Castor
126
Reviews
4.6
Star rating
#9
Rank in Electronic Data Capture (EDC)
Pros and cons
Pros
- Ease of Use
- Navigation Ease
- Data Management
- Design Ease
- Organization
- Setup Ease
Cons
- Data Management Issues
- Login Issues
- Slow Performance
- Poor Navigation
- Inadequate Reporting
Traffic & LLM citations
Source: G2 review data
Winning from
Losing to
Key stats
—
75
Small Business
1
Adoption by company size
| Segment | Share of reviews |
|---|---|
| Small Business | 48.4% |
| Mid-Market | 15.9% |
| Enterprise | 35.7% |
Quarterly history
| Quarter | Reviews | Star rating |
|---|---|---|
| 2025 Q2 | 10 | 4.3 |
Satisfaction ratings
Ease of Use9.4
Ease of Setup8.9
Quality of Support9.3
Meets Requirements9.3
What reviewers say
Site is clean and not too busy.
4.0
“The questions are numbered according to the work sheets. Data collection progress list is very clear.”
Castor is best for collecting data
5.0
“It is very well organized. It captures data in a structured format.”
A user friendly database
4.0
“Castor is a very easy to use databse. It is very simple to reach out and you can use it from evry computer without installing an app. During our study I used it several times a day. There is no need for an intensive learning of implementation, because it is so easy to use and to ”