battles / Marketing
Fomo vs Selleasy
Fomo ($99/mo/mo, vibe code 8/10) vs Selleasy ($15/mo/mo, vibe code 8/10). Fomo is the easier one to rebuild yourself — here is what you lose either way.
Marketing
$99/mo/mo
- MVP
- 1 weekend
- Full replacement
- 1 month, for multi-store webhooks, rate limiting, and custom widget styling
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
$1,008/mo
running both / year
$1,368/mo
our call
Start with Fomo — highest vibe code, weakest moat.
Fomo
Fomo listens to order webhooks and renders a simple JavaScript popup toast on your site. Building a custom endpoint to ingest Shopify order webhooks and serve a 50-line JS script takes days, not months. You are paying purely for turn-key UI templates and webhooks.
you can rebuild
- Recent order notification toast rendering
- Shopify order webhook receiver and event queuing
- Geo-location display based on order IP or city
- Customizable popup styling, position, and timing controls
- Impression logging and click-through analytics
what you lose
- Pre-built integrations with third-party platforms like Mailchimp or Trustpilot
- Out-of-the-box visual CSS customization UI
- Native A/B testing engine for popup variations
- Complex device-level and URL-matching targeting rules
- Managed global CDN handling high impression throughput
real moats
- Turnkey pre-built integrations library across 100+ SaaS platforms
- Zero-code installation for non-technical store owners
- Managed edge infrastructure optimized for millions of low-latency requests
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, Fomo or Selleasy?
Fomo. It scores 8/10 on vibe code with a moat of 0/10, so an AI-assisted MVP takes about 1 weekend and a full replacement about 1 month, for multi-store webhooks, rate limiting, and custom widget styling.
Which one costs less, Fomo or Selleasy?
Selleasy at $15/mo/mo for a typical mid-market store. The gap between the two is about $1,008/mo a year.
What do I lose if I replace Fomo?
Pre-built integrations with third-party platforms like Mailchimp or Trustpilot Out-of-the-box visual CSS customization UI Native A/B testing engine for popup variations
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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