TikTok Cost per App Install: CPI for App Campaigns

The average cost to acquire one app install from your TikTok advertising.

Formula

TikTok Cost per App Install = TikTok Ad Spend ÷ TikTok App Installs

Formula Components

Metric	Definition
TikTok Ad Spend	Total amount spent on TikTok advertising
TikTok App Installs	Number of app installs attributed to TikTok ads

Metadata
Type	Currency
Data Source	TikTok Ads
Aggregation	Ratio

Example

Your app install campaign spent $2,400 and drove 800 installs this week:

Ad Group	Spend	Installs	CPI
Lookalike Audience	$1,200	480	$2.50
Interest Targeting	$800	240	$3.33
Retargeting	$400	80	$5.00

How It Works

CPI divides your TikTok ad spend by the number of app installs TikTok attributes to your ads. Lower CPI means you’re acquiring users more efficiently. TikTok tracks installs through its SDK integration with your mobile app.

When to Use

Scenario	Action
Evaluating app campaign efficiency	Compare CPI across ad groups and creatives
Setting install targets	Use CPI to forecast budget needed for install goals
Benchmarking performance	Compare your CPI to industry averages
Optimizing creative	Test new creatives to lower acquisition cost

Metric	Relationship
TikTok App Installs	The denominator for CPI
TikTok CPA	Cost per purchase (compare to CPI for full-funnel view)

See all TikTok Conversions metrics →

TikTok App Installs TikTok Registrations

⌘I

​Formula

​Formula Components

​Example

​How It Works

​When to Use

​Related Metrics

Formula

Formula Components

Example

How It Works

When to Use

Related Metrics