Terms of Use

Last updated November 15, 2026

These terms apply when you use dosagepractice.com, run by Sibyl Entertainment Pte Ltd ("we"). By using the site you agree to them.

What the Site Is, and Is Not

Medical disclaimer. For exam practice only. Not clinical guidance. Always follow your institution's policies and a pharmacist's verification. Problems and answers are written to match standard US nursing textbook conventions, and clinical review is ongoing. The site does not replace your program's instruction, a drug reference, or a pharmacist. Never use it to calculate a dose for a real patient.

Exam names such as HESI, ATI and NCLEX are registered trademarks of their respective owners. We prepare students for the math those exams test. We are not affiliated with, endorsed by or connected to those organizations, and we make no claim about their exam content beyond what is publicly known.

Your Account

You need to be at least 13 and, to buy anything, old enough to enter a contract where you live.
One account per person. Please do not share your sign-in with classmates. Schools can license the course for a whole class through the schools page.
Do not try to break the site, copy the problem generators, scrape the content or get around the paywall. The problem text is ours; you may use it to study and nothing else.
We can close an account that breaks these terms, without a refund.

Plans, Payment and Cancellation

Prices are shown in US dollars before you pay and include every lesson and mock exam. Payments are processed by Stripe.
Monthly and annual plans renew automatically at the end of each period until you cancel. Cancel any time from your account page; you keep access until the end of the period you have paid for, and you are not charged again.
The lifetime plan is a single payment for access for as long as Dosage Practice operates. See "Lifetime Access and Service Discontinuation" below.
If we change a price, it applies from your next renewal and we tell you by email beforehand.

How to Cancel a Subscription

You can cancel a monthly or annual plan yourself in under a minute, with no need to contact us:

Sign in and open your account page.
Click Manage subscription. This opens your billing page at Stripe, our payment processor, where your plan, invoices and card are kept.
Choose Cancel plan and confirm.

Your access continues until the end of the period you have already paid for, and nothing further is charged. You can also update your card or download receipts on the same Stripe page. If the button does not work for you, send us a message from the email on your account and we will cancel it for you.

Lifetime Access and Service Discontinuation

Lifetime access means access to Dosage Practice for as long as the service remains operational, with no recurring subscription fees.

In the unlikely event we permanently discontinue the service:

Customers who purchased lifetime access within the preceding 30 days will receive a full refund.
Customers who purchased lifetime access between 30 days and 24 months before closure will receive a prorated refund, calculated over a 24-month period.
Purchases made more than 24 months before closure will not qualify for a shutdown refund, except where required by law.

We will aim to provide at least 60 days' advance notice of any planned permanent closure.

Payments Are Final

All payments are final and non-refundable. Try before you buy: the practice round and the first five problems of lesson 1 are free, and every plan gives the same course, so you know exactly what you are paying for. Monthly and annual plans can be canceled at any time from your account page; access continues to the end of the period you paid for and you are not charged again. Canceling does not refund the current period.

If something went wrong with a payment, for example you were charged twice or paid and cannot get in, send us a message and we will put it right.

If you live in the EU or the UK: your access starts the moment you pay. By paying you ask us to begin at once and you acknowledge that you lose the 14-day right to cancel that would otherwise apply to digital content.

Availability and Changes

We aim to keep the site up all the time, but it is run by a small team and things occasionally break. We may change, add or remove lessons and features. If we remove a substantial part of what you paid for, we will offer a fair remedy, which may include a partial refund.

Limits of Our Responsibility

The site is provided as it is. To the extent the law allows, we are not liable for indirect losses or for anything beyond what you paid us in the twelve months before a claim. Nothing in these terms limits liability that cannot legally be limited. These terms are governed by the laws of Singapore, where we are based, except where the consumer protection law of your own country gives you rights that cannot be taken away.

Privacy

How we handle your data is in the privacy policy, which forms part of these terms.

Contact

Questions, payment problems and account deletion: use the contact form. We reply to the address you give, usually within one business day.