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Reattribution Window

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The time period during which an MMP can reassign credit for an install or event to a different marketing source if the original attribution is invalid (e.g., if fraud is detected).

Reattribution and fraud prevention

One of the main use cases for reattribution windows is fraud detection. If fraudulent activity is identified after attribution has already occurred, the MMP can correct the data by reallocating credit or invalidating the event. Common types of fraud include click flooding, click spamming, or install hijacking. By enforcing reattribution windows, MMPs protect advertisers from paying for invalid traffic and maintain trust across the advertising ecosystem.

Impact on marketing analytics and reporting

Reattribution windows significantly improve the reliability of marketing analytics and reporting. Accurate attribution is essential for evaluating key performance metrics, such as:

  • Cost per install (CPI): ensuring spending aligns with real, validated installs

  • Return on ad spend (ROAS): calculating revenue generated per marketing dollar spent

  • Lifetime value (LTV): understanding the true value of users acquired through campaigns

Without reattribution, these metrics can be skewed by fraudulent or misattributed events, leading to misinformed decisions, inefficient budget allocation, and potentially wasted ad spend. By integrating reattribution processes, advertisers gain more precise insights into which campaigns and channels are genuinely effective.

Balancing user experience and data accuracy

While reattribution is vital for accurate reporting, it must be implemented in a way that preserves the user experience. Users may install, uninstall, and reinstall apps multiple times, and these events need to be handled carefully to avoid duplicate charges, false reporting, or misleading performance data.

Best practices for balancing reattribution and user experience include:

  • Handling reinstall events accurately: track re-installs without counting duplicate conversions

  • Maintaining seamless user interactions: ensure users are not interrupted or confused by repeated prompts or messages

  • Integrating with analytics systems: align reattribution events with dashboards and reporting tools to maintain clean and actionable data

By combining robust fraud detection with careful handling of user activity, reattribution windows protect both advertisers’ budgets and the integrity of the user experience.