Blended Cost per App Install: Cross-Platform Acquisition Efficiency

Track your blended cost per app install (CPI) across Meta, Google, and TikTok. Measure mobile acquisition efficiency and optimize your app install campaigns.

Blended Cost per App Install measures the average cost to acquire one mobile app install across all your advertising platforms combined.

Formula

Blended Cost per App Install = Blended Spend ÷ Blended App Installs

Formula Components

Metric	Definition
Blended Spend	Total advertising spend across Meta, Google, and TikTok combined
Blended App Installs	Total app installs attributed across all advertising platforms

Metadata
Type	Currency
Data Source	Meta Ads, Google Ads, TikTok Ads
Aggregation	Ratio

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Example

Your app campaigns spent $15,000 across all platforms and generated 3,000 installs in March.

Platform	Spend	App Installs	CPI
Meta Ads	$8,000	1,800	$4.44
Google Ads	$5,000	900	$5.56
TikTok Ads	$2,000	300	$6.67
Blended	$15,000	3,000	$5.00

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How It Works

Blended CPI aggregates your total advertising spend and total app installs across Meta, Google, and TikTok, then calculates the average cost per install. This gives you a single efficiency metric that accounts for your entire mobile acquisition budget regardless of which platform drove the install.

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When to Use

Scenario	Action
Setting acquisition budgets	Use blended CPI to establish target cost thresholds for mobile campaigns
Comparing to industry benchmarks	Compare your overall CPI against category averages without platform bias
Executive reporting	Report a single efficiency metric that represents total mobile acquisition cost
Evaluating media mix	Identify if shifting budget between platforms would lower overall CPI

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Related Metrics

Metric	Relationship
Blended Spend	Numerator — total cost driving app installs
Blended App Installs	Denominator — total installs acquired
Blended CPA	Similar efficiency metric for all conversions

See all Blended Conversions metrics →