Top reviews and sticky filters on mobile listings: +45.38% add to cart
Commentary byLiftArchiveOur analysis, not theirsAdding customer reviews at the top of the mobile listing page and making filter and sort options sticky lifted add-to-cart conversions by 45.38% for Andaaz Fashion.
ConvertPolo ran this test for the ethnic fashion brand, and it was published as a VWO case study.
Two changes shipped together, so the lift cannot be credited to either one alone.
- Add-to-cart conversions: +45.38% for the variant.
- No sample size, duration or significance level was shared.
The change
Variant adds reviews at the top and pins filter and sort while scrolling.
Simplified mockup drawn by LiftArchive from the shared screenshots.
Control
The mobile listing page had a basic heading, simple filters such as ready to wear and plus size, and then the product grid.
Variant
Customer reviews appeared at the top of the page, and sticky filter and sort options for color, price and more stayed in view while shoppers scrolled.
Why it likely won
Our reading of the result, not the practitioner's claim.
- Reviews at the top build trust before shoppers start scanning products.
- Sticky filters stay within reach while scrolling, so shoppers can narrow a long grid without going back up.
- More filter options, like color and price, help people find a match faster on a small screen.
Caveats: This was a bundled test: reviews and sticky filters shipped together, so we cannot say which drove the lift. No sample size, duration or significance was shared.
Who ran it
ConvertPolo ran this test for Andaaz Fashion and published the results (VWO case study). The numbers are theirs; the summary and commentary on this page are ours.
Read the original case study on ConvertPolo →
How to run this test on your store
- Hypothesis
- If we show customer reviews at the top of mobile listing pages and keep filter and sort options pinned while scrolling, then more shoppers will add items to cart, because they trust the store sooner and find the right products faster.
- Primary metric
- Add-to-cart rate from listing pages
- Guardrails
- Product page click-through rate
- Order conversion rate
- Filter use rate
- Who should test it
- Stores with long mobile listing pages and many attributes such as color, size or price. Test reviews and sticky filters separately if you need to know which one works. Small catalogs with a few products per page will gain less.
Questions
Do sticky filters help on mobile?
They often do on long listing pages, because shoppers can refine results without scrolling back up.
Keep the bar slim so it does not cover too much of the grid.
Should reviews appear on collection pages?
Store-wide reviews or star ratings on listings can build trust early.
Keep them short so products still show near the top of the screen.
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