Castor Connect vs INFORMUS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Castor Connect
This app allows study participants to securely complete electronic patient-reported outcome (ePRO) questionnaires on their mobile devices. It offers offline data storage and manual syncing for flexibility. Access requires an invitation or activation code.
- ePRO questionnaire completion
- Offline data storage
- Manual data sync
- Secure participant data
- Native mobile application
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Castor Connect enables study participants to complete Castor Surveys (ePRO questionnaires) via a native mobile application. - Compliant, secure, user-friendly ePRO solution - Configured using our EDC product to be as simple or complex as your study demands - Flexible and secure, offline data storage with manual sync and native security mean participants can submit their study data whenever they need An invitation to take part or the scanning of a participant-specific activation code is required to use this application. You can find more information about Castor surveys or Castor Connect at castoredc.com/epro
INFORMUS
This app helps clinical trial participants manage their study information, including treatment plans, appointments, and payments. It allows users to track daily dosage results and access helpful study resources through a user-friendly interface.
- Access treatment plans and appointments
- View payment information
- Track daily dosage results
- Access study information
- User-friendly interface
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INFORMUS’ user-friendly interface provides easy access to study information, dosage and appointment reminders, payments and more! Enhance your study experience with one simple app: • Access treatment plan and appointments • Access to payment information • Enter and track your daily dosage results • Access to helpful study information Stay engaged with your study using INFORMUS. *This app is for clinical participants only.*
Screenshots
Verdict
The clearest difference is iOS requirement: Castor Connect at 13.0 against INFORMUS's 15.1. On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Castor Connect ships an update every 2 months, INFORMUS monthly. The most recent releases landed on September 16, 2026 and June 10, 2026 respectively.
| Parameter | Castor Connect | INFORMUS |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.3 (8 ratings) — better |
| Number of ratings | — | 8 — better |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 28 MB | 46 MB |
| Age rating | 4+ | 17+ |
| Developer | Ciwit B.V. | Caerus Marketing Group LLC |
Customer experience
Castor Connect
INFORMUS
In-app purchases
Castor Connect
No in-app purchases
INFORMUS
No in-app purchases
