Fineswap

<a href="//wordpress.org/plugins/ninja-forms/" rel="nofollow ugc">Ninja Forms</a> is a great WordPress plugin and this plugin makes it even greater!
If you’re using Ninja Forms for gathering data and one or more of textbox fields 
must be unique, this plugin is for you. The plugin is pretty straightforward to 
install, and has few settings only (language settings, basically).
Once installed, it will validate every submission to make sure the values for 
one or more fields are unique.
Brought to you by <a href="http://fineswap.com/?utm_source=wordpress&utm_medium=plugin&utm_term=readme-desc&utm_campaign=ninja-forms-unique-textbox" title="A blog and a mobile app advocating sustainability and green living" rel="nofollow ugc">Fineswap</a> Team.

Ninja Forms Unique Textbox

Extend Ninja Forms' functionality by allowing textbox field to have unique values.

Common Ninja

<a href="https://pricingtables.commoninja.com/" rel="nofollow ugc">Pricer Ninja</a> is a super powerful tool for adding beautiful pricing tables to your website. Pricer Ninja’s pricing tables are responsive, meaning, the tables will be presented properly on all devices including smatphones, tablets, laptops, and desktop computers.
<a href="https://pricingtables.commoninja.com/gallery" rel="nofollow ugc">You may browse our public gallery to see some examples.</a>
IMPORTANT: In order to add a pricing table to your WordPress website, you will FIRST need to go to <a href="https://pricingtables.commoninja.com" rel="nofollow ugc">Pricer Ninja</a>, sign up for FREE, and create a new table in our pricing tables maker.
Got any feedback or question? Contact us via contact{at}commoninja.com.
** It’s really easy. Get started in 2 minutes tops, no training needed! **

Pricer Ninja: Create and add responsive Pricing Tables to your website on-the-fly

A great tool for adding responsive pricing tables to your Wordpress website. Powered by Common Ninja.

Ninja Forms Unique Textbox vs Pricer Ninja: Create and add responsive Pricing Tables to your website on-the-fly