# cTrials vs Datamatrix

The clearest difference is review sentiment: Datamatrix at 100% against cTrials's 0%. Datamatrix also leads on rating (4.0 vs 3.0) and iOS requirement (9.0 vs 11.1). cTrials's advantage is update cadence (every 12 months vs every 25 months) and ratings volume (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Datamatrix holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 0% of cTrials's written reviews are positive against 100% of Datamatrix's.

cTrials ships an update every 12 months, Datamatrix every 25 months. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | cTrials | Datamatrix |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (3 ratings)](https://appshunter.io/ios/app/ctrials/id362035301/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/datamatrix/id1005548267/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 12 months** | Every 25 months |
| Monetization | Free | Free |
| Size | 12 MB | 21 MB |
| Requires iOS | 11.1 | **9.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Visual Soft Inc.](https://appshunter.io/developer/336927487) | [Datamatrix Technologies Inc](https://appshunter.io/developer/945598293) |

## 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


### Datamatrix

[App page](https://appshunter.io/ios/app/datamatrix/id1005548267)

This medical dictation app assists doctors by displaying their appointment schedules and enabling them to record patient dictations. Encrypted audio files are sent to a server for transcription into documents.

**Highlights:** Appointment schedule viewing, Patient dictation recording, Encrypted audio file transfer, Transcription service integration, Medical dictation solution

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is cTrials free?

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

### Is Datamatrix free?

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

### Which has better reviews, cTrials or Datamatrix?

Datamatrix is rated higher. cTrials averages 3.0 out of 5 from 3 ratings, while Datamatrix averages 4.0 from 1 ratings.

### Do cTrials or Datamatrix have ads?

Neither cTrials nor Datamatrix shows ads.

### Which is updated more often, cTrials or Datamatrix?

cTrials ships an update every 12 months, and Datamatrix every 25 months. Most recently, cTrials was updated on October 9, 2026 and Datamatrix on October 6, 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.*