# PREP Self vs Congenital Calculator

The clearest difference is rating: Congenital Calculator at 5.0 against PREP Self's 3.7. PREP Self's advantage is ratings volume (9 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Congenital Calculator holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: PREP Self has 9 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | PREP Self | Congenital Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (9 ratings)](https://appshunter.io/ios/app/prep-self-assessments-program/id6756599702/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/congenital-calculator/id6770282687/reviews)** |
| Number of ratings | **9** | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Daily | — |
| Monetization | Free | Free |
| Size | 44 MB | 27 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [American Academy of Pediatrics](https://appshunter.io/developer/409863343) | [Subhrajit Lahiri](https://appshunter.io/developer/1896730286) |

## What reviewers say

### PREP Self

[App page](https://appshunter.io/ios/app/prep-self-assessments-program/id6756599702)

Access trusted pediatric learning content through a new mobile app. Build a personalized question bank by selecting blocks from various content areas to fit your learning style and schedule. Earn CME credits and MOC points with each block.

**Highlights:** Trusted PREP content, Customizable question bank, Case-based questions, Earn CME credits, Earn MOC points, Modern user interface

**In-app purchases:** none


### Congenital Calculator

[App page](https://appshunter.io/ios/app/congenital-calculator/id6770282687)

This professional cardiac hemodynamic calculator assists pediatric cardiologists and congenital heart disease specialists. It computes pulmonary and systemic blood flow, vascular resistance, and shunt fractions using the Fick principle during cardiac catheterization. The app generates comprehensive PDF reports for patient data and results.

**Highlights:** Pulmonary and systemic blood flow calculation, Vascular resistance calculation, Shunt fraction calculation, Mixed venous saturation, VO₂ estimation, Shunt detection warning, PDF report generation

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

**In-app purchases:** none


## Frequently asked questions

### Is PREP Self free?

PREP Self is free to download, with no in-app purchases.

### Is Congenital Calculator free?

Congenital Calculator is free to download, with no in-app purchases.

### Which has better reviews, PREP Self or Congenital Calculator?

Congenital Calculator is rated higher. PREP Self averages 3.7 out of 5 from 9 ratings, while Congenital Calculator averages 5.0 from 1 ratings.

### Do PREP Self or Congenital Calculator have ads?

Neither PREP Self nor Congenital Calculator shows ads.

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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.*