--- title: "Predefined Segments: First Time/Last Time Open" slug: "predefined-segments-first-timelast-time-open" description: "The First Time/Last Time Open segment targets mobile app users by their first or most recent app open within a defined time period." tags: ["first time open", "last time open", "predefined segments"] updated: 2026-07-30T13:47:42Z published: 2026-07-30T13:47:42Z canonical: "academy.insiderone.com/predefined-segments-first-timelast-time-open" --- > ## Documentation Index > Fetch the complete documentation index at: https://academy.insiderone.com/llms.txt > Use this file to discover all available pages before exploring further. # Predefined Segments: First Time/Last Time Open The First Time / Last Time Open segment targets users who opened the [Mobile App](https://academy.insiderone.com/docs/app-templates) for the first time or most recently within a defined period. You can use this to engage new app users or re-engage users based on their most recent activity.![](https://cdn.document360.io/c6df4583-da94-4cb2-bb8a-be0cbdd11109/Images/Documentation/image-1731683483925.png) > This information is based on the user’s last update date information and is stored for 12 months after the last update. ## Requirements To use this segment: - The [Mobile App Suite](/v1/docs/app-integration-wizard) must be subscribed, activated, and integrated. - There must be at least one user with a recorded app session in the Insider One database. ## Configure the First Time / Last Time Open segment 1. Select First Time or Last Time from the dropdown menu. 2. Set the time interval to define your targeting period. ![](https://cdn.document360.io/c6df4583-da94-4cb2-bb8a-be0cbdd11109/Images/Documentation/image-1681900364744.png)