Epicentral vs RxAce
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Epicentral
Explore global earthquake patterns with real-time data and historical context. View recent seismic events on interactive maps and lists, with detailed summaries and links to official information. Understand current activity within the framework of historical seismicity.
- Real-time earthquake lists
- Interactive earthquake maps
- Daily, weekly, and monthly data views
- Event summaries and details
- Links to USGS earthquake information
- Historical earthquake catalogs
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Epicentral is a network-based educational application that displays lists and maps of earthquakes that occurred during the last day, week, or month. This version runs on iPhones, iPads, and Macs (as an iPad App) but requires iOS 26+ and macOS 26+. The data are served by the U.S. Geological Survey or the European-Mediterranean Seismological Centre (and three other seismological organizations). List updates take at most a few 10s of seconds. For each event, a summary of the event’s properties and relationship to nearby recent seismicity is presented. When using the USGS feeds, a link to the event-specific USGS earthquake information page is available. Several historical earthquake catalogs (sourced from the US Geological Survey) are included to provide context for more recent earthquakes. These catalogs can be used to put more recent activity in context.
RxAce
Prepare for the NAPLEX exam with practice questions, flashcards, and quizzes covering key pharmacy topics. Study offline with no subscriptions or ads, and track your progress to master the material.
- NAPLEX-style practice questions
- Drug flashcards with mastery system
- Quick quizzes for memorization
- Searchable sig code reference
- Progress tracking and study charts
- Offline study capability
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I'm a pharmacy student, and I built RxAce because I wanted a study app that gets straight to the point — no subscriptions, no accounts, no ads. Pay once, study anywhere, even offline. WHAT'S INSIDE • NAPLEX-STYLE PRACTICE — 60 original exam-style questions across the five areas students struggle with most: Calculations, Pharmacotherapy, Biostatistics & Literature Evaluation, Compounding, and Medication Safety & Counseling. Every question includes a full worked explanation, because the explanation is where the learning happens. • 225 DRUG FLASHCARDS — the brand names, generics, drug classes, and indications you actually see in practice and on the exam. Tap to flip, filter by drug class, and let the built-in mastery system resurface the ones you miss. • QUICK QUIZZES — 10-question rounds: brand→generic, generic→brand, drug→class, and sig codes. Instant feedback on every answer. • SIG CODE REFERENCE — 69 pharmacy abbreviations (frequencies, routes, dosage forms, measures) in a searchable list. Great for interns and technicians too. • PROGRESS TRACKING — accuracy by category, drugs mastered, a 7-day study chart, and a daily streak to keep you honest. Everything runs on your phone. No sign-up, no data collection, no internet required. One price, all of it, forever. Made by a pharmacy student, for pharmacy students. Good luck — you've got this. NAPLEX® is a registered trademark of the National Association of Boards of Pharmacy (NABP). This app is an independent study aid and is not affiliated with or endorsed by NABP. It is a study tool and does not guarantee exam results; always verify clinical information against primary references.
Screenshots
Verdict
The clearest difference is review sentiment: RxAce at 100% against Epicentral's 75%. RxAce also leads on iOS requirement (17.0 vs 26.0). Epicentral's advantage is price ($0.99 vs $2.99). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Epicentral costs $0.99 and RxAce $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Epicentral | RxAce |
|---|---|---|
| Price | $0.99 — better | $2.99 |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 75.3% of reviews | 100.0% of reviews — better |
| Number of ratings | — | 1 — better |
| Update frequency | Monthly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 1 MB |
| Age rating | 4+ | 17+ |
| Developer | Charles Ammon | Karan Kohli |
Customer experience
Epicentral
RxAce
In-app purchases
Epicentral
No in-app purchases
RxAce
No in-app purchases









