Definition
An MMP (mobile measurement partner) is a third-party service that records ad clicks, app installs and in-app events, decides which ad earned each install, and reports the result across all your ad channels in one place. Because it applies one counting rule to every channel, its report is the one you use to compare them.
How it works
An MMP has three parts. An SDK inside your app reports each first open and each event you choose to send. Tracking links and integrations with ad platforms report the clicks and views that came before. A matching system then pairs the two and gives each install to one source.
The result goes two ways. You see it in a dashboard, split by channel, campaign and creative. The ad platform receives it as a postback, which its bidding system can use to find more people like the ones who converted.
When it matters
You need an MMP when you pay for installs on more than one channel, or when you want to judge a channel by purchases as well as installs. Each ad platform reports only its own activity and counts by its own rules, so two platforms can both claim the same user. The MMP applies one rule to all of them and counts that user once.
An app with no paid traffic can wait. The guide on whether you need an MMP at all covers that decision.
How it relates to attribution
Attribution is the task and the MMP is the company that performs it. It works through integrations with the ad platforms. Settings such as the lookback window are the rules you give the MMP for making each match.
More terms
Glossary
InstallIn mobile attribution an install is counted when a person opens the app for the first time, not when the store download finishes. Why the two numbers differ.
Glossary
Organic installAn organic install is an app install that an MMP cannot match to any ad click, ad view or tracking link. What the label means and how to use the number.
Glossary
Lookback windowA lookback window is the period after an ad click or view during which an install can still be credited to that ad. How it works and how to choose one.
Buyer's guide
Best mobile attribution for your first paid campaignsWhat mobile attribution does, four questions to ask before you pick a tool, and what the entry plans of six providers cost.
Cite this page
Airbridge. “MMP (mobile measurement partner).” bestmobileattribution.com. Reviewed 2026-11-10. https://bestmobileattribution.com/glossary/mmp