# O vs 教育邮箱 EduMail

The clearest difference is update cadence: O at every 2 weeks against 教育邮箱 EduMail's monthly. O also leads on iOS requirement (15.0 vs 17.0). 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.

O ships an update every 2 weeks, 教育邮箱 EduMail monthly. The most recent releases landed on October 2, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | O | 教育邮箱 EduMail |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/o-trial-pro/id1658238794/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free | — |
| Size | 56 MB | 2 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [铨融 (苏州)医药科技开发有限公司](https://appshunter.io/developer/1253822764) | [QCloud Technology Co., Ltd.](https://appshunter.io/developer/1742301843) |

## What reviewers say

### O

[App page](https://appshunter.io/ios/app/o-trial-pro/id1658238794)

This app provides an information management solution for clinical trials. It aims to streamline trial processes and data handling for medical professionals. The application is designed for use on iPhones and iPods.

**Highlights:** Clinical trial information management, Streamlined trial processes, Data handling for medical professionals, Mobile solution for iPhone and iPod

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

**In-app purchases:** none


### 教育邮箱 EduMail

[App page](https://appshunter.io/ios/app/edumail/id6801021844)

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

**In-app purchases:** none


## Frequently asked questions

### Is O free?

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

### Is 教育邮箱 EduMail free?

教育邮箱 EduMail is free to download, with no in-app purchases.

### Do O or 教育邮箱 EduMail have ads?

Neither O nor 教育邮箱 EduMail shows ads.

### Which is updated more often, O or 教育邮箱 EduMail?

O ships an update every 2 weeks, and 教育邮箱 EduMail monthly. Most recently, O was updated on October 2, 2026 and 教育邮箱 EduMail on October 24, 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.*