# Perinatal Calculators vs PlexusMD Viewer

The clearest difference is update cadence: PlexusMD Viewer at every 2 days against Perinatal Calculators's monthly. Perinatal Calculators's advantage is iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Perinatal Calculators ships an update monthly, PlexusMD Viewer every 2 days. The most recent releases landed on September 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Perinatal Calculators | PlexusMD Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/perinatal-calculators/id959395503/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Free | — |
| Size | 2 MB | 3 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [David Deschamps](https://appshunter.io/developer/959395502) | [Dermatological Beauty LLC](https://appshunter.io/developer/6788150693) |

## What reviewers say

### Perinatal Calculators

[App page](https://appshunter.io/ios/app/perinatal-calculators/id959395503)

This app provides essential obstetrical and perinatal calculators for healthcare providers. It aids in patient counseling with tools for assessing risks like extreme prematurity and Down Syndrome, and managing conditions like gestational diabetes. All calculations are performed locally without an internet connection.

**Highlights:** Extreme prematurity calculator, VBAC success calculators, Down Syndrome risk assessment, Gestational diabetes insulin calculation, CCAMs CVR calculator, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### PlexusMD Viewer

[App page](https://appshunter.io/ios/app/plexusmd-viewer/id6817133926)

**In-app purchases:** none


## Frequently asked questions

### Is Perinatal Calculators free?

Perinatal Calculators is free to download, with no in-app purchases.

### Is PlexusMD Viewer free?

PlexusMD Viewer is free to download, with no in-app purchases.

### Do Perinatal Calculators or PlexusMD Viewer have ads?

Neither Perinatal Calculators nor PlexusMD Viewer shows ads.

### Which is updated more often, Perinatal Calculators or PlexusMD Viewer?

Perinatal Calculators ships an update monthly, and PlexusMD Viewer every 2 days. Most recently, Perinatal Calculators was updated on September 24, 2026 and PlexusMD Viewer on October 11, 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.*