App success doesn’t end at the install. More than half of users churn within the first 30 days of downloading an app. Add rising acquisition costs, shorter attention spans, and intensifying competition, and the takeaway is clear: growth depends less on how many users you acquire and more on how well acquisition and re-engagement work as a system.
For years, lifecycle marketing was framed as a balancing act between acquisition and retention, two budgets pulling against each other. There’s a more useful way to see it today. Think of it as a pairing of two distinct products that do two distinct jobs: CTV for user acquisition, and paid retargeting for re-engagement. They aren’t variants of the same channel competing for the same outcome. They’re different products, aimed at different users at different moments, which is exactly why they complement each other rather than cannibalise each other.
The reason CTV and mobile retargeting fit together isn’t a measurement technicality. It’s that they are fundamentally different products, engineered for different parts of the lifecycle on two different channels.
The two run on different channels, read different signals, act at different moments, and answer to different KPIs. Because they operate on separate channels with different objectives, the structural risk of them competing for the same conversion is low by design.
One fills the pipe while the other keeps it from leaking. That is genuine product complementarity, not two channels fighting over the same last click the way mobile UA and mobile retargeting can.
Framed this way, the pairing is additive rather than substitutive: CTV expands the top of the loop, and retargeting compounds value further down it. Together they cover a stretch of the lifecycle that neither product reaches alone.
Connected TV has become a critical channel for scalable, incremental acquisition. It reaches users in high-attention, full-screen environments, shaping consideration before mobile action. In practice, a user sees a CTV ad while streaming and installs or opens the app later on their phone, sometimes minutes later and sometimes days later.
CTV for app growth is defined by:
Because CTV creates net-new demand rather than harvesting existing intent, it tends to bring in audiences that saturated, click-based mobile channels don’t reach. That is what makes it a natural partner to a re-engagement product rather than a competitor to it.
Retargeting works best when it is tied to specific lifecycle moments rather than run as generic win-back. Early in the lifecycle, it reinforces onboarding, drives feature discovery, and reduces early churn. Once a user is active, it promotes upgrades and premium features, deepens engagement, and supports cross-sell and upsell.
And when churn inevitably comes, re-engagement re-ignites interest: identifying and addressing drop-off reasons, surfacing new content or value, recovering abandoned baskets or lapsed subscriptions, and reintroducing the app with updated messaging. Each of these is a job the acquisition product simply isn’t built to do, which is precisely why the two belong together.
Because CTV and mobile retargeting are distinct products serving distinct functions, the pairing is complementary by construction: they extend each other’s reach instead of overlapping it. But complementarity is a claim worth proving, not assuming. Any two channels that touch the same user can overlap at the margin, so the discipline is to measure it.
That is what incrementality testing is for. When both products run together, we look for two things: first, that each one produces incremental conversions above its own matched control group, and second, that the combined program produces more incremental value than either product alone. That combined result is the evidence the two work together, measured rather than asserted.
For performance marketers, this means:
In app marketing, it’s easy to mistake attributed performance for incremental performance. A user who was already going to convert can still be counted as a win, even if paid media didn’t change their behaviour. Over time, that creates the illusion of growth while budget simply shifts between line items.
Incrementality answers the more honest question: did this activity create value that would not have existed otherwise? At its core, it measures causality, not correlation, by comparing users exposed to a campaign against a statistically similar control group who were not. Applied across both CTV acquisition and mobile retargeting, it’s also how you confirm the two products are genuinely additive rather than quietly overlapping.
At Adikteev, we’re continually refining how we measure incrementality across both CTV user acquisition and app retargeting, including in the post-ATT iOS environment where deterministic signals are scarce.
CTV and mobile retargeting are not competing channels; they are complementary products. CTV creates demand and shapes early consideration on the biggest screen in the home, while retargeting protects and compounds value by bringing users back at the moments that matter.
Because each does a job the other can’t, the combination covers more of the lifecycle than either could alone, and incrementality testing keeps you honest about the value they create.
The right time to run them together is once an app has sufficient scale, meaningful churn, clear lifecycle segmentation, and the ability to measure incrementally across channels. True app growth happens when you don’t just acquire users but bring them back, through context-driven, performance-focused campaigns that compound value over time.
Download our guides, follow our incrementality champions, or simply contact us to talk about incrementality measurement.