Castor Connect vs Applied Admin
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
Applied Admin
This clinical research application supports patient enrollment and device setup for specific investigational studies. It is designed exclusively for participants in IRB-approved clinical trials sponsored by Applied Cognition, Inc. All collected health information is protected under HIPAA regulations.
- Clinical study enrollment support
- Investigational device setup
- HIPAA-compliant data protection
- Requires prior study consent
- For IRB-approved research only
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Applied Admin by Applied Cognition, Inc is a clinical research smartphone application that serves as a companion to our Investigational Device (IDE) intended ONLY for use in IRB approved clinical studies sponsored by Applied Cognition. The purpose of this app is to support clinical study enrollment and support device setup. Applied Admin is intended solely for the purposes of clinical research only and any information collected by this application is protected health information covered by HIPAA. The use of this app requires prior consent and approval to participate in clinical studies authorized for use by Applied Cognition, Inc ONLY. Please note that this app is NOT intended for medical use and does NOT provide any diagnosis or treatment. Please refrain from using this app if you have NOT consented to participate in a clinical research study sponsored by Applied Cognition, Inc.
Screenshots
Verdict
The clearest difference is iOS requirement: Castor Connect at 13.0 against Applied Admin's 18.0. 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, Applied Admin every 5 weeks. The most recent releases landed on September 16, 2026 and July 5, 2026 respectively.
| Parameter | Castor Connect | Applied Admin |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Number of ratings | — | 3 — better |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 28 MB | 33 MB |
| Age rating | 4+ | 17+ |
| Developer | Ciwit B.V. | Applied Cognition Inc |
Customer experience
Castor Connect
Applied Admin
In-app purchases
Castor Connect
No in-app purchases
Applied Admin
No in-app purchases
