# Premier Mobile ePRO vs UCB_Possibility

The clearest difference is update cadence: UCB_Possibility at monthly against Premier Mobile ePRO's every 4 months. Premier Mobile ePRO's advantage is iOS requirement (11.0 vs 17.0). 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.

Premier Mobile ePRO ships an update every 4 months, UCB_Possibility monthly. The most recent releases landed on October 26, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Premier Mobile ePRO | UCB_Possibility |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (20 ratings)](https://appshunter.io/ios/app/premier-mobile-epro/id1166276072/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free | — |
| Size | 4 MB | 165 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [PREMIER RESEARCH INTERNATIONAL LLC](https://appshunter.io/developer/1164185114) | [ERT,INC](https://appshunter.io/developer/1160214546) |

## 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


### UCB_Possibility

[App page](https://appshunter.io/ios/app/ucb-possibility/id6754910365)

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

**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 UCB_Possibility free?

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

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

Neither Premier Mobile ePRO nor UCB_Possibility shows ads.

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

Premier Mobile ePRO ships an update every 4 months, and UCB_Possibility monthly. Most recently, Premier Mobile ePRO was updated on October 26, 2026 and UCB_Possibility on October 1, 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.*