Terms of Use

Last updated 2026-09-01

App: HVAC Calq Developer: Nine Loops Studio Ltd, a company registered in Ireland (“the developer”) Address: 125 Viewmount, Rathdrum, Wicklow, Ireland Contact: hi@nineloops.co

1. Acceptance

By downloading, installing, or using HVAC Calq (“the app”), you agree to these Terms of Use (“terms”). If you do not agree, do not use the app.

If you are not old enough to enter into a binding contract where you live, a parent or legal guardian must agree to these terms on your behalf.

These terms are an agreement between you and the developer only. Apple Inc. (“Apple”) is not a party to them — see section 10.

2. Licence

You are granted a personal, non-exclusive, non-transferable, revocable licence to use the app on Apple-branded devices that you own or control, as permitted by the Usage Rules in the App Store Terms of Service. Where Family Sharing is enabled, that licence extends to the members of your family group on the same basis.

Apple’s standard Licensed Application End User Licence Agreement also applies to the app. Where these terms are silent, Apple’s standard agreement governs.

You may not copy, modify, reverse-engineer, decompile, disassemble, redistribute, rent, lease, resell, or sublicense the app, or attempt to extract its source code, except to the extent that restriction is prohibited by applicable law.

The app — including its calculators, text, and design — is owned by the developer and protected by copyright and other intellectual-property law. These terms do not transfer any ownership to you.

3. Purchases, subscriptions, and free trial

The app’s calculators are unlocked by an in-app purchase. The current price of each option is shown in the app before you buy and may vary by country or region.

• Monthly and Annual are auto-renewable subscriptions. Payment is charged to your Apple Account when you confirm the purchase. Each subscription renews automatically unless you cancel it at least 24 hours before the end of the current period, and your account is charged for the renewal within 24 hours before that period ends.
• Free trial. The Monthly and Annual subscriptions each begin with a 7-day free trial for eligible new subscribers. You will be charged when the trial ends unless you cancel at least 24 hours before it ends. Any unused portion of a free trial is forfeited when you purchase a subscription or the Lifetime unlock. Eligibility for introductory offers such as the free trial is determined by Apple and is generally limited to once per Apple Account.
• Lifetime is a one-time, non-consumable purchase. It does not renew, is never charged again, and there is nothing to cancel.
• You can manage or cancel a subscription at any time in your Apple Account settings (Settings → your name → Subscriptions), or from the Subscription section of the app’s Settings. Cancelling stops future renewals; you keep access until the end of the period you have already paid for. Deleting the app does not cancel a subscription.
• All purchases are processed by Apple through the App Store. The developer does not handle billing and cannot issue refunds. Refund requests are made to Apple (for example at reportaproblem.apple.com) and are decided by Apple under its published policies.
• Purchases are tied to your Apple Account, not to a device. You can restore them on another device, or after reinstalling, with Restore Purchases in the app.

4. Professional use and verification

The app’s outputs are an aid to professional engineering judgement, not a substitute for it.

HVAC Calq performs standard HVAC commissioning calculations using published correlations and methods. Results depend entirely on the values you enter and on assumptions built into those methods.

You are responsible for verifying every result against the applicable codes, standards, manufacturer data, and project specifications before relying on it. Do not use the app as the sole basis for any design decision, commissioning certificate, safety-related determination, or statutory compliance submission.

The app is intended for use by qualified professionals competent to assess whether a given result is reasonable. It does not provide engineering advice and does not create a professional relationship of any kind between you and the developer.

5. No warranty

The app is provided “as is” and “as available”, without warranty of any kind, whether express, implied, or statutory, including any implied warranty of merchantability, fitness for a particular purpose, accuracy, or non-infringement.

The developer does not warrant that the app will be error-free, that calculations will be accurate in every case, or that it will be available uninterrupted.

Nothing in these terms excludes or limits any warranty or right that cannot lawfully be excluded or limited, including rights you may have as a consumer.

6. Limitation of liability

To the maximum extent permitted by law, the developer shall not be liable for any indirect, incidental, special, consequential, or punitive damages, or for any loss of profits, revenue, data, contracts, or goodwill, arising out of or relating to your use of or inability to use the app — whether based in contract, tort, negligence, strict liability, or otherwise, and whether or not the developer was advised of the possibility of such damages.

To the maximum extent permitted by law, the developer’s total aggregate liability arising out of or relating to the app shall not exceed the greater of the amount you paid for the app in the twelve months preceding the claim, or EUR 50.

Nothing in this section excludes or limits liability for death or personal injury caused by negligence, for fraud or fraudulent misrepresentation, or for any other liability that cannot lawfully be excluded.

7. Support, availability, and changes to the app

The developer alone is responsible for the app and for any maintenance or support of it; Apple has no obligation to provide either. Support is offered by email, at the address below, on a reasonable-efforts basis.

The developer may modify, suspend, or discontinue the app or any of its features at any time, and is under no obligation to provide updates.

8. Termination

These terms remain in effect until terminated. The developer may terminate your licence if you materially breach these terms. On termination you must stop using the app and delete it. Sections 4, 5, 6, 10, 11, and 12 survive termination. Termination does not entitle you to a refund except where Apple’s policies or applicable law provide one.

9. Changes to these terms

These terms may be updated from time to time. The revised terms will be published here with a new “Last updated” date. Continued use of the app after a change constitutes acceptance of the revised terms; if you do not agree to a change, stop using the app.

10. Apple

The following terms are required by Apple and apply in addition to the rest of this agreement.

• These terms are between you and the developer only, not Apple. The developer, not Apple, is solely responsible for the app and its content.
• Apple has no obligation to provide maintenance or support for the app.
• If the app fails to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price of the app to you. To the maximum extent permitted by law, Apple has no other warranty obligation whatsoever with respect to the app, and any other claims, losses, liabilities, damages, costs, or expenses attributable to a failure to conform to a warranty are the developer’s responsibility.
• The developer, not Apple, is responsible for addressing any claim by you or a third party relating to the app or your possession or use of it, including product-liability claims, claims that the app fails to conform to a legal or regulatory requirement, and claims arising under consumer-protection, privacy, or similar law.
• If a third party claims that the app, or your possession or use of it, infringes their intellectual-property rights, the developer, not Apple, is solely responsible for investigating, defending, settling, and discharging that claim.
• You represent and warrant that you are not located in a country subject to a United States Government embargo or designated by the United States Government as a “terrorist supporting” country, and that you are not listed on any United States Government list of prohibited or restricted parties.
• You must comply with any applicable third-party terms when using the app (for example, your wireless-data provider’s terms).
• Apple and its subsidiaries are third-party beneficiaries of these terms and, on your acceptance of them, have the right (and are deemed to have accepted the right) to enforce these terms against you.

11. Governing law

These terms are governed by the laws of Ireland, without regard to its conflict-of-law principles. Nothing in this section deprives you of the protection of mandatory consumer-protection laws of your country of residence, or of the right to bring proceedings in the courts of that country where the law gives you that right.

If you have a dispute with the developer, please contact the developer first so it can be resolved informally.

12. General

If any provision of these terms is held invalid or unenforceable, the remaining provisions remain in full force. A failure to enforce any provision is not a waiver of it. These terms, together with Apple’s standard agreement referred to in section 2, are the entire agreement between you and the developer concerning the app.

13. Contact

Nine Loops Studio Ltd 125 Viewmount, Rathdrum, Wicklow, Ireland hi@nineloops.co