Terms of Service & Privacy Notice

PDF → Mathcad Prime Converter · v3 — July 12, 2026

These terms are an agreement between you and the operator of the PDF to Mathcad Prime Converter (the "service", "we", "us"). By using the service you agree to them.

1. What the service does

The service converts uploaded documents (PDF, images, DOCX) into Mathcad Prime worksheet files (.mcdx). The conversion pipeline is deterministic — the same input produces the same output — and runs entirely on the service's own infrastructure. Your documents are not sent to third-party AI services or external cloud processors. Each conversion includes a built-in self-check report that flags regions the converter is less confident about, so you know exactly what to inspect first.

2. Not engineering services — the engineer of record decides

This is the most important section of these terms, so we state it plainly:

• The service provides document conversion software only. It performs no engineering analysis, design, calculation checking or professional judgment of any kind — it mechanically translates document formatting, symbols and mathematical structure from one file format to another. No professional engineer (PE) reviews your documents or the converted output.
• Every converted worksheet is draft work product. It is provided as-is, with no guarantee of accuracy, completeness or fitness for any purpose. Errors, omissions and misreadings are possible even when the self-check report shows no flags.
• You represent that you are, or are working under the supervision of, a qualified professional (such as a licensed professional engineer) who will independently review and verify every value, equation, unit and result in each converted worksheet before it is used in any engineering, design, construction or other professional context.
• The service is not a substitute for professional judgment, review by a licensed professional engineer, independent calculation checks or your firm's QA/QC procedures.
• Relying on converted output without independent verification is expressly at your own risk, is contrary to the intended use of the service, and is a breach of these terms.
• Nothing in the service output constitutes a certification, seal, stamp or approval of any calculation.

3. No warranty

THE SERVICE AND ALL OUTPUT ARE PROVIDED "AS IS" AND "AS AVAILABLE", WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED. TO THE MAXIMUM EXTENT PERMITTED BY LAW, WE EXPRESSLY DISCLAIM ALL IMPLIED WARRANTIES, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT, AND ANY WARRANTY OF ACCURACY OR COMPLETENESS OF CONVERTED OUTPUT. WE DO NOT WARRANT THAT THE SERVICE WILL BE UNINTERRUPTED, TIMELY, SECURE OR ERROR-FREE, OR THAT CONVERTED OUTPUT WILL BE CORRECT OR COMPLETE.

4. Limitation of liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, OUR TOTAL AGGREGATE LIABILITY FOR ALL CLAIMS ARISING OUT OF OR RELATING TO THE SERVICE IS CAPPED AT THE AMOUNT YOU PAID US FOR THE SERVICE IN THE TWELVE (12) MONTHS PRECEDING THE EVENT GIVING RISE TO THE CLAIM, OR FIFTY US DOLLARS ($50) IF YOU HAVE PAID NOTHING IN THAT PERIOD.

WE ARE NOT LIABLE FOR INDIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL OR EXEMPLARY DAMAGES, LOST PROFITS, LOSS OF DATA OR THE COST OF SUBSTITUTE SERVICES. WITHOUT LIMITING THE FOREGOING, WE ARE EXPRESSLY NOT LIABLE FOR COSTS OF CONSTRUCTION ERRORS, DESIGN DEFECTS, PROFESSIONAL DISCIPLINE OR LICENSURE PROCEEDINGS, OR PROJECT LOSSES ARISING FROM RELIANCE ON CONVERTED OUTPUT THAT WAS NOT INDEPENDENTLY VERIFIED AS REQUIRED BY SECTION 2.

Some jurisdictions do not allow certain warranty disclaimers or limitations of liability, so parts of Sections 3 and 4 may not apply to you; in that case they apply to the maximum extent the law allows.

5. Indemnification

You will defend, indemnify and hold harmless the operator of the service from and against third-party claims, damages and reasonable costs (including attorneys' fees) to the extent arising from (a) your professional or commercial use of converted output, including any use without the independent verification required by Section 2; (b) your violation of these terms; or (c) documents you upload, including claims that they infringe or misappropriate someone else's rights or were uploaded in breach of a confidentiality obligation.

6. Your documents and intellectual property

• You keep full ownership of every document you upload and every converted worksheet you download. We claim no rights to your content.
• You grant us only the minimal, temporary licence needed to run the conversion: uploads are processed and then deleted automatically (see Privacy below).
• Your documents are never used to train models, never shared and never sold.
• You are responsible for having the right to upload the documents you submit (e.g. client confidentiality obligations rest with you).

7. Acceptable use

You agree not to:

• upload content you have no right to process;
• probe, overload, disrupt or attempt to bypass the service's access controls, quotas or billing;
• resell or provide the service to third parties without an appropriate (e.g. firm/enterprise) plan;
• use the service for anything unlawful.

We may suspend access that violates these terms.

