# Obstetrics Calculator vs SGU

The clearest difference is in-app purchases: SGU at none against Obstetrics Calculator's 2. Obstetrics Calculator's advantage is update cadence (every 2 months vs every 28 months) and device support. On price there is nothing between them.

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

Obstetrics Calculator ships an update every 2 months, SGU every 28 months. The most recent releases landed on November 11, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Obstetrics Calculator | SGU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/obstetrics-calculator/id1564764019/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 54.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | — |
| Update frequency | **Every 2 months** | Every 28 months |
| Monetization | Free with in-app purchases | — |
| Size | 90 MB | 34 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 12+ | 4+ |
| Developer | [Alexander Snegirev](https://appshunter.io/developer/1564764021) | [Sociedad Ginecotocologica del Uruguay](https://appshunter.io/developer/1719860938) |

## What reviewers say

### 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 |


### SGU

[App page](https://appshunter.io/ios/app/sgu/id6473803593)

**In-app purchases:** none


## Frequently asked questions

### Is Obstetrics Calculator free?

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

### Is SGU free?

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

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

Obstetrics Calculator ships an update every 2 months, and SGU every 28 months. Most recently, Obstetrics Calculator was updated on November 11, 2026 and SGU 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.*