# Obstetrics Calculator vs GestAge

The clearest difference is ads: GestAge at none against Obstetrics Calculator's shown. GestAge also leads on update cadence (weekly vs every 2 months). Obstetrics Calculator's advantage is iOS requirement (13.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Obstetrics Calculator sells 2 in-app purchases, starting at $1.99 per month and GestAge sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Obstetrics Calculator ships an update every 2 months, GestAge weekly. The most recent releases landed on October 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Obstetrics Calculator | GestAge |
| --- | --- | --- |
| 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 | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 90 MB | 9 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Alexander Snegirev](https://appshunter.io/developer/1564764021) | [GABRIEL ENRIQUE CASTILLO MARTIN DEL CAMPO](https://appshunter.io/developer/1896526272) |

## 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 |


### GestAge

[App page](https://appshunter.io/ios/app/gestage/id6767968151)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gestage | $29.99 | one-time |


## Frequently asked questions

### Is Obstetrics Calculator free?

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

### Is GestAge free?

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

### Do Obstetrics Calculator or GestAge have ads?

Obstetrics Calculator shows ads; GestAge does not.

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

Obstetrics Calculator ships an update every 2 months, and GestAge weekly. Most recently, Obstetrics Calculator was updated on October 25, 2026 and GestAge on October 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.*