What Is CPI in Mobile Games, and How Do You Lower It?

CPI means cost per install: the amount you pay in advertising to get one person to install your game. If you spend 500 dollars and get 1,000 installs, your CPI is 0.50 dollars.

It is one half of the equation that decides whether a game is a business. The other half is what a player is worth to you.

What a normal CPI looks like

CPI varies enormously by country, platform, and genre. Broad orientation:

• Tier one markets such as the United States, United Kingdom, and Australia are the most expensive, often several dollars for mid core games
• Emerging markets can be a fraction of that
• iOS generally costs more than Android
• Casual and hyper casual sit lower, mid core and strategy sit much higher

Never compare your CPI to someone else's without matching country, platform, and genre. The numbers are meaningless out of context.

What actually drives CPI down

Creative quality. This is the biggest lever by a wide margin, and it is the one most teams underuse. A video ad that communicates the fun in three seconds can outperform a mediocre one many times over on the same budget and audience.

Test many creatives. Most will underperform. The winners fund everything.

The store listing. Ads get people to the store page. The page converts them into installs, or does not. Improving your icon, first two screenshots, and preview video improves CPI without touching the ad spend at all, because more of the traffic you already paid for converts.

Targeting the right countries. Do not buy expensive installs in expensive markets before you know your retention holds. Prove the game works cheaply, then scale into premium markets.

Ratings and reviews. A 4.5 star game converts better than a 3.8 star game from the identical ad. Early reviews are worth chasing.

What does not work

Bidding more aggressively does not lower CPI, it raises it. Buying installs from low quality networks lowers the number but delivers players who never come back, which is worse than paying more for real ones.

Beware anyone selling you very cheap installs. You usually get exactly what you paid for.

The number that actually matters

CPI on its own means nothing. A 4 dollar CPI is excellent if players are worth 12 dollars. A 0.15 dollar CPI is terrible if players are worth 0.05 dollars.

Track CPI against lifetime value, and track how long it takes to earn back what you spent. If you cannot recover the cost within a reasonable window, you are funding growth out of pocket indefinitely.

Where to start

Fix retention before you spend anything. Then improve your store listing. Then test creatives properly, with enough budget per variant to learn something real.

Buying traffic for a game people leave is the fastest way to spend a marketing budget with nothing to show for it.