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Castor EDC vs Viedoc

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Castor EDC vs Viedoc: Which is best for you?

Updated December 14, 2025
4.7 (204)
4.4 (95)
Starting Price

Pricing available upon request

Pricing available upon request

Free Trial
Free Version
Screenshots
and Demo
Product Screenshot
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Product Screenshot
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Top Rated
  Features
Electronic Data Capture
4.70
Clinical Study Management
4.65
Patient Monitoring
4.64
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Patient Monitoring
4.72
Electronic Data Capture
4.57
21 CFR Part 11 Compliance
4.56
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Integrations
eCRF
eCRF
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Pros / Cons
  • The overall font size, helps visually as you do not need to scroll up and down allowing for overall viewing of the page.
  • I don't like that every time a change has to be made, a text box appears reminding us of Good Clinical Practices.
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  • The ePRO module empowers patients through a mobile-first interface, offline functionality, and customizable reminders, driving high adherence and direct EDC integration for instant insights.
  • The messages are not marked as "read" so that supposedly unread messages accumulate. If 1 item was changed within a form, the SDV was removed from the entire form, so it had to be revalidated.
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Ease-of-Use
Highest performing feature
in the comparison
4.7/ 5
4.6/ 5
Value for Money
Highest performing feature
in the comparison
4.6/ 5
4.5/ 5
Customer Support
Highest performing feature
in the comparison
4.7/ 5
4.4/ 5
Functionality
Highest performing feature
in the comparison
4.5/ 5
4.1/ 5
Support Options
Email/Help Desk
FAQs/Forum
Knowledge Base
Phone Support
24/7 (Live Rep)
Chat
Email/Help Desk
FAQs/Forum
Knowledge Base
Phone Support
24/7 (Live Rep)
Chat
Training Options
In Person
Live Online
Webinars
Documentation
Videos
In Person
Live Online
Webinars
Documentation
Videos
FrontRunners
N/A
N/A
Advisor
  Recommendations
N/A
N/A
Ideal Customer Size
Small
Medium
Large
Small
Medium
Large
Deployment Options
Cloud, SaaS, Web-Based
Desktop - Mac
Desktop - Windows
Desktop - Linux
Desktop - Chromebook
On-Premise - Windows
On-Premise - Linux
Mobile - Android
Mobile - iPhone
Mobile - iPad
Cloud, SaaS, Web-Based
Desktop - Mac
Desktop - Windows
Desktop - Linux
Desktop - Chromebook
On-Premise - Windows
On-Premise - Linux
Mobile - Android
Mobile - iPhone
Mobile - iPad