# cTrials vs Clinical Research Trials

The clearest difference is update cadence: cTrials at every 12 months against Clinical Research Trials's every 26 months. Clinical Research Trials's advantage is iOS requirement (8.0 vs 11.1). 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.

cTrials ships an update every 12 months, Clinical Research Trials every 26 months. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | cTrials | Clinical Research Trials |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (3 ratings)](https://appshunter.io/ios/app/ctrials/id362035301/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 12 months** | Every 26 months |
| Monetization | Free | — |
| Size | 12 MB | 14 MB |
| Requires iOS | 11.1 | **8.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Visual Soft Inc.](https://appshunter.io/developer/336927487) | [iHealth Ventures LLC.](https://appshunter.io/developer/305666349) |

## What reviewers say

### cTrials

[App page](https://appshunter.io/ios/app/ctrials/id362035301)

This app provides a mobile interface for searching clinical trials listed on clinicaltrials.gov. It offers user-friendly navigation with basic, advanced, and country-specific search options. Users can save trials to favorites, email listings, and contact investigators.

**Highlights:** Clinical trial search, Basic and advanced search options, Search by country/state, Save trials to favorites, Email trial listings, Contact investigators, Search history

**In-app purchases:** none


### Clinical Research Trials

[App page](https://appshunter.io/ios/app/clinical-research-trials/id511192008)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is cTrials free?

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

### Is Clinical Research Trials free?

Clinical Research Trials is free to download, with no in-app purchases.

### Do cTrials or Clinical Research Trials have ads?

Neither cTrials nor Clinical Research Trials shows ads.

### Which is updated more often, cTrials or Clinical Research Trials?

cTrials ships an update every 12 months, and Clinical Research Trials every 26 months. Most recently, cTrials was updated on November 1, 2026 and Clinical Research Trials on October 26, 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.*