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Castor EDC vs Google Forms Comparison (2026)

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Castor EDC

Google Forms

Overview

The only GCP & 21 CFR compliant system that's affordable for every researcher and has all the features of expensive systems. Start now.

Google Forms is a free form builder tool that enables users to create surveys and questionnaires online in order to collect and organize information

Platforms supported

Web-based
iPhone app
Android app
Windows Phone app

Typical customers

Freelancers
Small businesses
Mid size businesses
Large enterprises

Customer support

Phone
Online
Knowledge base
Video tutorials

view more detailsview details

Platforms supported

Web-based
iPhone app
Android app
Windows Phone app

Typical customers

Freelancers
Small businesses
Mid size businesses
Large enterprises

Customer support

Phone
Online
Knowledge base
Video tutorials

view more detailsview details

Video & Screenshots

Pricing

Starting from

No pricing info

Free trial available
Credit cardless trial
Free account
Subscription based

Starting from

Free

Free trial available
Credit cardless trial
Free account
Subscription based

User reviews

4.7

204

141

Value for money

Ease of use

Features

Customer support

90%

would recommend this app

4.7

11.6K

8.2K

2.9K

338

Value for money

Ease of use

Features

Customer support

89%

would recommend this app

Pros

“The option to come back and add more answers to a multiple-choice question while still working on the form (this is not a change to an answer but merely an addition of data). If I complete a form and later modify the contents of more than one question, the messages should be specific to each change rather than general for the entire page, since the reasons for each change might be different.”

David P.

Research technician

“I’ve been working with several EDC instruments and in Castor I’ve found an all in one tool with randomization, monitoring, high security level data storing, and a great flexibility to customize the eCRF.”

Javier M.

“In particular the survey was well designed to perform real-time quality assessment to promote completion of each section and provide feedback if answers were unclear. If there are any problems, human staff were readily available to resolve them.”

WILLIAM M.

Practicing physician. Director of clinical cancer research

Pros

I also really like the built in “conditional logic” , like the page branching based on what someone answers, and that makes it easier to design custom user routes, or whatever you wanna call it. Plus because it’s all cloud based, team editing feels smooth, and when you capture real time responses the automated summary charts are really handy.

Enguerran M.

Fullstack Web Developer

“I have used it for several situations at work, and I have bee able to create forms quickly that has allowed me to organize information quickly and efficiently.”

samantha h.

Administrative Assistant

“Perhaps most importantly, it offers a robust suite of features, like unlimited responses and collaborative editing, entirely for free, providing professional grade utility without the restrictive paywalls found in competing platforms”

Coral S.

L and D Advisor

Cons

“Also, I use an Ipad to log in to castor most of the times and I am not sure that when I need to input numbers on multiple fields the keyboard doesn't stay in numbers and I have to constantly swap from letters to numbers.”

Evita P.

Senior Research Nurse

“Sometimes the automatic track changes is a bit too sensitive: when I'm filling in the questionnaire and make 1 mistake, I have to change everything and explain it for every changed field.”

Lauren R.

Physician PhD-student

“The font size is too small.”

Mona I.

Research Analyst

Cons

“Lack of white labeling and branding, and missing some advanced features like complex skip logic, and specified field types such as e-signature”

Jerry L.

Lead Project Manager

“It also lacks **sophisticated logic features**, such as the ability to perform complex mathematical calculations within the form or provide detailed "save and continue" functionality for longer entries.”

Swarnika A.

Research Scholar

“The options of complex employee scheduling and the possibility of managing several class schedules are practically absent, and specialized customer care for our small education facility is unavailable.”

Blerta K.

Language Instructor