Terms of Service

Last updated November 3, 2026

These terms apply when you use PATLens at patlens.app ("PATLens", "we", "us"). By using the site or creating an account you agree to them. If you don't agree, please don't use PATLens.

What PATLens is

PATLens is an independent practice tool for the Perceptual Ability Test (PAT) section of the Dental Admission Test (DAT). It is not affiliated with, endorsed by, or sponsored by the American Dental Association. DAT is a registered trademark of the American Dental Association. All questions, drawings and explanations on PATLens are original and generated by our software; no official or third-party questions are used.

PATLens is a study aid. We don't promise any test score, admission result or other outcome, and statistics shown on the site are practice analytics, not score predictions.

Who can use it

You must be at least 13 years old to use PATLens. If you are under 18, you need a parent's or guardian's permission to buy a subscription.

Free use and accounts

• A free account (sign-in by emailed code) includes the Daily Challenge. Everything else, including practice in every section and the study plan, is part of PATLens Full Access. We may change what the free plans include; questions you have already answered stay in your history.
• Keep access to your email account secure: anyone who can read your sign-in codes can use your PATLens account.
• One person per account. Don't share an account or resell access.

The iPhone and iPad app

The PATLens app for iPhone and iPad uses the same accounts, free plans and Full Access as patlens.app. Full Access isn't sold inside the app: you buy it on patlens.app (the app opens the checkout page in Safari), and it then works on the website and in the app. Apple is not responsible for PATLens, its content or support, and isn't a party to these terms; Apple's standard terms for apps (the Apple Media Services Terms) also apply to your use of the app.

PATLens Full Access (paid plan)

• Full Access costs $9.99 per month for subscriptions started on or after November 1, 2026 (12:00 a.m. Pacific Time), and $4.99 per month for subscriptions started before then; or $24.99 for 3 months where that plan is offered (plus any tax shown at checkout) and gives unlimited generated practice, tutor mode and timed simulations while it is active.
• It renews automatically at the end of each billing period (1 month, or 3 months on the 3-month plan) until you cancel. You can cancel anytime from Account → Manage Subscription. When you cancel, Full Access continues until the end of the period you already paid for and is not renewed.
• If a free trial is offered at checkout, you are charged when the trial ends unless you cancel before then. Cancelling during the trial costs nothing.
• Payments are processed by Lemon Squeezy, which acts as the merchant of record (the seller on your receipt and card statement) and handles sales tax and VAT. Lemon Squeezy's own terms also apply to your purchase.
• Refunds are covered by our Refund policy: no refunds for partial billing periods.
• If a renewal payment fails, Lemon Squeezy retries it for a short period; if it still fails, Full Access ends.
• Your price stays the same while your subscription is active. A subscription keeps the monthly price it started at for as long as it stays active, including while a renewal payment is being retried. If a subscription ends (for example, you cancel and the paid period runs out) and you subscribe again later, the new subscription is at the price offered at that time.
• Promo codes. If a code gives you a free first month, you pay nothing at checkout, and the subscription then renews at the monthly price shown at checkout unless you cancel before the free month ends.
• We may change the price of Full Access. If a change would affect an existing subscription, we'll email you between 14 and 30 days before the new price applies to your next renewal, with how to cancel, so you can cancel first if you prefer.

Acceptable use

Please don't:

• copy, scrape or download PATLens questions in bulk, or republish or sell them;
• try to get around the free-question limits or Full Access checks, or interfere with the site's security or other users' accounts;
• use automated tools to overload the site; or
• choose a username that is offensive or pretends to be someone else, or use friends and challenges to harass other students.

There is no tolerance for objectionable content or abusive behaviour. You can block any student, and report a student from Friends (⋯ → Report) or by emailing support@patlens.app. We review reports within 24 hours and may reset offensive usernames, turn off friends and challenges for an account, or close it.

We may suspend or close accounts that break these rules. If we close a paid account for reasons other than a breach of these terms, we'll refund the unused part of the current month.

Our content

The PATLens software, questions, drawings and explanations belong to PATLens. You may use them for your own personal study. Sharing a link to a PATLens question with a friend or student is fine.

Availability and changes

We work to keep PATLens available and correct, but the service is provided "as is" without warranties, and it may occasionally be unavailable or contain mistakes. If you think a question is wrong, use "Report question" and we'll check it. We may change or improve features over time.

Limitation of liability

To the extent the law allows, PATLens is not liable for indirect or consequential losses, and our total liability for any claim is limited to the amount you paid us in the 12 months before the claim. Nothing in these terms limits rights you have under consumer protection laws that can't be waived.

Changes to these terms

If we change these terms, we'll update the date above. For important changes affecting subscribers we'll also tell you by email. Continuing to use PATLens after a change means you accept the new terms.

Contact

Questions about these terms: support@patlens.app.