# E vs eCOA

The clearest difference is update cadence: eCOA at monthly against E's every 19 months. E's advantage is iOS requirement (9.0 vs 13.0). 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.

E ships an update every 19 months, eCOA monthly. The most recent releases landed on September 24, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | E | eCOA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ecoa/id1599236633/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Monthly** |
| Monetization | — | Ad-supported |
| Size | 15 MB | 69 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [国强 张](https://appshunter.io/developer/1151273698) | [EClinCloud (Shenzhen) Technology Co., Ltd](https://appshunter.io/developer/1572780199) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-sofa/id1488075654)

**Features:** macOS Compatibility

**In-app purchases:** none


### eCOA

[App page](https://appshunter.io/ios/app/ecoa/id1599236633)

This app facilitates real-time patient feedback collection during clinical trials. It streamlines the process of gathering accurate patient input to speed up drug development, offering features like easy login and timely reminders.

**Highlights:** Real-time patient feedback, Clinical trial data collection, Patient-centered design, Easy login, User training, Scale completion, Timely reminders

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

**In-app purchases:** none


## Frequently asked questions

### Is E free?

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

### Is eCOA free?

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

### Do E or eCOA have ads?

Neither E nor eCOA shows ads.

### Which is updated more often, E or eCOA?

E ships an update every 19 months, and eCOA monthly. Most recently, E was updated on September 24, 2026 and eCOA on October 2, 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.*