Install on Shopify
PageFly is a free-form drag-and-drop builder for merchants who want detailed design control. Sternify gives you one-click niche product page templates plus built-in reviews, bundles, upsells, sections, and cart tools, so you can launch the conversion path without designing every piece yourself.
PageFly gives experienced builders detailed page design freedom. Sternify reduces the decisions required to launch a connected product page conversion path.
From $29.50/mo; reviews on Pro ($49.50/mo)
Merchants who want a curated product page structure and built-in conversion tools without designing every element.
Free plan; Builder from $24/mo, extra slots billed
Merchants who want free-form design control and are comfortable building and maintaining the wider conversion stack.
A flexible builder gives you control over layout, section order, responsive behavior, and page design.
You still need to decide where proof, offers, add-ons, and the path to checkout belong.
PageFly integrates with review and product-page offer apps, and its Accelerate plan also includes a cart drawer with bundles and upsells in beta.
Sternify starts with a curated product page structure and connects those jobs in one Shopify app.
Sternify AI analyzes the wider buying journey, identifies conversion opportunities, and prioritizes the actions you can take through Sternify modules.
Review trust, product clarity, offer strength, average order value, and cart readiness together.
See which issue deserves attention first and why it may affect conversion.
Move from a recommendation to Reviews, Sections, Bundles, Upsells, or Cart Drawer.
Review every recommendation and choose what to publish. Sternify AI does not change your store automatically.
Sternify brings the core pieces of a Shopify conversion stack into one place, so merchants can improve trust, AOV, sections, and cart experience.
PageFly gives you a flexible page-building canvas. Sternify gives you a curated starting point plus the proof, offer, average order value, and cart tools that surround the page.
Do you want to design custom layouts from a blank or flexible canvas?Do you need a complete niche product page structure in one click?Do you want reviews, bundles, upsells, and cart tools built into the same app?Do you need guidance on which conversion issue to address next?
| Category |  | |
|---|---|---|
| Primary focus | Product page conversion system | Free-form page building |
| Drag-and-drop page builder | No | Yes |
| Product-page templates | Yes, one-click niche templates | Product-page templates with builder customization |
| Responsive design controls | Curated layouts | Detailed controls |
| Conversion-focused sections | Yes | Yes, through elements and templates |
| Built-in product reviews | Yes, on Pro | Uses integrations |
| Bundle offers | Yes | Product-page integrations; cart bundles in beta |
| Upsell offers | Yes | Product-page integrations; cart upsells in beta |
| AI focus | Store conversion analysis and prioritized actions | Page creation and page-level analysis |
| Testing and heatmaps | Not listed as core features | Available on selected paid plans |
| Best fit | Faster connected conversion path | Detailed page design freedom |
if...Sternify is the stronger fit when you want to start with a curated niche product page and add proof, offers, average order value tools, and cart optimization in the same app.
if...PageFly may be the better fit when custom layout control is the main job and you are comfortable choosing and maintaining separate apps for the wider conversion stack.
Here’s a quick roundup of the most common things people ask before getting started.
We’re here to help you with your questions.