Approximatrix, LLC, the owner of WebFortran, adheres to a strict privacy policy surrounding its WebFortran product. Approximatrix does not share any information relating to our users with any other parties.

WebFortran User Privacy Policy

This Policy was last modified on April 11, 2024.

Approximatrix maintains contact information for all users to allow the use of the service. For billing purposes, payment information is stored by our payment processor, Stripe, solely to facilitate subscriptions to the service. We do not share any of this information with others and we do not use any of this information for marketing purposes.

Source code written by end users must be transferred to our servers for compilation. This source code is sent via an encrypted transfer and stored temporarily on disk while compilation is performed. The source code is deleted immediately following compilation. We do not store any source code on our servers. All source code is stored only in the end user's browser's local storage system. Source code is only ever transferred to the server for compilation at the end user's explicit request.

Executables created by the user's request for compilation reside on our server as long as the user is logged in to their WebFortran account. The executable is deleted if: 1) the end user logs out or 2) the end user requests compilation again, deleting any existing executables. Executables created by a user are only accessible by said user.

Given the statements above, Approximatrix does not guarantee the security of user's source code or executables based on the transfers described above. While we strive to secure user's Fortran source code and executables, we do not provide any guarantee that a user's source code or resultant executable will remain private. Approximatrix always encourages users to weigh the risks of transmitting proprietary Fortran source code to any third-party host.

WebFortran Terms of Service

These Terms were last modified on September 8, 2022.

Please read these Terms of Service completely. This Agreement documents the legally binding terms and conditions attached to access to and use of the WebFortran service.

By using or accessing the Site in any way or remitting payment to Approximatrix, LLC, you are agreeing to be bound by these Terms of Service.

Server Availability

Approximatrix, LLC shall make every effort to maintain server availability and uptime. However, no guarantee of server availability or accessibility is made by Approximatrix. Periods during which the WebFortran service is unavailable are not subject to reimbursement by Approximatrix.

Intellectual Property

The Site and all of its original content are the sole property of Approximatrix, LLC and are, as such, fully protected by the appropriate international copyright and other intellectual property rights laws. The user agrees not to attempt to reverse engineer the site or service.

User Support

Approximatrix, LLC will provide support to users via email or forums in a timely manner, normally responding within 24 hours, though this time frame is not guaranteed. Approximatrix staff will attempt to resolve issues when possible given the available information provided by the end user.


Approximatrix, LLC reserves the right to terminate your access to the Site, without any advance notice. This termination may be accompanied by a refund, adjusted by the lapsed subscription period, at the request of the customer.

Governing Law

This Agreement is governed in accordance with the laws of the state of Ohio, United States.

Changes to This Agreement

Approximatrix, LLC reserves the right to modify these Terms of Service at any time. We do so by posting and drawing attention to the updated terms on the Site.

Therefore, we ask that you check and review this Agreement for such changes on an occasional basis. Should you not agree to any provision of this Agreement or any changes we make to this Agreement, please contact Approximatrix support.

Contact Us

If you have any questions about this Agreement, please feel free to contact us at