# CSAM Events vs BUP Initiation

The clearest difference is ratings volume: CSAM Events at 170 against BUP Initiation's 1. CSAM Events also leads on update cadence (every 13 months vs every 30 months). BUP Initiation's advantage is rating (5.0 vs 4.8). On price, ads, in-app purchases and monetization model there is nothing between them.

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

BUP Initiation holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: CSAM Events has 170 ratings behind it against 1, so its average is the more settled of the two.

CSAM Events ships an update every 13 months, BUP Initiation every 30 months. The most recent releases landed on September 8, 2026 and June 26, 2026 respectively.

## The numbers

| Metric | CSAM Events | BUP Initiation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (170 ratings)](https://appshunter.io/ios/app/csam-events/id1410851310/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bup-initiation/id1574350314/reviews)** |
| Number of ratings | **170** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 13 months** | Every 30 months |
| Monetization | Free | Free |
| Size | 113 MB | 33 MB |
| Requires iOS | 15.5 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [California Society of Addiction Medicine](https://appshunter.io/developer/1410851309) | [Amston Studio LLC](https://appshunter.io/developer/992009108) |

## What reviewers say

### CSAM Events

[App page](https://appshunter.io/ios/app/csam-events/id1410851310)

This app provides meeting attendees with access to course abstracts, presentations, speakers, and exhibitors. Users can take notes directly on slides, draw on them, and utilize note-taking features within the exhibitor module. It also facilitates sharing information through in-app messaging, tweeting, and emailing.

**Highlights:** View abstracts, presentations, speakers, and exhibitors, Take notes on presentation slides, Draw directly on slides, Note-taking in exhibitor module, In-app messaging, Share information via tweeting and emailing

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is CSAM Events free?

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

### Is BUP Initiation free?

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

### Which has better reviews, CSAM Events or BUP Initiation?

BUP Initiation is rated higher. CSAM Events averages 4.8 out of 5 from 170 ratings, while BUP Initiation averages 5.0 from 1 ratings.

### Do CSAM Events or BUP Initiation have ads?

Neither CSAM Events nor BUP Initiation shows ads.

### Which is updated more often, CSAM Events or BUP Initiation?

CSAM Events ships an update every 13 months, and BUP Initiation every 30 months. Most recently, CSAM Events was updated on September 8, 2026 and BUP Initiation on June 26, 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.*