CSU UPAS vs ACOEM Events
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CSU UPAS
This app controls a personal air sampler device. It allows users to customize settings like sample name, flow rate, start time, duration, and GPS location before running the sensor. Data can then be downloaded to your phone or tablet.
- Bluetooth sensor pairing
- Customize sample name
- Adjust flow rate
- Set sensor start time and duration
- Configure GPS settings
- Download UPAS files
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CSU UPAS The controlling app for the personal air sampler developed by the Volckens Research Group Features: - Pair your phone with our sensor through iOS low energy bluetooth connection - Customize sample name before running sensor in running setting - Customize Flow rate in running setting - Customize sensor starting time and running duration - Customize GPS setting - Download UPAS files to phone/iPAD
ACOEM Events
Access conference details, presentations, and exhibitor information. Connect with other attendees, take notes on slides, and draw directly on presentation materials within the event app.
- Conference details access
- Presentation viewing
- Exhibitor information
- Attendee networking
- Note-taking on slides
- Drawing on slides
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**FOR ATTENDEES ONLY** This mobile application allows you to access each conference details. Within the underlying event apps, users can access presentations, exhibitors, and connect with other attendees. Users can also take notes adjacent available presentation slides and draw directly on slides inside the event apps.
Screenshots
Verdict
The clearest difference is ratings volume: ACOEM Events at 103 against CSU UPAS's 2. CSU UPAS's advantage is rating (5.0 vs 4.8) and update cadence (every 2 months vs every 5 months). On price, ads, in-app purchases and monetization model 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.
CSU UPAS holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: ACOEM Events has 103 ratings behind it against 2, so its average is the more settled of the two.
CSU UPAS ships an update every 2 months, ACOEM Events every 5 months. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.
| Parameter | CSU UPAS | ACOEM Events |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.8 (103 ratings) |
| Number of ratings | 2 | 103 — better |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.5 |
| Further details — not scored | ||
| Size | 18 MB | 86 MB |
| Age rating | 4+ | 4+ |
| Developer | Colorado State University | American College of Occupational and Environmental Medicine |
Customer experience
CSU UPAS
ACOEM Events
In-app purchases
CSU UPAS
No in-app purchases
ACOEM Events
No in-app purchases
