Your own custom checkout.See how it works
Playbook

Build a checkout that converts.

The Shopify checkout builder: drag testimonials, timers and order bumps onto a live preview, no code.

Six presets to start 17 drag-in blocks A/B testing built in Build and test it first
app.sling.cx
The Sling checkout editor with drag-in blocks arranged on a live checkout preview
The Checkout section. Drag blocks onto a live preview, style every detail, publish in one click.

Sample data

Start with a shape

Six presets, then make it yours.

Pick a shell, from classic split to bold one-page DTC, style every colour and block, then A/B test the winner.

Layout presets6 to start

Classic split

Single column

Standard

Bold DTC

Minimal

Editorial DTC

then A/B test

6

layout presets

17

drag-in blocks

A/B

test and promote

Every block that lifts conversion, one drag away.

Drag blocks onto a live preview

Drag testimonials, countdown timers, trust badges, FAQ and order bumps onto a live preview, then publish.

  • Reorder by drag
  • Style to your brand
  • One-click publish
Header + logo
Reviews · 4.9
Order bump
Payment

Lift average order value at the last step

Add order bumps and Subscribe & Save right where shoppers decide, plus a one-click upsell on the thank-you page.

  • Order bumps at checkout
  • Subscribe & Save
  • Post-purchase upsells
Subscribe & Save
One-time$42.00
Every month Save 15%$35.70
Renews automatically $35.70 / month

Sample data

WELCOME15 Applied
Subtotal$89.97
Discount (15%)-$13.50
Free shipping$0.00
Total$76.47

Sample data

Discounts and shipping, handled

Codes, free-shipping offers, minimum-order thresholds and per-country rates all apply server-side, so totals are always right.

  • Code and free-shipping types
  • Minimum-order threshold
  • Per-country shipping rates

Three steps to a checkout you own.

01

Drop in your blocks

Pick a layout, drag in the blocks that fit your brand, and style it to match your store.

02

Preview on real devices

See exactly what shoppers see on desktop and mobile before anything goes live.

03

Go live on your domain

Start your plan, set up your connected Whop account and your domain, then we review the store before it goes live.

app.sling.cx
The Sling A/B testing dashboard comparing two checkout layouts
Run two layouts head to head against real traffic, then promote the winner.

Sample data

Built in, not bolted on.

Testimonials

Social proof right at the decision point, styled to your brand.

Countdown timers

Urgency that converts, without a sketchy third-party plugin.

Trust badges

Encryption and guarantee badges that reassure first-time buyers.

Order bumps

One-tap add-ons that lift average order value at checkout.

Thank-you page

A post-purchase page builder with a one-click upsell after payment.

Skip-cart intercept

Send buy-now clicks straight to your checkout when you want to.

Every block is yours to try before you go live.

Build the whole thing and preview it on your storefront in test mode. Live payments start once the plan does.

“My theme, products and cart carried on as normal, and the checkout finally converts.”

Illustrative example, apparel DTC

Questions.

Shopify's terms say merchants agree to use Shopify Checkout for any sales associated with their online store and not to work around its limits to process orders outside it. An external checkout like Sling may conflict with those terms, and that risk sits with you as the merchant. Read Shopify's terms before you go live.

Usually not. Connecting Shopify lets us install the checkout loader for you, and you confirm it before real payments. If the install does not land, one line pasted into theme.liquid does the same job.

Yes. Colors, logo, radius and layout are all yours, and you preview on real devices before publishing.

Testimonials, countdown timers, trust badges, FAQ, order bumps, Subscribe & Save, discounts and a post-purchase upsell, all drag-and-drop, no code.

Build your checkout first. Start the plan to go live.