# Manual MSD versión pro vs Obstetrics Calculator

Manual MSD versión pro and Obstetrics Calculator both sit at 4.9 stars, but that hides the real split: 94% of Manual MSD versión pro's written reviews are positive against 55% of Obstetrics Calculator's. Manual MSD versión pro also leads on in-app purchases (none vs 2) and ads (none vs shown). Obstetrics Calculator's advantage is update cadence (every 2 months vs every 5 months). On price, rating, device support and iOS requirement there is nothing between them.

Both are free to download. Obstetrics Calculator sells 2 in-app purchases, starting at $1.99 per month. Manual MSD versión pro asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Manual MSD versión pro against 5.0 for Obstetrics Calculator. That said, the two scores are not equally well evidenced: Manual MSD versión pro has 140 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 94% of Manual MSD versión pro's written reviews are positive against 55% of Obstetrics Calculator's.

Manual MSD versión pro ships an update every 5 months, Obstetrics Calculator every 2 months. The most recent releases landed on September 27, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Manual MSD versión pro | Obstetrics Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (140 ratings)](https://appshunter.io/ios/app/manual-msd-version-pro/id1151854781/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/obstetrics-calculator/id1564764019/reviews)** |
| Number of ratings | **140** | 1 |
| Positive reviews | **93.7% of reviews** | 54.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 186 MB | 90 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Merck Sharp & Dohme LLC](https://appshunter.io/developer/718617686) | [Alexander Snegirev](https://appshunter.io/developer/1564764021) |

## What reviewers say

### Manual MSD versión pro

[App page](https://appshunter.io/ios/app/manual-msd-version-pro/id1151854781)

This app provides medical professionals with clear, practical explanations on thousands of conditions across major medical and surgical specialties. It covers etiology, pathophysiology, prognosis, and treatment options, featuring regular updates from over 350 academic physicians.

**Highlights:** Thousands of medical topics, Regularly updated by physicians, Photos and illustrations, Instructional videos, Quizzes and medical news, Expert editorials

**Features:** macOS Compatibility

**In-app purchases:** none


### Obstetrics Calculator

[App page](https://appshunter.io/ios/app/obstetrics-calculator/id1564764019)

This medical app provides a comprehensive suite of tools for calculating gestational age, estimated due dates, and various risk assessments related to pregnancy and women's health. It includes calculators for maternity leave, cervical assessments, and cancer risk estimations, designed for healthcare professionals.

**Highlights:** Gestational age and due date calculation, Multiple calculation methods (LMP, ultrasound, IVF), Maternity leave timeframe estimation, Bishop Score and TOLAC probability, Cancer risk estimations (Breast, Cervical, Ovarian), Follow-up after colposcopy

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ObCalc Pro | $1.99 | per month |
| Disable Ads | $10.99 | one-time |


## Frequently asked questions

### Is Manual MSD versión pro free?

Manual MSD versión pro is free to download, with no in-app purchases.

### Is Obstetrics Calculator free?

Obstetrics Calculator is free to download, with in-app purchases available.

### Which has better reviews, Manual MSD versión pro or Obstetrics Calculator?

Obstetrics Calculator is rated higher. Manual MSD versión pro averages 4.9 out of 5 from 140 ratings, while Obstetrics Calculator averages 5.0 from 1 ratings.

### Do Manual MSD versión pro or Obstetrics Calculator have ads?

Obstetrics Calculator shows ads; Manual MSD versión pro does not.

### Which is updated more often, Manual MSD versión pro or Obstetrics Calculator?

Manual MSD versión pro ships an update every 5 months, and Obstetrics Calculator every 2 months. Most recently, Manual MSD versión pro was updated on September 27, 2026 and Obstetrics Calculator on September 10, 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.*