RxCalc: Pharmacy Math Prep

Pharmacy math, mastered — RxCalc is a calculations-only prep app built by a pharmacy student, for pharmacy students. No therapeutics, no law, no filler — just the math that trips people up on exam day.

EIGHT CORE CALCULATION DOMAINS
Dosage & weight-based dosing, renal function (Cockcroft-Gault), IV flow rates & infusions, dilution & alligation, concentration & percent strength, milliequivalents & osmolarity, TPN & nutrition, and BSA/IBW/unit conversions.

EVERY ANSWER SHOWS ITS WORK
Answer a question and see a full numbered, step-by-step worked solution — not just "the answer is X," but exactly how to get there, every time.

UNLIMITED PRACTICE
A built-in generator produces fresh, never-repeating problems in every domain, so you never run out of practice and never just memorize answers.

TIMED QUIZ MODE
Category-balanced quizzes at real exam pacing (about 90 seconds per question), no feedback until the score screen — just like test day.

SMART REVIEW & PROGRESS
Missed problems land in a review queue until you clear them. Per-domain accuracy, streaks, and a weekly activity chart keep you honest.

— Pay once. No subscription, no ads, no account.
— 100% offline. Your data never leaves your phone.

RxCalc is an independent study tool with original problems written by the developer. NAPLEX is a registered trademark of the National Association of Boards of Pharmacy, which does not endorse this app.