Countdown timer in collection banner: +1.3% revenue
Test run byDave DiederenSyntra Labs
Commentary byLiftArchiveOur analysis, not theirsAdding a countdown timer to the collection page banner raised revenue by 1.3%, which Dave Diederen says came to nearly $10K a month for a mid-size brand. They report $161K in extra revenue over six months of running the change.
- Revenue: +1.3%, which the post puts at nearly $10K a month.
- Total: $161K in extra revenue, reported after six months of running.
- Conversion rate, revenue per visitor, AOV and sample size were not shared.
The change
Variant adds a sale countdown inside the collection banner
Simplified mockup drawn by LiftArchive from the shared screenshots.
Control
Collection pages showed a sale banner with the offer, such as a Buy One, Get One Free promotion, and no timer.
Variant
The same banner gained a countdown timer strip naming the sale and showing the time left. It appeared on every collection page and wasn't a popup.
Why it likely won
Our reading of the result, not the practitioner's claim.
- the timer added urgency to an offer shoppers were already seeing, so it boosted something that worked rather than adding a new message.
- it sat inside the banner, so it didn't interrupt browsing the way a popup can.
- showing it on every collection page meant every browsing shopper saw the deadline.
Caveats: No dashboard or statistics were shared, and the post doesn't say whether the six months were a split test. It also doesn't explain how the $161K total relates to the roughly $10K monthly figure. The screenshot is a mockup of the banner, not the live page.
Who ran it
Dave Diederen (@DaveDiederen) shared this test on X. The numbers and screenshots are theirs.
View the original post on X
How to run this test on your store
- Hypothesis
- If we add a countdown timer to the collection page sale banner, then more shoppers will buy during the promotion, because a visible deadline makes the offer feel time-limited.
- Primary metric
- Revenue per visitor
- Guardrails
- Average order value
- Discount cost per order
- Conversion rate after the sale ends
- Who should test it
- Stores running real, time-limited promotions with a lot of collection page traffic. Skip it if your sale has no real end date, because a fake deadline can damage trust.
Questions
Do countdown timers increase sales?
In this case, a timer on the collection banner raised revenue by 1.3%. The gain was small in percentage terms but meaningful at volume.
Where should I put a countdown timer?
Dave Diederen placed it inside the collection page banner, next to the existing offer, rather than in a popup.
Are countdown timers bad for trust?
They can be if the deadline is fake. Here the timer was tied to a real sale period.
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