# HCP Studies vs Coltrain

The clearest difference is update cadence: Coltrain at monthly against HCP Studies's every 2 months. Coltrain also leads on ratings volume (17 vs 3). On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for HCP Studies against 5.0 for Coltrain. That said, the two scores are not equally well evidenced: Coltrain has 17 ratings behind it against 3, so its average is the more settled of the two.

HCP Studies ships an update every 2 months, Coltrain monthly. The most recent releases landed on September 15, 2026 and August 16, 2026 respectively.

## The numbers

| Metric | HCP Studies | Coltrain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/hcp-studies/id1104861059/reviews) | [5.0 (17 ratings)](https://appshunter.io/ios/app/coltrain/id1491315335/reviews) |
| Number of ratings | 3 | **17** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 4 MB | 302 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Altura](https://appshunter.io/developer/1104861058) | [Cognition Med, LLC](https://appshunter.io/developer/1491315334) |

## What reviewers say

### HCP Studies

[App page](https://appshunter.io/ios/app/hcp-studies/id1104861059)

This platform allows patients to actively participate in their health journey through clinical studies, surveys, and health programs. It offers a convenient way for healthcare providers to support their patients' engagement with their medical conditions.

**Highlights:** Patient engagement in clinical studies, Healthcare experience surveys, Health programs participation, Support for healthcare providers, Patient-centered solutions

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

**In-app purchases:** none


### Coltrain

[App page](https://appshunter.io/ios/app/coltrain/id1491315335)

A secure, cloud-based messaging platform for healthcare professionals to enhance patient care and collaboration. It allows for case-based discussions and the secure sharing of photos, videos, and documents.

**Highlights:** HIPAA-compliant messaging, Secure cloud-based platform, Case-based discussions, Photo and document sharing, Peer-to-peer communication, Mobile device compatibility

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is HCP Studies free?

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

### Is Coltrain free?

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

### Which has better reviews, HCP Studies or Coltrain?

HCP Studies and Coltrain are both rated 5.0 out of 5 on the App Store, from 3 and 17 ratings respectively.

### Do HCP Studies or Coltrain have ads?

Neither HCP Studies nor Coltrain shows ads.

### Which is updated more often, HCP Studies or Coltrain?

HCP Studies ships an update every 2 months, and Coltrain monthly. Most recently, HCP Studies was updated on September 15, 2026 and Coltrain on August 16, 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.*