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Unlock everything
- Unlimited generated practice across all 8 dosage-calculation types
- Exam mode - a timed 25-question mixed test that mirrors the real thing
- Per-type accuracy tracking so you see exactly where you are strong or weak
- Weak-area drilling that queues fresh problems from the types you miss most
- 4 printable reference sheets - formulas, conversion factors and the type checklist laid out for paper
Weekly, yearly and lifetime plans are available - current prices load below. Every lesson, formula, conversion table, calculator and worked example stays free.
What stays free?
Every explainer lesson, formula reference and conversion table, all 8 calculators, the full worked-example library, and a fresh 10-problem set each day stay free forever - no account needed. The calculators are unmetered - there is no daily cap and no counter on any of them.
What does Premium add?
Unlimited fresh practice on any type, a timed 25-question exam that mirrors the real dosage-calculation test, per-type accuracy tracking, a weak-area drill that queues problems from the types you miss most, and 4 printable reference sheets.
Is any dose, formula or conversion factor behind the paywall?
No. Every dose, formula, conversion factor and safety note on DoseDrill is free to read in full on its own page, and always will be - the 8 calculators included. Premium buys study depth and convenience: more practice, the timed exam, the analytics, the drill, and the printable layout. Nothing you could be harmed by not seeing is ever gated.
Are the practice problems reliable?
Every problem is generated deterministically and its answer is computed by the same math core, which is unit-tested against hand-verified answers for all 8 types. That said, DoseDrill is a study tool only - never use it for real medication administration.
How is my access stored?
Purchases are handled by RevenueCat and Stripe. An anonymous purchase id is kept in this browser so DoseDrill recognises your Premium on this device. Keep your receipt email for recovery.
I already subscribed on another browser or device - how do I get Premium here?
Head to Restore access and paste the access code shown on this Premium page (or from your receipt). Premium moves to this browser instantly.
Can I cancel?
Yes. Subscriptions renew automatically and can be cancelled anytime from the link in your receipt email. Lifetime is a one-time payment.
Lost your access code?
Your code is shown on this page whenever you're subscribed here, and it's included in your purchase receipt email. If you can't find it, reply to your receipt email from the address you paid with - your subscription is tied to it and access can be recovered from there.