Terms of Sale

Last updated: November 13, 2026

These terms apply when you buy a subscription to Automatic Building Acoustics (the "Software"). The Software is provided by Morteza Karimi, doing business as Automatic Building Acoustics, Connecticut, USA ("we", "us"). Use of the Software is also governed by the End User License Agreement shown when you first start it.

1. Who sells it

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. Paddle's buyer terms also apply to your purchase.

2. What you buy

A license to use the full Software for one user on one computer, for the period you pay for (one month or one year). The license includes all features, all updates released during that period, and email support. You can move the license to another computer from the License window, which frees the first one. Firms that need several licenses can contact us.

3. Prices and taxes

Prices are shown on our website in US dollars. Paddle adds sales tax or VAT where it applies and shows the total before you pay.

4. Automatic renewal

Your subscription renews automatically at the end of each billing period, at the price shown at checkout, with the payment method you used, until you cancel. You receive a receipt for every payment and a reminder before each annual renewal. If a renewal payment fails, the license ends on its end date.

5. Cancelling

You can cancel at any time from the "Manage subscription" link in your receipt email, at paddle.net, or by emailing us. Your license keeps working until the end of the period you already paid for.

6. Refunds

You can ask for a full refund within 14 days of a purchase or renewal. See our Refund and Cancellation Policy. A refunded license is cancelled.

7. Free trial

New users can try the full Software free for 14 days, once per person, phone number, and computer. No payment is needed for the trial.

8. Internet connection

The Software checks the license with our server when the internet is available and keeps working offline for a limited time after each successful check.

9. Professional responsibility and liability

The Software assists with HVAC noise analysis but does not replace the judgment of a qualified engineer. You are responsible for reviewing all results. The Software is provided "as is", and our total liability is limited to the amount you paid in the 12 months before a claim, as described in the End User License Agreement.

10. Governing law

These terms are governed by the laws of the State of Connecticut, USA. This does not take away any rights you have under the consumer laws of the country you live in.

11. Contact

Morteza Karimi, Automatic Building Acoustics
Email: support@automaticbuildingacoustics.com