1. Introduction

AutoCalcs ("we", "our", or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our cloud-based finite element analysis software service.

2. Information We Collect

Personal Information

When you create an account through Clerk (our authentication provider), we may collect:

Email address
Name
Profile picture (if provided)
Authentication credentials

Usage Data

We automatically collect certain information when you use the Service:

Device information (browser type, operating system)
IP address
Pages visited and features used
Time and date of visits
Referring website addresses

User Content

We store the models, projects, and data you create using the Service in our database (powered by Convex). This data is necessary to provide the Service and allow you to access your work across sessions.

3. How We Use Your Information

We use the information we collect to:

Provide, operate, and maintain the Service
Process your transactions and manage your subscriptions
Send you technical notices and support messages
Respond to your comments and questions
Send you product updates, newsletters, and marketing communications about our features or services (you may opt-out of these at any time via the link in our emails)
Analyse usage patterns to improve the Service
Detect and prevent fraud or abuse
Comply with legal obligations

Legal Basis for Processing (EEA/UK Users)

If you are located in the European Economic Area or the United Kingdom, we process your personal data on the following legal bases under the GDPR:

Contractual necessity — To provide the Service, manage your account, and process payments (Art. 6(1)(b))
Legitimate interests — To analyse usage patterns, improve the Service, communicate product updates to existing users, and prevent fraud, where these interests are not overridden by your rights (Art. 6(1)(f))
Legal obligation — To comply with applicable laws and regulations (Art. 6(1)(c))
Consent — Where you have given explicit consent for a specific purpose, such as signing up for marketing communications, which you may withdraw at any time (Art. 6(1)(a))

4. Third-Party Services

We use the following third-party services (acting as data processors on our behalf) to operate AutoCalcs:

Clerk — Authentication and user management
Stripe — Payment processing (via Clerk)
Convex — Database and backend infrastructure
Vercel — Web hosting, deployment, and privacy-friendly analytics

We use Vercel Analytics to collect anonymised, aggregated usage data (e.g., page views and visitor counts). Vercel Analytics does not use cookies and does not collect personally identifiable information.

These services process data on our behalf under data processing agreements. Each service has its own privacy policy, and we encourage you to review them.

5. Data Storage and Security

We implement appropriate technical and organizational measures to protect your personal information against unauthorized access, alteration, disclosure, or destruction. However, no method of transmission over the Internet or electronic storage is 100% secure.

Your data is stored on secure servers provided by our infrastructure partners (Convex and Vercel). These servers may be located in the United States or other countries outside your country of residence. Where data is transferred outside the European Economic Area or United Kingdom, our service providers maintain appropriate safeguards such as Standard Contractual Clauses (SCCs) approved by the European Commission, or operate under equivalent data protection frameworks.

6. Data Retention

We retain your personal information for as long as your account is active or as needed to provide you with the Service. We may retain certain information after account deletion for legal compliance, dispute resolution, or legitimate business purposes.

7. Your Rights

Depending on your location, you may have the following rights regarding your personal information:

Access — Request a copy of your personal data
Correction — Request correction of inaccurate data
Deletion — Request deletion of your personal data
Portability — Request transfer of your data in a machine-readable format
Objection — Object to processing based on legitimate interests
Restriction — Request that we limit how we process your data
Withdraw consent — Where processing is based on consent (including marketing communications), withdraw it at any time. You can opt-out of marketing emails by clicking the "unsubscribe" link at the bottom of any email we send you

To exercise these rights, please contact us at admin@autocalcs.com. We will respond to your request within 30 days (or within the timeframe required by applicable law).

If you are located in the European Economic Area or the United Kingdom and believe that our processing of your personal data violates applicable data protection law, you have the right to lodge a complaint with your local Data Protection Authority.

8. Cookies and Tracking

We use only essential cookies that are strictly necessary for the Service to function:

Authentication cookies — Maintain your login session (set by Clerk)
Preference cookies — Remember your settings (e.g., unit system, theme)

We do not use any third-party advertising or marketing cookies. Our analytics (Vercel Analytics) are cookie-free and do not track individual users.

You can control cookies through your browser settings, but disabling essential cookies may affect the functionality of the Service (e.g., you may not be able to stay logged in).

9. Children's Privacy

The Service is not intended for children under 13 years of age (or under 16 in the European Economic Area). We do not knowingly collect personal information from children under these ages. If we become aware that we have collected personal information from a child below the applicable age, we will take steps to delete that information.

10. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date. Your continued use of the Service after any changes constitutes acceptance of the new Privacy Policy.

11. Contact Us

If you have any questions about this Privacy Policy, our data practices, or wish to exercise your data protection rights, please contact us at:

Email: admin@autocalcs.com

This is also the contact point for all data protection enquiries, including requests from EEA and UK residents.