# Premier Mobile ePRO vs DFengage

The clearest difference is rating: DFengage at 5.0 against Premier Mobile ePRO's 1.9. Premier Mobile ePRO's advantage is ratings volume (19 vs 1) and iOS requirement (11.0 vs 14.4). 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.

DFengage holds the better App Store score, 5.0 against 1.9. That said, the two scores are not equally well evidenced: Premier Mobile ePRO has 19 ratings behind it against 1, so its average is the more settled of the two.

Premier Mobile ePRO ships an update every 4 months, DFengage every 2 months. The most recent releases landed on July 23, 2026 and June 23, 2026 respectively.

## The numbers

| Metric | Premier Mobile ePRO | DFengage |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.9 (19 ratings)](https://appshunter.io/ios/app/premier-mobile-epro/id1166276072/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dfengage/id6468891878/reviews)** |
| Number of ratings | **19** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 4 MB | 41 MB |
| Requires iOS | **11.0** | 14.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PREMIER RESEARCH INTERNATIONAL LLC](https://appshunter.io/developer/1164185114) | [DFNet Research, Inc.](https://appshunter.io/developer/1353928449) |

## What reviewers say

### Premier Mobile ePRO

[App page](https://appshunter.io/ios/app/premier-mobile-epro/id1166276072)

This application facilitates the collection of patient-reported outcomes during clinical trials. It provides a platform for researchers to gather essential data directly from participants.

**Highlights:** Patient-reported outcome collection, Clinical trial data management, Secure data gathering, Participant data input

**In-app purchases:** none


### DFengage

[App page](https://appshunter.io/ios/app/dfengage/id6468891878)

This app streamlines electronic patient-reported outcomes (ePRO) collection for clinical research. It allows participants to easily report symptoms, complete surveys, and manage study activities from their mobile devices, both online and offline, enhancing data accuracy and participant retention.

**Highlights:** Effortless data collection (symptoms, outcomes, diaries, surveys), Online and offline data capture, Participant reminders for timely data, Multilingual support and personalized timing, Secure and compliant data capture, Integrated with DFdiscover system

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Premier Mobile ePRO free?

Premier Mobile ePRO is free to download, with no in-app purchases.

### Is DFengage free?

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

### Which has better reviews, Premier Mobile ePRO or DFengage?

DFengage is rated higher. Premier Mobile ePRO averages 1.9 out of 5 from 19 ratings, while DFengage averages 5.0 from 1 ratings.

### Do Premier Mobile ePRO or DFengage have ads?

Neither Premier Mobile ePRO nor DFengage shows ads.

### Which is updated more often, Premier Mobile ePRO or DFengage?

Premier Mobile ePRO ships an update every 4 months, and DFengage every 2 months. Most recently, Premier Mobile ePRO was updated on July 23, 2026 and DFengage on June 23, 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.*