# eMPendium vs Obstetrics Calculator

The clearest difference is rating: Obstetrics Calculator at 5.0 against eMPendium's 3.4. eMPendium's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price, update cadence, 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. eMPendium asks for nothing beyond the download.

Obstetrics Calculator holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: eMPendium has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 82% of eMPendium's written reviews are positive against 55% of Obstetrics Calculator's, so the app with the better star average is not the one people write more warmly about.

eMPendium ships an update every 3 months, Obstetrics Calculator every 2 months. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | eMPendium | Obstetrics Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (5 ratings)](https://appshunter.io/ios/app/empendium/id440460559/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/obstetrics-calculator/id1564764019/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | **82.4% of reviews** | 54.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 17 MB | 90 MB |
| Requires iOS | 13 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [MEDYCYNA PRAKTYCZNA SP Z O O](https://appshunter.io/developer/1797658051) | [Alexander Snegirev](https://appshunter.io/developer/1564764021) |

## What reviewers say

### eMPendium

[App page](https://appshunter.io/ios/app/empendium/id440460559)

This modular medical application provides access to a comprehensive Polish drug reference, a digital handbook of internal diseases, and classifications for medical procedures and diseases. It also includes expert commentary, medical calculators, news, and clinical guidelines for healthcare professionals.

**Highlights:** Comprehensive Polish Drug Reference, Digital Handbook of Internal Diseases, ICD-10 and ICD-9 Classifications, Expert Medical Commentary, Medical Calculators, Medical News and Guidelines

**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 eMPendium free?

eMPendium 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, eMPendium or Obstetrics Calculator?

Obstetrics Calculator is rated higher. eMPendium averages 3.4 out of 5 from 5 ratings, while Obstetrics Calculator averages 5.0 from 1 ratings.

### Do eMPendium or Obstetrics Calculator have ads?

Obstetrics Calculator shows ads; eMPendium does not.

### Which is updated more often, eMPendium or Obstetrics Calculator?

eMPendium ships an update every 3 months, and Obstetrics Calculator every 2 months. Most recently, eMPendium was updated on October 24, 2026 and Obstetrics Calculator on October 30, 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.*