# Obstetrics Calculator vs rsLog

The clearest difference is in-app purchases: rsLog at none against Obstetrics Calculator's 2. rsLog also leads on ads (none vs shown). Obstetrics Calculator's advantage is iOS requirement (13.0 vs 15.6). On price, update cadence 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. rsLog asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Obstetrics Calculator | rsLog |
| --- | --- | --- |
| 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 | **No** |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 90 MB | 31 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Alexander Snegirev](https://appshunter.io/developer/1564764021) | [Emmanuel Kuffour](https://appshunter.io/developer/1675240924) |

## 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 |


### rsLog

[App page](https://appshunter.io/ios/app/rslog/id6446381025)

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

**In-app purchases:** none


## Frequently asked questions

### Is Obstetrics Calculator free?

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

### Is rsLog free?

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

### Do Obstetrics Calculator or rsLog have ads?

Obstetrics Calculator shows ads; rsLog does not.

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

Obstetrics Calculator ships an update every 2 months, and rsLog every 2 months. Most recently, Obstetrics Calculator was updated on November 7, 2026 and rsLog on November 3, 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.*