Every install has a backstory, and an attribution window is the rule that decides how far back that story is allowed to reach. When a user clicks or views an ad and later installs the app or completes an action, the window sets the maximum time that can pass between the two events for the ad to still receive credit. If the window has already closed, the conversion counts as organic instead of paid.

How it works

When a user interacts with an ad, the tracking system records a timestamp. If that same user installs the app before the window closes, a Mobile Measurement Partner (MMP) matches the two events and credits the ad. The Attribution Model then decides which touchpoint earns the credit when more than one falls inside the window. Clicks usually get a longer window than views because a tap is a stronger signal of intent. A common setup pairs a 7-day click window with a 24-hour view-through window.

Click-through vs. view-through windows

A click-through window covers users who tapped the ad. Because tapping shows deliberate interest, advertisers accept a longer lookback, often 7 days and sometimes more. A view-through window covers users who only saw the ad without tapping. That is a weaker link, so the window stays short, often 1 to 24 hours, to avoid crediting an ad for an install it barely influenced.

Why the window length matters

The window length changes the story your data tells. A short window undercredits channels where users take time to convert, making those channels look weaker than they are. A long window overcredits them, letting an ad claim installs that other factors actually drove. The right length depends on your app. A casual game with quick decisions may fit a shorter window, while a high-consideration app may need a longer one. Aligning windows across networks matters too, since a network measured on a 30-day window will always look stronger than one capped at 7 days. When you cannot align them, the fair move is to note the difference rather than rank the channels as if the playing field were level.

How offerwalls simplify attribution

Offerwalls make attribution unusually clean. When a user completes an offer on an offerwall, the completion is verified server-side and reported back through a postback within minutes, not days. Because the reward only fires on a confirmed action, the conversion is tied to a specific user and a specific offer with little ambiguity. There is no long lookback to reason about and no guessing about which impression mattered. That short, precise timing means offerwall attribution rarely runs into the over- or under-crediting problems that longer windows create for other formats.

Common mistakes to avoid

• Comparing networks that use different window lengths as if the numbers were equivalent.

• Setting one window for every campaign type instead of matching the window to how quickly users actually convert.

• Forgetting that a longer window inflates a channel's credited installs, which can distort your CPI (Cost Per Install) comparisons.