CATALYST for Learning vs ACOI Events
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CATALYST for Learning
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CATALYST is a longitudinal formative assessment platform based on cognitive learning principles designed to promote more durable and complex learning. CATALYST offers practice-relevant content at spaced intervals with immediate feedback and related reference materials. It also offers mobile accessibility, improvement resources and short questions to fit busy schedules. CATALYST can be customized to meet client requirements and presents an alternative format for low/medium-stakes assessments as well as more high-stakes examinations traditionally administered by specialty medical boards.
ACOI Events
This app provides attendees of the ACOI Event with access to presentations, speaker information, and exhibitor details. Users can take notes directly on slides, draw on content, and communicate with other attendees via in-app messaging, tweeting, and emailing.
- View abstracts and presentations
- Access speaker and exhibitor details
- Take notes on presentation slides
- Draw directly on slides
- In-app messaging with attendees
- Share information via tweet and email
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*** FOR MEETING ATTENDEES ONLY *** The ACOI Events mobile application allows you to view abstracts, presentations, speakers, and exhibitors from the annual ACOI Event. Users can take notes adjacent available presentation slides and draw directly on slides inside the app. Note-taking is also available in the exhibitor module. Additionally, users can share information with attendees and colleagues with in app messaging, tweeting and emailing.
Screenshots
Verdict
The clearest difference is update cadence: ACOI Events at monthly against CATALYST for Learning's every 48 months. CATALYST for Learning's advantage is iOS requirement (10.0 vs 15.5). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CATALYST for Learning ships an update every 48 months, ACOI Events monthly. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.
| Parameter | CATALYST for Learning | ACOI Events |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.9 (51 ratings) — better |
| Number of ratings | — | 51 — better |
| Update frequency | Every 48 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 15.5 |
| Further details — not scored | ||
| Size | 4 MB | 84 MB |
| Age rating | 17+ | 17+ |
| Developer | Internet Testing Systems (ITS) | American College of Osteopathic Internists |
In-app purchases
CATALYST for Learning
No in-app purchases
ACOI Events
No in-app purchases
Questions
Is CATALYST for Learning free?
Is ACOI Events free?
Do CATALYST for Learning or ACOI Events have ads?
Which is updated more often, CATALYST for Learning or ACOI Events?
Other comparisons
