K: Contact Form Builder vs Rocket Form Builder
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 7, 2026 for K: Contact Form Builder, Jul 3, 2026 for Rocket Form Builder.
The short answer
- K: Contact Form Builder lists 8 features Rocket Form Builder’s listing doesn’t mention, including Analytics, Conditional logic, Contacts.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureEffortlessly connect with your customers to generate more leads and product sales with Contact Form Builder. Easy to build Popup Contact Form, Page Embedded Forms, Signup Form, Multi Step Forms & Floating Bubble Forms. Select the fields, add contact form file upload, ensuring you gather all the information in register form or data collection form.
Form Builder allows merchants to create and manage custom forms for their store without complexity. Collect customer information such as contact details, feedback, and inquiries using flexible form fields and layouts. Configure form placement, manage submissions from the dashboard, and review collected data easily.
- Effortlessly create forms and collect data from your customers.
- Customize the app to suit your website style.
- Trigger your form anywhere.
- Lots of form templates to save your time.
- Customizable forms that align with your store’s design and appearance
- Works across your store – Add forms easily using App Blocks
- Flexible styling options – Adjust colors, fonts, and layout to match your brand
- Quickly create feedback forms, popup forms
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  K: Contact Form Builder |  Rocket Form Builder |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | K: Contact Form Builder | Rocket Form Builder |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 86 | Not published |
| New reviews, 28 days | 9 | Not enough data |
| Reviewers a year or more in | 0% | Not enough data |
Pricing
| Measure | K: Contact Form Builder | Rocket Form Builder |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | No monthly plan listed | No monthly plan listed |
| Longest free trial | Not listed | Not listed |
| Plans listed | Not published | Not published |
Listing
| Measure | K: Contact Form Builder | Rocket Form Builder |
|---|---|---|
| Shopify category rank | #3(ahead) | #200 |
| Shopify App Charts | #2 on Review surge in Forms | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jul 10, 2024 | May 5, 2026 |
| Languages | 1 | 1 |
| Developer | Kaktus | Swishtag |
FAQ
K: Contact Form Builder and Rocket Form Builder: common questions
- What features does each app list that the other doesn’t?
- K: Contact Form Builder lists 8 the others don’t mention, such as Analytics, Conditional logic, Contacts, Custom CSS. Rocket Form Builder lists 3 the others don’t mention, such as Custom fields, Multi-step, Pop-ups. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Nov 7, 2026 for K: Contact Form Builder, Jul 3, 2026 for Rocket Form Builder; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Nov 7, 2026 for K: Contact Form Builder, Jul 3, 2026 for Rocket Form Builder. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.