# Flockhart CYP450 Table vs HIV PrEP Tools

The clearest difference is update cadence: HIV PrEP Tools at every 2 weeks against Flockhart CYP450 Table's every 19 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.

Flockhart CYP450 Table ships an update every 19 months, HIV PrEP Tools every 2 weeks. The most recent releases landed on October 23, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Flockhart CYP450 Table | HIV PrEP Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/flockhart-cyp450-table/id1585841306/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 45 MB | 40 MB |
| Requires iOS | 15.0 | **14.0.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Indiana University](https://appshunter.io/developer/383456988) | [University Of Washington](https://appshunter.io/developer/328228464) |

## What reviewers say

### Flockhart CYP450 Table

[App page](https://appshunter.io/ios/app/flockhart-cyp450-table/id1585841306)

A drug interaction reference tool focusing on the human cytochrome P450 system. It classifies drug substrates by CYP isoform, serving as a teaching and reference guide for healthcare professionals and researchers.

**Highlights:** Drug interaction reference, Cytochrome P450 system focus, Drug substrate classification by isoform, Teaching and reference tool, For healthcare providers and researchers

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

**In-app purchases:** none


### HIV PrEP Tools

[App page](https://appshunter.io/ios/app/hiv-prep-tools/id6475012799)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flockhart CYP450 Table free?

Flockhart CYP450 Table is free to download, with no in-app purchases.

### Is HIV PrEP Tools free?

HIV PrEP Tools is free to download, with no in-app purchases.

### Do Flockhart CYP450 Table or HIV PrEP Tools have ads?

Neither Flockhart CYP450 Table nor HIV PrEP Tools shows ads.

### Which is updated more often, Flockhart CYP450 Table or HIV PrEP Tools?

Flockhart CYP450 Table ships an update every 19 months, and HIV PrEP Tools every 2 weeks. Most recently, Flockhart CYP450 Table was updated on October 23, 2026 and HIV PrEP Tools on October 11, 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.*