# YPrime eCOA vs 悦简单

The clearest difference is update cadence: 悦简单 at every 3 weeks against YPrime eCOA's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

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, 悦简单 every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | YPrime eCOA | 悦简单 |
| --- | --- | --- |
| 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 | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 131 MB | 35 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) | [Shaanxi Yiyue State Medicine Co., Ltd](https://appshunter.io/developer/1445114471) |

## 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


### 悦简单

[App page](https://appshunter.io/ios/app/id1642434600)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is YPrime eCOA free?

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

### Is 悦简单 free?

悦简单 is free to download, with no in-app purchases.

### Do YPrime eCOA or 悦简单 have ads?

Neither YPrime eCOA nor 悦简单 shows ads.

### Which is updated more often, YPrime eCOA or 悦简单?

YPrime eCOA ships an update every 2 months, and 悦简单 every 3 weeks. Most recently, YPrime eCOA was updated on November 3, 2026 and 悦简单 on November 3, 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.*