# YPrime eCOA vs CSL Behring CSL222_3005

YPrime eCOA and CSL Behring CSL222_3005 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

YPrime eCOA ships an update every 2 months, CSL Behring CSL222_3005 monthly. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | YPrime eCOA | CSL Behring CSL222_3005 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (15 ratings)](https://appshunter.io/ios/app/yprime-ecoa/id1521277112/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | — |
| Size | 131 MB | 70 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Y-Prime](https://appshunter.io/developer/872635320) | [ERT,INC](https://appshunter.io/developer/1160214546) |

## What reviewers say

### YPrime eCOA

[App page](https://appshunter.io/ios/app/yprime-ecoa/id1521277112)

Access clinical study questionnaires on your personal device. Use your enrollment ID to log in and complete required training. The app reminds you of upcoming questionnaires based on your visit schedule, ensuring compliance with study requirements.

**Highlights:** Access study questionnaires, Personal device access, Enrollment ID login, Study-specific questionnaires, Visit schedule reminders, Compliance tracking

**In-app purchases:** none


### CSL Behring CSL222_3005

[App page](https://appshunter.io/ios/app/csl-behring-csl222-3005/id6449864267)

**In-app purchases:** none


## Frequently asked questions

### Is YPrime eCOA free?

YPrime eCOA is free to download, with no in-app purchases.

### Is CSL Behring CSL222_3005 free?

CSL Behring CSL222_3005 is free to download, with no in-app purchases.

### Do YPrime eCOA or CSL Behring CSL222_3005 have ads?

Neither YPrime eCOA nor CSL Behring CSL222_3005 shows ads.

### Which is updated more often, YPrime eCOA or CSL Behring CSL222_3005?

YPrime eCOA ships an update every 2 months, and CSL Behring CSL222_3005 monthly. Most recently, YPrime eCOA was updated on November 3, 2026 and CSL Behring CSL222_3005 on October 27, 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.*