# RxCalc vs PneumoRecs VaxAdvisor

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.

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.

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.

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.

## The numbers

| Metric | RxCalc | PneumoRecs VaxAdvisor |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/rxcalc/id321211290/reviews)** | [3.4 (60 ratings)](https://appshunter.io/ios/app/pneumorecs-vaxadvisor/id1440647099/reviews) |
| Number of ratings | 5 | **60** |
| Positive reviews | **53.3% of reviews** | 26.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 3 months** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 6 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [Rob Fahrni](https://appshunter.io/developer/321211293) | [Centers For Disease Control and Prevention](https://appshunter.io/developer/439259253) |

## What reviewers say

### RxCalc

[App page](https://appshunter.io/ios/app/rxcalc/id321211290)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### PneumoRecs VaxAdvisor

[App page](https://appshunter.io/ios/app/pneumorecs-vaxadvisor/id1440647099)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*