# YPrime eCOA vs GSK 217043 eDiary

YPrime eCOA and GSK 217043 eDiary 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, GSK 217043 eDiary every 3 months. The most recent releases landed on October 2, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | YPrime eCOA | GSK 217043 eDiary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (14 ratings)](https://appshunter.io/ios/app/yprime-ecoa/id1521277112/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | — |
| Size | 131 MB | 57 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


### GSK 217043 eDiary

[App page](https://appshunter.io/ios/app/gsk-217043-ediary/id1582817455)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is YPrime eCOA free?

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

### Is GSK 217043 eDiary free?

GSK 217043 eDiary is free to download, with no in-app purchases.

### Do YPrime eCOA or GSK 217043 eDiary have ads?

Neither YPrime eCOA nor GSK 217043 eDiary shows ads.

### Which is updated more often, YPrime eCOA or GSK 217043 eDiary?

YPrime eCOA ships an update every 2 months, and GSK 217043 eDiary every 3 months. Most recently, YPrime eCOA was updated on October 2, 2026 and GSK 217043 eDiary on October 14, 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.*