{
  "status": "Illustrative acceptance plan, not an executable test suite or observed production result",
  "topic": "Cost per install versus activated users",
  "date": "2026-11-04",
  "sourceArticle": "https://aptixlabs.com/insights/cpi-vs-activated-user-cost",
  "setup": [
    "Use synthetic accounts and records",
    "Record the environment and implementation version",
    "Agree the expected product contract before testing"
  ],
  "reviewSequence": [
    "Define each funnel stage and attribution window",
    "Keep spend and outcomes in comparable cohorts",
    "Calculate install and activation costs separately"
  ],
  "cases": [
    {
      "id": "1",
      "condition": "Campaign has zero activations",
      "expectedBehavior": "Do not report a finite successful activation cost",
      "observedBehavior": null,
      "status": "not_run"
    },
    {
      "id": "2",
      "condition": "An install is duplicated",
      "expectedBehavior": "Apply the reporting deduplication policy",
      "observedBehavior": null,
      "status": "not_run"
    },
    {
      "id": "3",
      "condition": "Attribution windows differ",
      "expectedBehavior": "Disclose the mismatch before comparison",
      "observedBehavior": null,
      "status": "not_run"
    }
  ],
  "tradeoff": "Attribution can be incomplete and retention takes time to observe. Use consistent definitions and confidence about data quality before optimizing small numerical differences between campaigns."
}