# OB ToolBox vs Nipomo Rexall Pharmacy

The clearest difference is update cadence: OB ToolBox at every 3 weeks against Nipomo Rexall Pharmacy's every 45 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OB ToolBox ships an update every 3 weeks, Nipomo Rexall Pharmacy every 45 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | OB ToolBox | Nipomo Rexall Pharmacy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ob-toolbox/id1565667366/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 45 months |
| Monetization | Free | — |
| Size | 56 MB | 80 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Frederick Blair](https://appshunter.io/developer/1565667368) | [Nipomo Pharmacy, Inc.](https://appshunter.io/developer/1573819191) |

## What reviewers say

### OB ToolBox

[App page](https://appshunter.io/ios/app/ob-toolbox/id1565667366)

This app offers a quick reference for essential medical values related to fetal growth, amniotic fluid, and Doppler indices. It includes calculators for preterm birth prediction, cesarean risk, and risk of stillbirth or miscarriage.

**Highlights:** Fetal growth reference values, Estimated fetal weight calculator, Amniotic fluid and Doppler indices, Bishop score reference, Preterm birth predictor, Cesarean risk calculator, Stillbirth and miscarriage risk calculators

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

**In-app purchases:** none


### Nipomo Rexall Pharmacy

[App page](https://appshunter.io/ios/app/nipomo-rexall-pharmacy/id1573819189)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OB ToolBox free?

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

### Is Nipomo Rexall Pharmacy free?

Nipomo Rexall Pharmacy is free to download, with no in-app purchases.

### Do OB ToolBox or Nipomo Rexall Pharmacy have ads?

Neither OB ToolBox nor Nipomo Rexall Pharmacy shows ads.

### Which is updated more often, OB ToolBox or Nipomo Rexall Pharmacy?

OB ToolBox ships an update every 3 weeks, and Nipomo Rexall Pharmacy every 45 months. Most recently, OB ToolBox was updated on November 3, 2026 and Nipomo Rexall Pharmacy 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.*