Pinned · Case studies
Case study · August 11, 2026 · 8 min read
An agency spent $48,000 a month for eight months with zero attributed subscribers. What changed in 90 days when FX Replay took paid media in-house.
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Case study · August 7, 2026 · 5 min read
DoorDash's flagship segment paid nearly 3x per lead. A starved segment bought them for a fraction. A case study in reading a paid account by its segments.
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Case study · August 4, 2026 · 7 min read
A California health fund needed statewide English and Spanish signups. Cost per registration fell from $35 to $2.40 in six months. The full playbook.
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Case study · July 31, 2026 · 7 min read
See how a mens personal-care brand put its whole year on Q4 and took 46% of annual online revenue in it. Read the holiday playbook.
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Case study · July 28, 2026 · 6 min read
One Rocket Mortgage upsell tile, tested three times: copy first, then a trust badge. Clicks tripled, adding an estimated 150 loans a month. Full breakdown.
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Case study · July 7, 2026 · 6 min read
How a fractional CMO engagement grew FX Replay ARR 2.6x in 18 months: fixing broken attribution, finding the pricing lever, building the team.
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Case study · July 7, 2026 · 6 min read
YouMail's app-store funnel had stalled. Moving signups to the web raised conversion from 9% to 22% and cut customer acquisition cost 77%.
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Case study · July 7, 2026 · 4 min read
See how reordering the questions in Rocket Mortgage Launchpad drove an estimated $2B in incremental loan volume. Read the test breakdown.
Read the case study →Funnel optimization case studies from real growth engagements: paid media, conversion optimization, lifecycle, tracking, and the numbers behind each. New case studies are added regularly.
Yes. Every case study is built from engagement data: ad platform spend, revenue reporting, and experiment results. Where figures are rounded or anonymized to protect a client, the article says so.
Yes. Karran takes a small number of fractional CMO, growth audit, and advisory engagements at a time. Book an intro call at karrangupta.com/book.
I write about what actually moved the numbers. If any of it maps to what you're facing, let's talk.
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