# Eureka Viewer vs CAS Events

The clearest difference is review sentiment: CAS Events at 100% against Eureka Viewer's 0%. CAS Events also leads on rating (4.8 vs 2.5) and ratings volume (117 vs 11). On price, update cadence, 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.

CAS Events holds the better App Store score, 4.8 against 2.5. That said, the two scores are not equally well evidenced: CAS Events has 117 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 0% of Eureka Viewer's written reviews are positive against 100% of CAS Events's.

Both ship on a similar rhythm, roughly every 3 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Eureka Viewer | CAS Events |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (11 ratings)](https://appshunter.io/ios/app/eureka-viewer/id1532773030/reviews) | **[4.8 (117 ratings)](https://appshunter.io/ios/app/cas-events/id6447979920/reviews)** |
| Number of ratings | 11 | **117** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free | Free |
| Size | 261 MB | 86 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ArchiMedia Advantage Inc.](https://appshunter.io/developer/1532773032) | [Casualty Actuarial Society](https://appshunter.io/developer/525268030) |

## What reviewers say

### Eureka Viewer

[App page](https://appshunter.io/ios/app/eureka-viewer/id1532773030)

This eReader allows secure access and annotation of digitally protected PDF documents from specific platforms. It offers tools like highlighting, underlining, and note-taking, with an automatic index for easy reference and cross-device syncing. Optimized for statistical and mathematical content, it's ideal for intensive study.

**Highlights:** Secure access to protected PDFs, Highlighting and underlining, Margin notes and custom page notes, Automatic annotation index, Cross-device syncing, Optimized for statistical/mathematical content, Offline access (limited terms)

**Features:** Vision Pro support

**In-app purchases:** none


### CAS Events

[App page](https://appshunter.io/ios/app/cas-events/id6447979920)

Access conference schedules, presentations, and speaker details. Take notes directly on slides and engage with attendees through in-app messaging, tweeting, and emailing.

**Highlights:** View conference schedule, Access presentations and speaker details, Take notes on slides, Draw directly on presentation slides, In-app messaging with attendees, Share information via tweet and email

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

**In-app purchases:** none


## Frequently asked questions

### Is Eureka Viewer free?

Eureka Viewer is free to download, with no in-app purchases.

### Is CAS Events free?

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

### Which has better reviews, Eureka Viewer or CAS Events?

CAS Events is rated higher. Eureka Viewer averages 2.5 out of 5 from 11 ratings, while CAS Events averages 4.8 from 117 ratings.

### Do Eureka Viewer or CAS Events have ads?

Neither Eureka Viewer nor CAS Events shows ads.

### Which is updated more often, Eureka Viewer or CAS Events?

Eureka Viewer ships an update every 3 months, and CAS Events every 3 months. Most recently, Eureka Viewer was updated on October 24, 2026 and CAS Events on October 24, 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.*