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Privacy Policy

Last updated 18 September 2026. The short version: the software collects nothing, and the only personal data involved in a purchase is handled by Paddle.

Your drawings

Structures you draw and files you open stay on your own computer. The browser version reads files in the page using your browser's own file reader; there is no server here that could receive them. The desktop app reads and writes files on your disk. Neither version uploads a drawing, and neither sends usage data, crash reports or telemetry of any kind.

The desktop app keeps a list of recently opened file paths in your user application data folder so File ▸ Open Recent works. That list never leaves your machine, and deleting the folder removes it.

This website

The site is a set of static files. There are no accounts, no cookies set by us, no analytics and no advertising or tracking scripts.

Two things do involve someone else. The site is served through Cloudflare, which processes request data such as IP addresses in order to deliver pages and protect against attacks. Page fonts are loaded from Google Fonts, which means your browser requests them from Google and Google receives your IP address as part of that request.

Buying the desktop app

Purchases are processed by Paddle.com Market Ltd as merchant of record. Paddle collects what it needs to take payment and meet tax law: your name, email address, billing country and payment details. Payment card details go to Paddle, never to us.

We receive from Paddle the information needed to deliver your purchase and support it, which is your email address and the fact of your order. That is used to send you the installers and to answer you if you write in. It is not sold, rented or shared with anyone, and you will not be added to a mailing list.

Email

If you email purchase@molquill.com or bugreport@molquill.com, that mail and anything attached to it is kept so the conversation can be continued and the problem fixed. A structure file you send as a bug report is used to fix the reader and is not published or passed on.

Your rights

You can ask what is held about you, ask for it to be corrected, or ask for it to be deleted, by emailing purchase@molquill.com. Requests about payment records may need to go to Paddle, since Paddle is the merchant of record and holds them; we will tell you if that is the case.

Records connected with a purchase are kept as long as tax and accounting law requires. Email correspondence is kept while it is useful and deleted when it is not.

Who to contact

MolQuill is run by Ryan Williams, a sole proprietor in the United States. For anything on this page: purchase@molquill.com.

MolQuill © 2026 Ryan Williams. All rights reserved. An independent product, not affiliated with, endorsed by or sponsored by any other software vendor. CDX and CDXML are file formats originating with ChemDraw, a trademark of its respective owner; the names appear here only to identify those formats.  Terms  Refunds