SitePx SEO OS vs Webrex: #1 AI SEO Optimizer
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 14, 2026 for SitePx SEO OS, Nov 9, 2026 for Webrex.
The short answer
- Both list a free plan. Paid plans start at $29/month for SitePx SEO OS and $9.99/month for Webrex.
- SitePx SEO OS lists 29 features Webrex’s listing doesn’t mention, including AI generation, Alt text, Analytics.
Head to head
Remove Google Search Console Error, Breadcrumbs, Rich Snippets
- United States
- United Kingdom
- Australia
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · Blog AI generation (English)
- · Delayed job processing
- · Guided fix recommendations
- · Image alt text generation
- · Product AI generation (English)
- · SEO audits (up to 20 entities)
Pro
- · Multiple languages enabled
- · No job queue delays
- · SEO audits (up to 500 pages)
- · Schema deploy + validator
- · Search Console integration
- · Sitemap controls enabled
Growth
- · Full schema suite + validator
- · Larger bulk batches (up to 1,000)
- · No job queue delays
- · Premium image models (Growth)
- · SEO audits (up to 2,000 pages)
- · Scheduled automations
Enterprise
- · All premium image models
- · Full schema suite + validator
- · Priority job queue
- · Priority support
- · Scheduled automations
- · Search Console insights
FREE
- · AI meta tag & image alt text for product
- · Basic Core Web Vitals analysis
- · Breadcrumbs & broken link capture
- · Get started free with core SEO features
- · Google Search Console & sitemap
- · Image optimization & page speed
Starter
- · 30+ review app integrations
- · AI meta tags & bulk SEO for all pages
- · Advanced breadcrumb design
- · All Free features, plus:
- · Collection & blog image optimization
- · No index / No follow controls
Growth
- · 5-level & custom breadcrumbs
- · AI ecommerce blog generator
- · All STARTER features, plus:
- · Find duplicate meta tags
- · Google Index Status monitoring
- · Homepage image optimization
Pro
- · AI-powered product content tabs
- · All bulk SEO operations & Automation
- · FAQ, Recipe & Video schema
- · Homepage & theme Image Automation
- · Keyword analysis & suggestions
- · SEO Audit & Social Media Preview
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureSitePx SEO OS helps merchants improve organic visibility by auditing products, blogs, pages, and images, then prioritizing issues with clear fix actions. It can generate and optimize titles, descriptions, tags, and alt text in your chosen brand voice, and deploy structured data with validation checks. Background jobs run updates safely, with status tracking and change history for review and revert.
Built for Shopify stores serious about organic growth — not feature checklists. The complete SEO platform: AI meta tags, descriptions & alt text; JSON-LD schema (Product, FAQ, Video, Review, Recipe); 50+ technical SEO audit checks; 5-level breadcrumbs; Google Search Console integration; Core Web Vitals monitoring; 30+ review app integrations.
- SEO audits across products, blogs, pages, and images with clear priorities
- One-click fixes for titles, descriptions, tags, and image alt text
- Structured data (schema) deployment with built-in validation checks
- Performance and accessibility checks with actionable recommendations
- Meta tag & Alt text both with AI, Bulk and Automation, Improvement Suggestions.
- 13 Schema, Schema Error Report, Fix Error & Warring, 20+ Review app integration
- Auto Submit For Google Index, GSC Search Reports, Sitemap, Keyword Analysis
- Improve store speed with Bulk Product, Homepage, Theme and Other Image Optimizer
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 |  SitePx SEO OS |  Webrex |
|---|---|---|
| Detected stores | Not published | 205 |
| Net store change, 28 days | 0 | −97 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Apparel & Accessories, Home & Garden, Health & Beauty |
| Top store countries | Not published | United States, United Kingdom, Australia |
Reviews
| Measure | SitePx SEO OS | Webrex |
|---|---|---|
| App Store rating | Not published | 4.9 ★ |
| App Store reviews | Not published | 596 |
| New reviews, 28 days | Not enough data | 12 |
| Reviewers a year or more in | Not enough data | 10% |
Pricing
| Measure | SitePx SEO OS | Webrex |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $29/month | $9.99/month(ahead) |
| Longest free trial | Not listed | 7 days |
| Plans listed | 4 | 4 |
Listing
| Measure | SitePx SEO OS | Webrex |
|---|---|---|
| Shopify category rank | #797 | #44(ahead) |
| Shopify App Charts | Not on this week’s charts | #24 in SEO |
| Built for Shopify | No | Yes |
| Launched | Jun 17, 2026 | Apr 20, 2020 |
| Languages | 10 | 15 |
| Developer | themefox.com | Webrex |
FAQ
SitePx SEO OS and Webrex: common questions
- Is SitePx SEO OS or Webrex cheaper?
- Both list a free plan. Paid plans start at $29/month for SitePx SEO OS and $9.99/month for Webrex. 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?
- SitePx SEO OS lists 29 the others don’t mention, such as AI generation, Alt text, Analytics, APIs and webhooks. Webrex lists 15 the others don’t mention, such as 404 pages, AI assistance, Bulk edit, Collections. 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 14, 2026 for SitePx SEO OS, Nov 9, 2026 for Webrex; 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 14, 2026 for SitePx SEO OS, Nov 9, 2026 for Webrex. 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.