The Geometry of Growth: Calculating the Synergy of CTV+Mobile
What happens to reach and outcomes when connected TV and mobile work as one plan.
We've all done it: watched a TV ad, then reached for a phone to learn more or buy. For years the industry treated CTV and mobile as separate silos, one for awareness and one for performance. But modern viewers use these devices at the same time, and a strategy that ignores that connection leaves revenue on the floor.
The answer is household identity, not individual tracking. Using deterministic residential IP mapping, roughly 90% of a CTV audience can be identified and reached on mobile within 24 hours. Loyal's StreamConvert treats the TV and the smartphone as a single decision-making unit, capturing hashed residential IPs from CTV impressions to recognize other devices in the same home, while staying privacy-safe through deterministic rather than cookie-based methods.
The gains are substantial. Brands pairing big-screen exposure with immediate mobile reinforcement see a 3x to 11x conversion lift versus CTV-only, with ad completion rates of 90% to 98% on TV. That finally enables household-level attribution, revealing which TV spots actually drove mobile purchases. Modern growth means mastering the geometry of the home.