Form Booster vs K: Contact Form Builder
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for Form Booster, Nov 7, 2026 for K: Contact Form Builder.
The short answer
- Only Form Booster lists a free plan.
- Form Booster lists 3 features K: Contact Form Builder’s listing doesn’t mention, including Data export, File upload, Pop-ups.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · 1 admin notification
- · 100 leads/month
- · Form analytics
- · Up to 2 forms
Pro
- · 1,000 leads/month
- · 7-day free trial
- · File uploads, Hidden field
- · Priority support
- · Unlimited admin/customer notifications
- · Up to 10 forms
Advanced
- · 7-day free trial
- · Advanced triggers
- · CSV export
- · Custom CSS injection
- · Dedicated support
- · Everything in Pro
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureWith an intuitive drag‑and‑drop builder, merchants can launch everything from simple email capture forms to advanced multi‑field lead funnels in minutes—no coding required. Control when and where forms appear using powerful targeting rules (page, device, scroll, time delay, exit‑intent, and more), and track performance with built‑in form analytics for impressions, submissions, and conversion rate.
Effortlessly 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.
- Drag‑and‑drop builder for custom forms and pop‑ups
- Multiple field types: email, phone, text, dropdown, checkbox, radio, file, date
- Flexible display: inline, popup bar layouts
- Built‑in validation for required, email, phone
- 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.
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 |  Form Booster |  K: Contact 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 | Form Booster | K: Contact Form Builder |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 86 |
| New reviews, 28 days | Not enough data | 9 |
| Reviewers a year or more in | Not enough data | 0% |
Pricing
| Measure | Form Booster | K: Contact Form Builder |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | $4.99/month | No monthly plan listed |
| Longest free trial | 7 days | Not listed |
| Plans listed | 3 | Not published |
Listing
| Measure | Form Booster | K: Contact Form Builder |
|---|---|---|
| Shopify category rank | #124 | #3(ahead) |
| Shopify App Charts | Not on this week’s charts | #2 on Review surge in Forms |
| Built for Shopify | No | No |
| Launched | May 1, 2026 | Jul 10, 2024 |
| Languages | 1 | 1 |
| Developer | OG Web Solutions | Kaktus |
FAQ
Form Booster and K: Contact Form Builder: common questions
- Is Form Booster or K: Contact Form Builder cheaper?
- Only Form Booster lists a free plan. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- Form Booster lists 3 the others don’t mention, such as Data export, File upload, Pop-ups. K: Contact Form Builder lists 3 the others don’t mention, such as Analytics, Dynamic logic, Email templates. 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 Oct 13, 2026 for Form Booster, Nov 7, 2026 for K: Contact 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 Oct 13, 2026 for Form Booster, Nov 7, 2026 for K: Contact 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.