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User Acquisition

Cost Per Click (CPC)

Also known asCPCCost Per ClickPay Per Click

The price an advertiser pays each time a user clicks their ad. CPC sits between CPM (paying per impression) and CPI (paying per install) on the risk spectrum.

Key takeaways

  1. 01CPC = ad spend ÷ clicks. You pay per click whether or not the click leads to an install.
  2. 02On the pricing-risk spectrum CPC sits between CPM (advertiser carries all conversion risk) and CPI (network carries it).
  3. 03CPC ÷ click-to-install rate ≈ your effective CPI — the bridge between the two metrics.
  4. 04Typical mobile CPCs run $0.10-$2 depending on network, geo, audience, and placement.

Cost per click (CPC) is the price an advertiser pays each time a user clicks an ad. It is one of the three core user-acquisition pricing models, sitting between [[cpm]] (cost per thousand impressions) and [[cpi]] (cost per install) on the risk spectrum: with CPM the advertiser pays for views and carries all the downstream conversion risk; with CPI the network is only paid on an install and carries that risk; CPC splits the difference — you pay for demonstrated interest (a click) but not for the install itself.

Formula: CPC = total ad spend ÷ total clicks. Spend $2,000 for 4,000 clicks and your CPC is $0.50. The metric that ties CPC to install economics is the click-to-install rate: effective CPI ≈ CPC ÷ click-to-install rate. A $0.50 CPC at a 25% click-to-install rate implies a $2.00 effective CPI.

What drives CPC: auction competition, targeting precision (narrow high-value audiences cost more), creative click-through rate (higher CTR usually lowers effective CPC on auction networks), placement (search and high-intent social cost more than display), and geo (Tier-1 markets cost multiples of emerging ones). CPC is most useful when the click is a meaningful intent signal and you can measure click-to-install and install-to-value downstream; for pure performance UA, [[cpi]] or value-based bidding (tCPA / [[roas]]) is usually the better contract.

Quick answers

How is CPC calculated?

CPC = total ad spend ÷ total clicks. Spend $2,000 for 4,000 clicks and your CPC is $0.50. To connect it to install cost, divide CPC by your click-to-install rate: a $0.50 CPC at a 25% click-to-install rate implies a ~$2.00 effective CPI.

What is the difference between CPC, CPM, and CPI?

They are the three UA pricing models, differing in what you pay for: CPM = per 1,000 impressions (you pay for views), CPC = per click (you pay for interest), CPI = per install (you pay for the outcome). Risk shifts from advertiser to network as you move CPM → CPC → CPI, and price per unit rises accordingly.

What is a good CPC for mobile apps?

Highly variable — roughly $0.10-$2 depending on network, geo, audience, and placement. High-intent search and social placements in Tier-1 markets run higher; broad display in emerging markets runs lower. Benchmark against your own click-to-install and install-to-value rates, not a universal number: a high CPC can still be profitable if those downstream rates are strong.

How do I lower my CPC?

Improve creative click-through rate (most auction networks reward CTR with a lower effective CPC), test targeting and placements, and improve relevance/quality scores where the network uses them. But CPC is a means, not the goal — optimize for downstream CPI and ROAS, not CPC in isolation.

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