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Signals

Metric shifts Tamda detected in the last 7 days

Suggested next experiments

Metric not tested

Sticky mobile checkout bar with a collapsed promo field

purchase_completed dropped 13.6% last week and has never been the target of an experiment in this workspace.

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Repeated pattern

Mobile web keeps showing up across your signals

mobile_web is the top driver in 3 of the last 5 signals, across purchase_completed and add_to_cart. That is a systemic mobile issue, not a one-off.

Start

purchase_completed

-13.6% vs prior 7d3.61%3.12%
high

The drop is almost entirely mobile web. On small screens the promo-code field sits directly above the Pay button and pushes it below the fold, so shoppers who reach payment on a phone lose sight of the primary action and abandon. iOS app and desktop, where the layout differs, held flat.

Driven by mobile_web (platform), 82% of the change

Sticky mobile checkout bar with a collapsed promo field

On mobile checkout, move the promo-code field behind a “Have a code?” link and keep the order total and Pay button visible while the customer scrolls. Measure completed purchases, and make sure checkout starts, cart additions, and average order value do not get worse.

add_to_cart

-4.2% vs prior 7d9.29%8.90%
medium

The decline is concentrated in paid-social traffic, which currently lands on the homepage rather than the specific product from the ad. The extra hop to find the advertised item adds friction before anyone can add to cart. Organic and email traffic, which lands deeper, were flat.

Driven by paid_social (utm_source), 79% of the change

Route paid-social clicks to the advertised product page

Send each paid-social ad to the product it features instead of the homepage, while preserving campaign tracking. Measure cart additions, and make sure exits and completed purchases do not get worse.

signup_completed

+6.7% vs prior 7d5.80%6.19%
low

A modest, encouraging lift, concentrated in first-time visitors from organic search. It lines up with last week’s change that moved the account prompt below the first purchase step, so new shoppers see value before being asked to sign up. Worth confirming it holds, then codifying.

Driven by first_time (visitor_type), 88% of the change

Confirm the deferred sign-up prompt holds, then make it default

Keep the account prompt after the first purchase instead of showing it before checkout. Measure completed sign-ups, and make sure completed purchases do not get worse.