# RxCalc vs Cardio Tools

The clearest difference is price: Cardio Tools at Free against RxCalc's $2.99. RxCalc's advantage is in-app purchases (none vs 1). On update cadence, ads, device support and iOS requirement there is nothing between them.

Cardio Tools is free to download; RxCalc costs $2.99 up front. Cardio Tools sells 1 one-off in-app purchase. RxCalc asks for nothing beyond the download.

RxCalc ships an update every 25 months, Cardio Tools every 20 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | RxCalc | Cardio Tools |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/rxcalc/id321211290/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 53.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 20 months** |
| Monetization | Paid | — |
| Size | 1 MB | 2 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [Rob Fahrni](https://appshunter.io/developer/321211293) | [Beijing Fate Med Technology Co., Ltd.](https://appshunter.io/developer/924303274) |

## 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


### Cardio Tools

[App page](https://appshunter.io/ios/app/cardio-tools/id1630861258)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium | $4.99 | one-time |


## Frequently asked questions

### Is RxCalc free?

RxCalc costs $2.99, with no in-app purchases.

### Is Cardio Tools free?

Cardio Tools is free to download, with in-app purchases available.

### Do RxCalc or Cardio Tools have ads?

Neither RxCalc nor Cardio Tools shows ads.

### Which is updated more often, RxCalc or Cardio Tools?

RxCalc ships an update every 25 months, and Cardio Tools every 20 months. Most recently, RxCalc was updated on November 6, 2026 and Cardio Tools 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.*