# cTrials vs Docviser

The clearest difference is update cadence: Docviser at every 2 months against cTrials's every 12 months. cTrials's advantage is iOS requirement (11.1 vs 15.1). 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, Docviser every 2 months. The most recent releases landed on June 11, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | cTrials | Docviser |
| --- | --- | --- |
| 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 2 months** |
| Monetization | Free | — |
| Size | 12 MB | 165 MB |
| Requires iOS | **11.1** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [visual soft, inc](https://appshunter.io/developer/336927487) | [Docviser SRL](https://appshunter.io/developer/1611891461) |

## 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


### Docviser

[App page](https://appshunter.io/ios/app/docviser/id1611891459)

**In-app purchases:** none


## Frequently asked questions

### Is cTrials free?

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

### Is Docviser free?

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

### Do cTrials or Docviser have ads?

Neither cTrials nor Docviser shows ads.

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

cTrials ships an update every 12 months, and Docviser every 2 months. Most recently, cTrials was updated on June 11, 2026 and Docviser on September 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*