Comparison

RxCalc vs PneumoRecs VaxAdvisor

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RxCalc

This medical app provides essential pharmacokinetic calculations for healthcare professionals. It offers a fast interface and comprehensive results to streamline dosing regimen design and patient-specific adjustments for medications like vancomycin and aminoglycosides.

Highlights
  • Pharmacokinetic calculations
  • Vancomycin dosing
  • Aminoglycoside dosing
  • Post-level adjustments
  • Fast interface
  • Comprehensive results
Features
Read full description

RxCalc puts commonly used pharmacokinetic calculations in the palm of your hand with your iPhone or iPod Touch. The fast interface and comprehensive results help you spend less time crunching numbers and more time working on other, more important issues. This tool is designed to help pharmacists, and physicians, quickly perform the most commonly used pharmacokinetic calculations. Calculations for designing new vancomycin and aminoglycoside dosing regimens as well as patient specific post-level adjustments to current dosing regimens are included.

About

PneumoRecs VaxAdvisor

This application offers personalized pneumococcal vaccination guidance based on patient age, vaccination history, and medical conditions. It aligns with the Advisory Committee on Immunization Practices' recommendations for U.S. immunization schedules.

Highlights
  • Patient-specific vaccination recommendations
  • Age-based guidance
  • Vaccination history tracking
  • Underlying medical condition prompts
  • U.S. immunization schedule compliance
Features
Read full description

This is the PneumoRecs VaxAdvisor App created by the Centers for Disease Control and Prevention (CDC) in collaboration with the Georgia Tech Research Institute. PneumoRecs VaxAdvisor provides patient-specific pneumococcal vaccination guidance consistent with the pneumococcal vaccination recommendations of the Advisory Committee on Immunization Practices. Vaccination providers enter a patient’s age and respond to prompts about the patient’s pneumococcal vaccination history and underlying medical conditions. The app then displays patient-specific pneumococcal vaccination recommendations consistent with the recommended U.S. immunization schedule.

Screenshots

RxCalc4 screens
PneumoRecs VaxAdvisor2 screens

Verdict

The call

The clearest difference is price: PneumoRecs VaxAdvisor at Free against RxCalc's $2.99. PneumoRecs VaxAdvisor also leads on update cadence (every 3 months vs every 25 months) and ratings volume (60 vs 5). RxCalc's advantage is rating (4.6 vs 3.4) and review sentiment (53% vs 27%). 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

CostPrice · In-app purchases · Ads · Monetization

PneumoRecs VaxAdvisor is free to download; RxCalc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

RxCalc holds the better App Store score, 4.6 against 3.4. That said, the two scores are not equally well evidenced: PneumoRecs VaxAdvisor has 60 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 53% of RxCalc's written reviews are positive against 27% of PneumoRecs VaxAdvisor's.

UpkeepUpdate frequency

RxCalc ships an update every 25 months, PneumoRecs VaxAdvisor every 3 months. The most recent releases landed on October 31, 2026 and November 3, 2026 respectively.

Scorecard7 real differences · 3 level
RxCalc versus PneumoRecs VaxAdvisor: the parameters behind the verdict, then further details
ParameterRxCalcPneumoRecs VaxAdvisor
Price$2.99Free — better
Rating4.6 (5 ratings) — better3.4 (60 ratings)
Positive reviews53.3% of reviews — better26.9% of reviews
Number of ratings560 — better
Update frequencyEvery 25 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size1 MB6 MB
Age rating12+17+
DeveloperRob FahrniCenters For Disease Control and Prevention

Customer experience

RxCalc

All ratings5 ratings
Positive80.0%
Neutral20.0%
Negative0.0%
Written reviews15 reviews
Positive53.3%
Neutral13.3%
Negative33.3%

PneumoRecs VaxAdvisor

All ratings60 ratings
Positive58.3%
Neutral3.3%
Negative38.3%
Written reviews26 reviews
Positive26.9%
Neutral11.5%
Negative61.5%

In-app purchases

None

RxCalc

No in-app purchases

None

PneumoRecs VaxAdvisor

No in-app purchases

Questions

Is RxCalc free?
RxCalc costs $2.99, with no in-app purchases.
Is PneumoRecs VaxAdvisor free?
PneumoRecs VaxAdvisor is free to download, with no in-app purchases.
Which has better reviews, RxCalc or PneumoRecs VaxAdvisor?
RxCalc is rated higher. RxCalc averages 4.6 out of 5 from 5 ratings, while PneumoRecs VaxAdvisor averages 3.4 from 60 ratings.
Do RxCalc or PneumoRecs VaxAdvisor have ads?
Neither RxCalc nor PneumoRecs VaxAdvisor shows ads.
Which is updated more often, RxCalc or PneumoRecs VaxAdvisor?
RxCalc ships an update every 25 months, and PneumoRecs VaxAdvisor every 3 months. Most recently, RxCalc was updated on October 31, 2026 and PneumoRecs VaxAdvisor on November 3, 2026.

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