Formstack vs Formidable Pro

Here is a comparison between Online Form Builders products Formidable Pro & Formstack.
The comparison details include features, reviews, ratings and pricing.



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Formidable Pro


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123 Contact Form


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Price US$39/mo US$0.00/mo US$0.00/mo
Editor's Rating





Offers the complete tool to build a good online form that helps to improve your conversion rate. With comprehensive A/B split testing, you can increase the effectiveness of your form over time.

Offers a basic plan that allows you to create a free basic form, with unlimited updates and email notifications. It provides one-time pricing plan, which allows you to use the software without any time limit.

Allows you to create any type of form that you can use anywhere online in a few simple steps. It provides a drag-and-drop form creation tool, along with complete analytics to monitor the performance of your forms.


The Silver and Gold plans only offers limited features, with limited forms and form submissions. The full features are only available on the most expensive plan, with quite an expensive monthly price.

Only available for WordPress, and it cannot be installed on websites that use any other blogging or content management platforms. The support you get is free only for 1 year, and you have to pay the yearly support fee later.

Can not create unlimited forms with this software unless you subscribe to the most expensive monthly plan.


Formstack allows you to create smart web forms that help to improve your conversion rate.

Formidable Pro is an easy-to-use plug-and-play WordPress plugin that allows you to build custom forms for your WordPress site, with various add-ons available to enhance your forms.

123ContactForm is an online form builder software that allows you to create HTML forms easily, with built-in security, automation, and payment integration features.

Form Builder Features
Drag n Drop
Form Security
A/B Testing
Payment Integration 9 2 10+
3rd Party Apps 24 30+
Branch Forms
Form Rules
File Upload
Branding NA
Sub-domain NA
Field Validation
Deployment Cloud Self-Hosted Cloud
Support Options 2 2 4
Free Trial 14 Days
Quick Overview
Market Strength 69 57 63
Feature Strength 75 71 88
Useful links
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