Common Ninja

What it is

Common Ninja is a no-code widget builder for websites. Its home page calls it "The No-Code Widget Builder for Any Website" and describes 200+ no-code widgets, including reviews, social feeds, audio players, booking widgets, chatbots, forms, countdown timers and popups, meant to capture leads, boost conversions and build trust. It is not a tool for building a whole app. You build one small interactive piece, such as a quiz, a calculator or a form, and embed it in a page you already have.

The reader it fits is someone who already owns a site: a founder with a landing page, a freelancer or agency building client sites on a website builder, or a marketing team that wants a lead-gen quiz or a price estimator without asking a developer. The home page says it is loved by 500K+ businesses, and it shows a rating of 4.9 on Google and 4.3 on Trustpilot.

What you build and how

The workflow is the same for every widget, and the home page lays it out in three steps. First you pick a widget, either from the catalog or by creating one from scratch. Then you customize it in the editor, which the page describes as a "Couple Clicks" editor optimized to build on any device. Then you design it, with customization tools to match your brand style. Finally you copy the embed snippet and paste it into your site, and the page says "It's live on your site." The quiz page promises setup in under 5 minutes with no credit card, and the calculator page says each platform guide takes under 4 minutes.

The catalog is sorted into groups the home page names as Reviews, Social Feeds, Forms, Popups & Buttons, E-Commerce and Media. The popular widgets on the home page include a WhatsApp button, Google Reviews, an Instagram feed, an AI chatbot, a form builder, a countdown timer, a popup builder, appointment booking, pricing tables, an FAQ, a YouTube feed, a testimonials slider, an audio player, an image carousel and an events calendar. The link at the bottom reads "Browse All 220+ Widgets".

The quiz maker is the widget that places Common Ninja in the forms space, and its page is the clearest picture of what a lead-gen build looks like. The page invites you to "launch your quiz or lead-gen funnel" from the editor. Its FAQ says you can put an email and details form inside a quiz to collect information from participants and turn engagement into leads. It supports personality test scoring, lets you set different feedback messages depending on how a participant performs, and can allow participants to share their results on social media. Image questions are supported too: the page says they render full-bleed on mobile so the visual is the main input. Responses and analytics sit in the quiz dashboard, so you can see how participants engaged.

The calculator widget covers the other classic lead tool. The page says you can build any math-driven decision tool, with cost estimators, savings calculators, ROI calculators, fitness calculators such as BMI, TDEE and macros, and pricing calculators among the examples. In the editor you define the fields, write the formula and format the result. Fields can be sliders and dropdowns with minimum and maximum values, steps and formats. You can show or hide fields based on the values of other fields, add a call-to-action button, and choose from multiple layouts. Number inputs bring up the mobile numeric keyboard, and field layouts reflow to a single column on narrow screens.

Design control is a shared theme. Both widget pages mention skins to get started quickly, custom CSS for deeper customization, and the ability to adjust visual elements to match your brand identity. The home page also lists Design and a No-Code Editor among its platform features.

Embedding is where the product earns its keep, because the finished widget lives on whatever builder you use. The calculator page walks through it: in Webflow you drag an Embed element onto the page and paste the snippet; in Tilda you use a T123 HTML block; in Hostinger you choose Add Element and then Embed Code. The quiz page adds Canva, where you search for the Embed app and paste the link, Elementor, where you drop an HTML widget on the layout, and Notion, where you paste the link and choose Create Embed. The page also lists Framer for the calculator guide. The home page names Shopify, WordPress, Squarespace, Wix, Webflow, Elementor, BigCommerce and Notion as supported platforms. A useful detail for anyone maintaining a site: edits made in the editor push to every embed without pasting the code again; the Webflow steps say edits push to every embed without republishing.

Beyond widgets, the home page lists platform features: an MCP Server, Native Payments, Analytics, an API, CRM Integrations, Localization and Project Management. It says widgets can connect to each other to form a network of analytics collection, and that you can integrate them with popular platforms to get dynamic data, automation and notifications about conversions. It also lists a Developers section, an Affiliate Program, a Status Page, a Help Center and a Community Forum, and a set of side tools including a Bracket Maker, a Sports Prediction Game, an AI Widget and Landing Page Builder, a Website Analyzer and custom domains for SaaS.

The evidence from the pages

The widget pages state no prices, so what follows is what they do say. The calculator FAQ answers "Is the Calculator widget free?" with yes: the free plan covers one calculator with no time limit and no credit card. It lists what you upgrade for: additional calculators, more fields per calculator, advanced conditional logic, premium skins, integration with CRM and email tools, and features such as saved-result emails and per-calculator analytics. The widget pages name no paid plans and no dollar prices, so check the pricing page before budgeting.

The size claims are the company's own. It says 1M+ widgets have been created with Common Ninja, 50M+ users interact with its widgets every month, and 500K+ businesses use them on their websites and online stores. The footer shows a copyright running from 2012. The widget pages carry verified reviews: one calls the widgets "no-code" and easy to customize, another says the author uses them in a web design business and gets quick help, and a third thanks a named staff member after building a survey. A fourth says the co-founder and CEO, Daniel, provided the customer service.

Who it suits and who it does not

Common Ninja suits a designer or agency that builds sites on Webflow, Wix, Squarespace or WordPress and needs a quiz, calculator, review wall or popup that the builder does not ship. It suits a small shop that wants a review slider or an appointment booking widget on its page, and a marketer building a quiz funnel in an afternoon. The embed model means the same widget works across builders, which matters if you manage several client sites.

The tradeoff is scope. These are widgets, not applications, so there is no database of your own, no user accounts and no multi-step process engine described. The free plan is limited to one calculator, so a site that needs several will need a paid plan. The editor is hosted, and the pages describe embedding a snippet rather than exporting code or self-hosting, so you depend on Common Ninja for as long as the widget is live.