Make the mobile sticky bar a proof strip, not just a button
The sticky bar carries a thumbnail, the star rating, the review count as a link, a quantity select and the CTA, so the proof travels with the button.
What it is
Once the shopper scrolls past the buy box, a bar fixed to the bottom of the screen shows a product thumbnail and name, a 4.9 star rating with the review count as a link, a select combining quantity and price with the regular price, and a "Try Now" button.
Why it works
Most sticky bars carry only a button, so the shopper has to remember the price and the proof from the top of the page. Bringing the rating and the plan selector into the bar means the decision can be made at any scroll depth, which matters on a long page where people convince themselves halfway down.
How to test it
- Hypothesis
- Adding the rating, review count and plan selector to the mobile sticky bar will lift mobile add-to-cart rate versus a button-only sticky bar.
- Primary metric
- Add-to-cart rate (mobile product page sessions)
- Guardrail metric
- Sticky bar click-through to the wrong variant, to catch selection errors
Related ideas
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