Four Shopify brands, and the numbers that changed.

Each brand fixed the tracking and identity data its ad platforms and Klaviyo flows depend on. Every number below links to the story behind it.

The stories

Find the problem that sounds like yours. Each card pairs where a brand started with the number that moved.

Perfect White Tee

Women's fashion

33%

CAC reduction, within the first week

Meta performance became volatile. CAC climbed from $60 to $90.

An 8-figure women's fashion brand recovered $92K/month in abandonment flow revenue and achieved 90x ROI — in 30 days, without touching creative.
Read the story about Perfect White Tee
Montreal Weights

Fitness / Home Gym Equipment

15%

ROAS improvement, in 90 days

Meta was receiving incomplete signals, limiting optimization.

A DTC fitness equipment brand recovered $55K in abandonment revenue, improved ROAS 15%, and reduced New Customer CAC 10% — by fixing the identity gaps their platforms depended on.
Read the story about Montreal Weights
Champo

Haircare / Beauty

+128%

Customers identified, in 30 days

Abandonment flows were missing 40–50% of profile volume due to lost cookies.

A 7-figure British haircare brand rebuilt their data infrastructure and recovered $24K/month in abandonment revenue, identified 128% more customers, and increased flow revenue 54%.
Read the story about Champo
Paire

Sustainable fashion / Apparel

+24%

Improvement in MER, in 60 days

Spend was increasing, but efficiency was dropping.

An 8-figure sustainable fashion brand reduced CAC 20%, improved MER 24%, and achieved 25x ROI — by fixing the data their ad platforms depended on.
Read the story about Paire

In their words. From each case study, plus one post on X.

“We went from struggling with Meta performance and missing Klaviyo revenue to having our best month ever — in less than 30 days. Upstack didn't just fix our tracking. It transformed our entire growth engine.”

Johnny Hickey CMO, Perfect White Tee

Posted on X

Johnny Hickey @johnhickey1970

i use upstack. wouldn't do without it and I tested much of the competition

Jun 25, 2026

“Upstack helped us unlock revenue we didn't even realize we were missing. Our emails started landing, our Meta campaigns started scaling again — and we didn't have to change anything else.”

Montreal Weights Team
“For months, we were running campaigns without really knowing what was working. Upstack gave us visibility we'd never had — and recovered revenue we didn't even know we were missing.”

Team at Champo · Champo Haircare
“Our problem was a very classic Triple Whale solving problem — we didn't know which creative or campaign was actually bringing the return in revenue. Facebook has a tendency to bloat the ROAS. We just wanted to get the real ROAS.”

Nathan Yun · Founder, Paire