# Top reviews and sticky filters on mobile listings: +45.38% add to cart

- Outcome: Won
- Page type: Collection page (Ecommerce)
- Elements: Reviews & star ratings, Filters, sorting & site search
- Test run by: [ConvertPolo](https://liftarchive.com/practitioners/convertpolo/)
- Commentary by: LiftArchive (our analysis, not theirs)
- Original source: https://wingify.com/success-stories/andaaz-fashion/
- Page: https://liftarchive.com/test/andaaz-fashion-mobile-plp-reviews-sticky-filters/

Adding 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.

## Result

**+45.38% add to cart**

- Add-to-cart conversions: +45.38% for the variant.
- No sample size, duration or significance level was shared.

## 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)

- 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.

## How to run this test

- 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
- Guardrail: Product page click-through rate
- Guardrail: Order conversion rate
- Guardrail: 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.

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Credit: ConvertPolo ran this test and owns the result. Summary and commentary by LiftArchive (https://liftarchive.com/test/andaaz-fashion-mobile-plp-reviews-sticky-filters/).
Usage: Free to use, quote and build on, with credit and a link: name the practitioner or organization that ran the test and link to its LiftArchive page. The results belong to the practitioners who ran and shared them; the summaries and commentary are LiftArchive's.