# Obstetrical Calculator vs OB Wheel+

The clearest difference is in-app purchases: OB Wheel+ at none against Obstetrical Calculator's 4. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Obstetrical Calculator sells 4 one-off in-app purchases. OB Wheel+ asks for nothing beyond the download.

## The numbers

| Metric | Obstetrical Calculator | OB Wheel+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ob-wheel-plus/id6757197344/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 20 months | — |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 4 MB | 11 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Manuel Posadas](https://appshunter.io/developer/528175386) | [Andrew Yu](https://appshunter.io/developer/328693314) |

## What reviewers say

### Obstetrical Calculator

[App page](https://appshunter.io/ios/app/obstetrical-calculator/id590285512)

This medical application provides essential calculations for obstetrics. It serves as a clinical support tool, but all results require confirmation by a healthcare professional. It is not a replacement for professional medical judgment.

**Highlights:** Obstetrical calculations, Clinical support tool, Requires professional confirmation, Supports iOS devices

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Give a little | $0.99 | one-time |
| Remove Advertisements | $0.99 | one-time |
| Give a lot | $4.99 | one-time |
| Make my day | $9.99 | one-time |


### OB Wheel+

[App page](https://appshunter.io/ios/app/ob-wheel-plus/id6757197344)

This medical app offers precise pregnancy calculations for healthcare professionals and expectant parents. It features multiple calculation modes, projected gestational age, and a timeline of key clinical milestones and screenings. Users can also filter milestones by trimester and compare fetal growth with relatable size comparisons.

**Highlights:** Multiple calculation modes (LMP, EDD, IVF, GA), Projected gestational age calculation, Clinical milestone timeline, Trimester filtering, Fetal size comparisons

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Obstetrical Calculator free?

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

### Is OB Wheel+ free?

OB Wheel+ is free to download, with no in-app purchases.

### Do Obstetrical Calculator or OB Wheel+ have ads?

Both Obstetrical Calculator and OB Wheel+ show ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*