battles / Marketing
CartKit vs Selleasy
CartKit ($79/mo/mo, vibe code 8/10) vs Selleasy ($15/mo/mo, vibe code 8/10). CartKit is the easier one to rebuild yourself — here is what you lose either way.
Marketing
$79/mo/mo
- MVP
- 1 weekend
- Full replacement
- 3-6 weeks, primarily due to SMS 10DLC deliverability setup and multi-channel opt-out synchronization
easier to rebuild
get the build prompt →Marketing
$15/mo/mo
- MVP
- 1 week
- Full replacement
- 1-2 months, primary effort spent on multi-theme compatibility and post-purchase checkout API compliance
price gap / year
$768/mo
running both / year
$1,128/mo
our call
Start with CartKit — highest vibe code, weakest moat.
CartKit
CartKit is essentially a queueing system listening to storefront checkout webhooks and dispatching emails or SMS via third-party providers. You pay for bundled UI, pre-built copy templates, and handled delivery infrastructure. Building a custom worker with Redis/BullMQ and Twilio/Resend completely replaces its core functionality.
you can rebuild
- Abandoned cart checkout tracking via storefront webhooks
- Automated email recovery drips with customizable time delays
- SMS recovery dispatch with dynamic checkout discount links
- Web push notification subscriptions and trigger rules
- Recovered revenue attribution and basic analytics dashboard
what you lose
- Pre-packaged high-converting email and SMS copy templates
- Turnkey 10DLC brand and campaign registration management for SMS
- No-code visual sequence builder for complex conditional logic
- Built-in unsubscribe and opt-out link handling across channels
- Zero-maintenance email domain warm-up and deliverability management
real moats
- 10DLC SMS registration pipeline and carrier trust relationships
- Pre-warmed sending domain reputation for shared infrastructure
- Deep platform App Store ecosystem distribution
Selleasy
Selleasy consists of standard UI widgets for cross-selling items based on simple product rules or Shopify metafield pairings. The core functionality uses native Shopify Post-Purchase and Checkout UI APIs. Any competent developer can recreate these widgets directly within a store's theme or custom Shopify app.
you can rebuild
- Frequently Bought Together widget on product detail pages
- Post-purchase upsell step between checkout and thank-you page
- Add-on popups and slide-outs inside the Ajax cart drawer
- Rule-based recommendation mapping by product tags or collections
- Basic conversion rate and revenue analytics tracking
what you lose
- No-code admin UI for non-technical store managers to set up offers
- Out-of-the-box compatibility across dozens of third-party Shopify themes
- Pre-configured handling of multi-currency and multi-language edge cases
- Automatic maintenance when Shopify updates theme liquid schemas or checkout APIs
- Zero-effort deployment without maintaining dedicated app hosting infrastructure
real moats
- Battle-tested visual layout rendering across thousands of non-standard merchant themes
- Optimized asset bundle loading designed to preserve lighthouse page speed scores
- Handling Shopify Post-Purchase API token handoffs with minimal latency
Questions people ask
Which is easier to rebuild with AI, CartKit or Selleasy?
CartKit. It scores 8/10 on vibe code with a moat of 1/10, so an AI-assisted MVP takes about 1 weekend and a full replacement about 3-6 weeks, primarily due to SMS 10DLC deliverability setup and multi-channel opt-out synchronization.
Which one costs less, CartKit or Selleasy?
Selleasy at $15/mo/mo for a typical mid-market store. The gap between the two is about $768/mo a year.
What do I lose if I replace CartKit?
Pre-packaged high-converting email and SMS copy templates Turnkey 10DLC brand and campaign registration management for SMS No-code visual sequence builder for complex conditional logic
What do I lose if I replace Selleasy?
No-code admin UI for non-technical store managers to set up offers Out-of-the-box compatibility across dozens of third-party Shopify themes Pre-configured handling of multi-currency and multi-language edge cases
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