Comparison

ePRO by Mobile4D vs DFengage

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ePRO by Mobile4D

Read full description

The ePRO app is developed as a student project at the University Bremen in Germany in cooperation with a project at the Mahidol University in Thailand. Our system’s purpose is to provide a digital way of creating and sharing surveys with the participant of studies. These studies are conduct by our partners at the Mahidol University and their associates. The app is only designed for answering these surveys by the participants. The researchers use a web dashboard developed by us for creating and administrating the surveys. Therefore, the intended target audience are study participants of the projects at the Mahidol University. Since these studies cover long term developments of different events (without being able to go into too much detail here), they are always started in person with follow-up surveys in subsequent weeks and/or months. These initial in-person meetings are where the participants are provided with the QR code required for logging into their account in the app. The app is not intended for use by the general public outside of these studies. The basis for collecting the survey answers is covered by standard agreements between the researchers and the participants as common for academic studies.

About

DFengage

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
Read full description

Welcome to DFengage, the ultimate solution for streamlined electronic patient-reported outcomes (ePRO) collection in clinical research. Capture data effortlessly, ditch paper diaries, streamline manual entry, and boost retention rates. Easy, Engaging Participant Experience 1. Install DFengage from the app store 2. Login to your account, provided by the research team 3. Receive a welcome message and instructions 4. Complete today’s activities 5. Receive notifications for new activities when they’re ready Revolutionize your data collection process with our intuitive mobile app designed for seamless interaction between researchers and study participants. Reduce in-person clinic visits and empower participants to report their symptoms, answer surveys, and complete questionnaire from their own device, online or offline, wherever they are. Key Features Effortless Data Collection: Collect symptoms, outcomes, diaries, and surveys via study participants' mobile devices, online or offline, reducing site staff time during in-person or phone visits. Timeliness: Participants receive reminders about new and overdue activities, ensuring timely collection of study data. Flexibility: Collect data in multiple languages, personalize activity timing, and capture multiple activities per day. Security and Compliance: Ensure secure and compliant direct data capture from study participants. Data Validation: Ensure data quality without sacrificing user-friendliness with straightforward data checks. DFdiscover Integration: Fully integrated with the DFdiscover system for a streamlined and comprehensive EDC + ePRO experience. DFengage simplifies the data collection process, empowering researchers and participants alike to contribute efficiently and effectively to clinical research. Join the forefront of innovative data collection today!

Screenshots

ePRO by Mobile4D4 screens
DFengage4 screens

Verdict

The call

The clearest difference is update cadence: ePRO by Mobile4D at fortnightly against DFengage's every 2 months. ePRO by Mobile4D also leads on iOS requirement (12.0 vs 14.4). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

ePRO by Mobile4D ships an update fortnightly, DFengage every 2 months. The most recent releases landed on October 7, 2026 and September 29, 2026 respectively.

Scorecard2 real differences · 7 level
ePRO by Mobile4D versus DFengage: the parameters behind the verdict, then further details
ParameterePRO by Mobile4DDFengage
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyFortnightly — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better14.4
Further details — not scored
Size63 MB41 MB
Age rating4+4+
DeveloperUniversitat Bremendatafax

In-app purchases

None

ePRO by Mobile4D

No in-app purchases

None

DFengage

No in-app purchases

Questions

Is ePRO by Mobile4D free?
ePRO by Mobile4D is free to download, with no in-app purchases.
Is DFengage free?
DFengage is free to download, with no in-app purchases.
Do ePRO by Mobile4D or DFengage have ads?
Neither ePRO by Mobile4D nor DFengage shows ads.
Which is updated more often, ePRO by Mobile4D or DFengage?
ePRO by Mobile4D ships an update fortnightly, and DFengage every 2 months. Most recently, ePRO by Mobile4D was updated on October 7, 2026 and DFengage on September 29, 2026.

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