# BUP Initiation vs FOAM Cortex

The clearest difference is update cadence: FOAM Cortex at fortnightly against BUP Initiation's every 30 months. FOAM Cortex also leads on ratings volume (9 vs 1). BUP Initiation's advantage is monetization model (free vs ad-supported) and device support (3 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for BUP Initiation against 5.0 for FOAM Cortex. That said, the two scores are not equally well evidenced: FOAM Cortex has 9 ratings behind it against 1, so its average is the more settled of the two.

BUP Initiation ships an update every 30 months, FOAM Cortex fortnightly. The most recent releases landed on September 29, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | BUP Initiation | FOAM Cortex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/bup-initiation/id1574350314/reviews) | [5.0 (9 ratings)](https://appshunter.io/ios/app/foam-cortex/id6756235238/reviews) |
| Number of ratings | 1 | **9** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 30 months | **Fortnightly** |
| Monetization | **Free** | Ad-supported |
| Size | 33 MB | 60 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Amston Studio LLC](https://appshunter.io/developer/992009108) | [Tom Fadial](https://appshunter.io/developer/1316852248) |

## What reviewers say

### BUP Initiation

[App page](https://appshunter.io/ios/app/bup-initiation/id1574350314)

This app provides healthcare professionals with assessment tools and guidance for initiating buprenorphine treatment in emergency settings. It simplifies the process of buprenorphine initiation for acute care environments.

**Highlights:** Buprenorphine initiation guidance, Assessment tools, Brief negotiation interview, Emergency department use, Acute care setting application

**Features:** macOS Compatibility

**In-app purchases:** none


### FOAM Cortex

[App page](https://appshunter.io/ios/app/foam-cortex/id6756235238)

An AI-powered reference tool for emergency medicine clinicians, providing fast, trustworthy answers at the bedside. It leverages high-quality FOAMed resources and an expanding knowledge base to help users search, interpret, and apply information with confidence.

**Highlights:** Instant AI clinical support, Curated FOAMed knowledge base, Structured clinical summaries, Integrated source transparency, Fast mobile experience, Search across topics and modalities

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

**In-app purchases:** none


## Frequently asked questions

### Is BUP Initiation free?

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

### Is FOAM Cortex free?

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

### Which has better reviews, BUP Initiation or FOAM Cortex?

BUP Initiation and FOAM Cortex are both rated 5.0 out of 5 on the App Store, from 1 and 9 ratings respectively.

### Do BUP Initiation or FOAM Cortex have ads?

Neither BUP Initiation nor FOAM Cortex shows ads.

### Which is updated more often, BUP Initiation or FOAM Cortex?

BUP Initiation ships an update every 30 months, and FOAM Cortex fortnightly. Most recently, BUP Initiation was updated on September 29, 2026 and FOAM Cortex on October 2, 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.*