Install on ShopifyComparison
Stylab vs FASHN AI
FASHN AI is a developer try-on API. Stylab is a managed Shopify app — compare build time, billing, and who maintains the storefront widget.
FASHN AI gives developers an inference endpoint. Stylab gives merchants a finished Shopify experience: widget, upload UX, admin, billing, and analytics. Neither replaces the other — they serve different org charts.
If you are a Shopify merchant without in-house ML engineers, total cost of an API includes frontend build, mobile QA, monitoring, and quota logic. A managed app bundles those by default.
Side by side
Feature comparison
FASHN AI offers a virtual try-on API for teams building custom fashion tech products and integrations.
| Feature | Stylab | FASHN AI |
|---|---|---|
| Ready-made Shopify PDP widget | Included | Build yourself |
| Shopify billing / merchant plans | Yes | API credits + your infra |
| Built-in A/B testing | Included | Custom instrumentation |
| Time to first live try-on | Hours | Weeks+ typical |
| Add-to-cart analytics | Dashboard included | Build yourself |
| Maintained by | Stylab vendor | Your engineering team |
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When Stylab is a better fit
Choose Stylab if you sell on Shopify and need try-on live on product pages without staffing a dev project.
When FASHN AI may fit
Choose FASHN AI if you build proprietary apps, marketplaces, or non-Shopify stacks and already operate ML/API infrastructure.
Comparison based on publicly available product information as of May 2026. Features, pricing, and policies may change. Verify details on each vendor's website before making a decision.
Practical guide
How to evaluate both options
This comparison is for teams deciding between a finished Shopify app and a developer API. The right choice depends on who owns the build, the timeline, and what you need to measure on the storefront.
Build vs buy checklist
- Who maintains the widget? — Stylab ships the PDP button, upload flow, and admin. An API path means your team builds and maintains all of it.
- Time to first live try-on — merchants typically want days on Shopify; API projects are often weeks plus QA on mobile themes.
- Billing clarity — Stylab plans are try-on quotas through Shopify billing. APIs bill per call, GPU minute, or credit — plus your dev cost.
- Analytics & A/B — Stylab includes cart tracking and try-on vs control buckets. With an API, you instrument events yourself.
- Total cost at your volume — estimate monthly try-ons in our calculator, then add engineering and infra for the API route.
When an API makes sense: Custom mobile apps, non-Shopify stacks, in-store kiosks, or a product team that already runs ML pipelines. For standard Shopify apparel PDPs, a managed app is usually faster to validate.
Common mistakes
Avoid when comparing
- Quoting API per-call cost without adding frontend + maintenance labor
- Building custom when a 5-SKU Shopify pilot would validate demand first
Add AI try-on to your Shopify product pages
Start with a few products, measure shopper engagement, and see whether try-on helps customers buy with more confidence.