Castor Connect

Content rating
Everyone
5K+
Downloads
Content rating
Everyone
Learn more
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About this app

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
- Offline data storage ensures connectivity is never a barrier to advancing research

An invitation to take part is required to use this application. You can find more information about Castor surveys or Castor Connect at castoredc.com/epro
Updated on
Apr 17, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Personal info, Health and fitness, and Messages
This app may collect these data types
Personal info, Health and fitness and 4 others
Data is encrypted in transit
Data can’t be deleted

What’s new

- Fixed an issue where photos uploaded in surveys were not visible to site staff after submission.
- Fixed a 400 error that occurred when syncing a survey that was queued because the app was closed during an active sync.
- Fixed an issue where repeatable surveys created by automated workflows were incorrectly hidden, preventing participants from starting new repeat instances.
Content rating
Everyone
Learn more

App support

About the developer
Ciwit B.V.
support@castoredc.com
Fred. Roeskestraat 115 Kamer 311 1076 EE Amsterdam Netherlands
+31 6 22428019