8. Accounts, billing, cancellation and refunds

Plans and current prices are listed on the pricing page. Payments and subscriptions are handled by Stripe; we never see or store your card details. We deliberately keep no user database — sign-in works by verifying your email and checking your subscription status directly with Stripe.

• Auto-renewal: paid subscriptions renew automatically at the end of each monthly or annual billing period until cancelled.
• Cancellation: you can cancel anytime through the Stripe billing portal (the "Manage subscription" link in the app). Cancellation takes effect at the end of the current billing period; you keep access until then and there are no further charges.
• Refunds: except where required by law, payments are non-refundable. That said — if the service is not working for you, contact us within 7 days of your first subscription charge and we will refund it. This first-charge guarantee applies once per customer and does not apply to renewal charges.
• Price changes: we may change prices with at least 30 days' notice; changes apply from your next billing period after the notice.
• Taxes: prices exclude taxes; where applicable, sales tax, VAT or similar amounts are added at checkout.

9. Privacy Notice

Engineering calculations are sensitive. The service is built to be stateless, and we treat that as a core feature:

• Short, bounded retention: converted files are available for download for one hour (deleted on first download or after one hour, whichever comes first). Uploads and conversion results may be retained for up to 48 hours solely so we can review conversion quality and improve the converter; after that they are permanently and automatically deleted. Access is restricted to the operator, and your documents are never shared with anyone else or used for any other purpose. There is no long-term document archive and no database of your content. We also do not collect names, addresses or phone numbers, and we never see payment card details (Stripe does).
• No third-party AI: documents are processed by our own deterministic converter on our own infrastructure. Any text recognition for scanned pages runs locally — nothing is sent to external AI or cloud document services.
• Where processing happens: documents are processed transiently on servers located in the United States (hosted on Fly.io) and exist there only for the duration of the conversion and the short retention window above.
• Subprocessors: Fly.io (hosting), Cloudflare (CDN/network and, if enabled, bot protection and analytics), Stripe (payments and subscription records) and, when email sign-in is enabled, an email delivery provider (to send sign-in links only).
• No sale of personal data: we do not sell or rent personal data, and we do not share it for cross-context behavioral advertising.
• Cookies: we use a small number of signed, functional cookies only — beta access, terms acceptance, sign-in session and free-tier counter. No advertising or cross-site tracking cookies.
• Email: if you sign in or subscribe, we process your email address to verify you and to check your subscription with Stripe. It is embedded in your signed session cookie, not stored in a server database.
• Analytics (only if enabled): the app may use PostHog to collect product-usage and session data to help us understand how the site is used and improve it. When analytics is not configured, no analytics code is loaded at all.
• Feedback: if you submit feedback, we store what you wrote, the optional email you provide and, only if you choose to attach it, the technical conversion report (counts, timings, self-check flags — not your document).
• Billing data: handled by Stripe under Stripe's privacy policy. We look up subscription status via Stripe's API; Stripe is the system of record.
• Server logs: standard technical logs (timestamps, IP-level rate-limit counters kept in memory) for security and abuse prevention.
• Deletion requests: contact us via the channels in Section 14 to request deletion of anything we hold (e.g. a document still inside the 48-hour quality-assurance window, feedback records or billing records held by Stripe). Documents past the 48-hour window need no request — deletion already happened automatically.

10. Termination

You may stop using the service at any time (and cancel any subscription per Section 8). We may suspend or terminate access at any time for abuse, non-payment or violation of these terms, or discontinue the service with reasonable notice. Sections 2 through 6 and 11 through 12 survive termination.

11. Governing law and dispute resolution

These terms are governed by the laws of the Commonwealth of Massachusetts, United States, without regard to conflict-of-laws rules. Any dispute that cannot be resolved informally will be brought exclusively in the state or federal courts located in Massachusetts, and both parties consent to their jurisdiction.

Talk to us first: before filing any claim, you agree to contact us (Section 14) with a description of the dispute and give us 30 days to try to resolve it informally. Most issues are fixable faster than a filing.

12. General terms

• Entire agreement: these terms (with the pricing page for your plan) are the entire agreement between you and us about the service and replace any prior discussions.
• Severability: if any provision is found unenforceable, the rest remains in effect, and the provision is enforced to the maximum extent permitted.
• No waiver: not enforcing a provision is not a waiver of the right to enforce it later.
• Assignment: you may not assign these terms without our consent. We may assign them in connection with a merger, acquisition or sale of the business or its assets; they bind and benefit permitted successors and assigns.
• Export & sanctions: you agree to comply with applicable US export-control and sanctions laws and represent that you are not barred from receiving the service under them.
• Eligibility: the service is for business and professional use by users who are at least 18 years old; it is not directed at children.

13. Changes

We may update these terms; material changes bump the version number and you will be asked to agree again before your next conversion. Continued use after that agreement constitutes acceptance.

14. Contact

Questions about these terms or privacy, deletion requests, refund requests or dispute notices: use the in-app "Something wrong?" feedback button, or the contact email listed on the service's landing page.