# O vs CLINON

The clearest difference is iOS requirement: CLINON at 13.0 against O's 15.0. On price, update cadence, ads and in-app purchases 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 4 weeks, CLINON every 3 weeks. The most recent releases landed on August 27, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | O | CLINON |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/clinon/id6463856903/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 28 MB | 29 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [铨融 (苏州)医药科技开发有限公司](https://appshunter.io/developer/1253822764) | [Shanghai Shanhu Health Technology Co., Ltd.](https://appshunter.io/developer/1705185288) |

## What reviewers say

### O

[App page](https://appshunter.io/ios/app/o-trial-plus/id1423521217)

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

**In-app purchases:** none


### CLINON

[App page](https://appshunter.io/ios/app/clinon/id6463856903)

This app helps patients accurately and reliably record their clinical data for new drug research. It offers features like user login, training, questionnaire completion, medication reminders, and visit schedules to efficiently capture patient experiences in clinical trials.

**Highlights:** Patient data recording, New drug research support, User login and training, Questionnaire completion, Medication reminders, Visit schedule management

**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 CLINON free?

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

### Do O or CLINON have ads?

Neither O nor CLINON shows ads.

### Which is updated more often, O or CLINON?

O ships an update every 4 weeks, and CLINON every 3 weeks. Most recently, O was updated on August 27, 2026 and CLINON on September 13, 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.*