvent or attempt to circumvent any licensing, entitlement or access control;
6. use Ravel or RavelSim to build a competing product; or
7. use the Service in breach of any applicable law.

Clause 5.2 applies only to Ravel and RavelSim. It does not apply to Minsky, which is governed by the GPL.

5.3 Effect of cancellation on the licence

The licence in clause 5.1 terminates when your subscription ends. You must stop using Ravel and RavelSim and remove them from your devices.

6. Cancellation

6.1 How to cancel

You may cancel your subscription at any time, without giving a reason, through your account settings or the Paddle customer portal.

6.2 What happens when you cancel

Your subscription remains active until the end of the billing period you have already paid for. No further charges are made. Your access to Ravel and RavelSim terminates at the end of that period.

6.3 Refunds

Refunds are dealt with in our Refund Policy, which forms part of these terms.

7. Your content and data

7.1 You own your content

You retain all right, title and interest in the models, datasets, parameters and other content you create or process using the Service (“Your Content”). We claim no ownership in it.

7.2 Local processing

Your Content is processed locally on your own device. We do not receive, store or have access to it in the ordinary operation of the Service.

7.3 Content you send us

If you send us Your Content voluntarily — for example, with a support request — you grant us a limited licence to use it solely to provide the support or service you have requested.

7.4 Your responsibility

You are responsible for Your Content, including for having the rights to use it and for complying with any law applicable to it (including privacy law, where it contains personal information).

8. Acceptable use

You must not use the Service to:

1. break any law, or infringe anyone’s rights;
2. transmit malware or interfere with the Service’s operation or security;
3. gain unauthorised access to any system or account;
4. misrepresent your identity or affiliation; or
5. place an unreasonable load on our infrastructure.

9. Intellectual property

9.1 Our IP

Ravelation owns all intellectual property rights in Ravel, RavelSim, our websites, documentation, and branding, other than rights in third-party or open-source components.

9.2 Trade marks

“Ravel”, “RavelSim” and “Ravelation” are trade marks of Ravelation Pty Ltd. You must not use them without our written permission, except as reasonably required to identify our products.

9.3 Feedback

If you give us feedback or suggestions, we may use them without restriction or obligation to you. You are not required to give us feedback.

10. Third-party services

The Service relies on third parties including Clerk (authentication), Paddle (payments) and GitHub (repository hosting). Their own terms apply to your dealings with them. We are not responsible for third-party services except as required by law.

11. Privacy

Our handling of personal information is set out in our  Privacy Policy, which forms part of these terms.

12. Availability

We aim to keep the Service available but do not guarantee uninterrupted availability. We may suspend the Service for maintenance, and will give reasonable notice where practicable.

We may modify, add to or discontinue features. If we discontinue a material feature of a paid plan, you may cancel under clause 6 and we will refund the unused portion of the period you have paid for.

13. Support

Paddle also handles customer service enquiries relating to your order as Merchant of Record.

14. Disclaimers

14.1 Analytical tools only

Ravel and RavelSim are analytical and modelling tools. They are not, and must not be relied on as, financial, investment, economic, accounting, legal, tax or other professional advice.

Outputs depend entirely on the data, assumptions and parameters you supply. We make no representation that any output is accurate, complete, or suitable for any particular purpose, and we do not verify your inputs or assumptions.

Any decision you make using the Service is your decision and your responsibility. You should obtain independent professional advice before acting on any output.

14.2 No warranty

Subject to clause 15, the Service is provided “as is” and “as available”, and we exclude all warranties, conditions and representations not expressly set out in these terms, to the fullest extent permitted by law.

15. Australian Consumer Law

15.1 Your rights are not excluded

Nothing in these terms excludes, restricts or modifies any guarantee, right or remedy you have under the Competition and Consumer Act 2010 (Cth), including the Australian Consumer Law, or any other law, where to do so would be unlawful.

16. Limitation of liability

Clause 16 is subject to clause 15.

16.1 Excluded loss

To the extent permitted by law, we are not liable for any indirect, incidental, special or consequential loss, or for loss of profit, revenue, goodwill, business opportunity, anticipated savings, or loss or corruption of data, however arising.

16.2 Reliance on outputs

To the extent permitted by law, we are not liable for any loss arising from your reliance on, or any decision made using, outputs of Ravel or RavelSim.

16.3 Cap

To the extent permitted by law, our total aggregate liability arising out of or in connection with these terms or the Service is limited to the total fees you paid for the Service in the 12 months immediately before the event giving rise to the liability.

16.4 Your contribution

Our liability is reduced to the extent your acts or omissions, or those of your personnel, caused or contributed to the loss.

17. Indemnity

To the extent permitted by law, you indemnify us against any loss, liability or cost we suffer arising from:

1. your breach of these terms;
2. Your Content, including any claim that it infringes a third party’s rights or breaches any law; or
3. your use of the Service in breach of any law.

This indemnity is reduced to the extent our acts or omissions caused or contributed to the loss.

18. Suspension and termination

18.1 By you

You may cancel at any time under clause 6.

18.2 By us

We may suspend or terminate your access, on notice where practicable, if:

1. you materially breach these terms and, where the breach can be remedied, do not remedy it within 14 days of notice;
2. your subscription payment remains unpaid;
3. we reasonably suspect fraudulent or unlawful use; or
4. we are required to do so by law.

18.3 Consequences

On termination, the licence in clause 5.1 ends and you must stop using Ravel and RavelSim. Clauses 7.1, 9, 14, 15, 16, 17 and 21 survive termination.

Where we terminate other than for your breach, we will refund the unused portion of any period you have paid for.

19. Notices

We will send notices to the email address on your account. You should send notices to [email protected], or to Ravelation Pty Ltd, 7 Gordon Avenue, Coogee NSW 2034, Australia.

It is your responsibility to keep your email address current.

20. Changes to these terms

We may amend these terms. We will publish the amended terms with a new effective date and, where the change is material and adverse to you, notify account holders by email at least 30 days before  it takes effect.

If you do not accept a material change, your remedy is to cancel under clause 6 before it takes effect. Continuing to use the Service after the effective date means you accept the change.

21. General

21.1 Governing law

These terms are governed by the laws of New South Wales, Australia. You and we submit to the non-exclusive jurisdiction of the courts of New South Wales and the courts of appeal from them.

Nothing in this clause limits any right you have to bring proceedings in your country of residence where that right cannot be excluded by law.

21.2 Entire agreement

These terms, together with the Privacy Policy and the Refund Policy, are the entire agreement between you and us about the Service, and replace any earlier understanding. Paddle’s Buyer Terms apply separately to your purchase.

21.3 Severance

If any part of these terms is unenforceable, it is severed and the rest continues to apply.

21.4 No waiver

If we do not enforce a right, that is not a waiver of it.

21.5 Assignment

You may not assign these terms without our written consent. We may assign them in connection with a sale or reorganisation of our business, on notice to you.

21.6 Force majeure

Neither party is liable for a failure to perform caused by an event beyond its reasonable control, other than an obligation to pay money.

22. Contact