--- title: "Install the Mobile Check-in App" slug: "download-mobile-event-check-in-app" updated: 2026-02-04T16:36:02Z published: 2026-02-04T16:36:02Z canonical: "docs.blackthorn.io/download-mobile-event-check-in-app" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.blackthorn.io/llms.txt > Use this file to discover all available pages before exploring further. # Install the Mobile Check-in App ## **Prerequisites** ### Android Devices To use the Mobile Check-in app, Android devices must have the Version 9.0 operating system or higher. ### Review Salesforce Connected App Changes Salesforce recently announced a [change to its security policy](https://help.salesforce.com/s/articleView?id=005132365&type=1&utm_source=techcomms&utm_medium=email&utm_campaign=FY26_Core_4013001) around Connected Apps, effective August 28, 2025. As a result, Blackthorn recommends verifying that these Connected Apps are installed in your Salesforce orgs. - Blackthorn | Connected App - required for using Blackthorn Events and Blackthorn Payments - Mobile Check-in - required to use the Blackthorn Mobile Check-in app - Blackthorn | Mobile Connected App - required to use the Blackthorn Mobile Payments app - Blackthorn Message - required for using Blackthorn Messaging Please review the attached pdf for instructions to check that the required Connected Apps are installed and connected correctly. [PDF document](https://cdn.document360.io/f977eec0-500f-40a3-b663-724a51f78075/Images/Documentation/Salesforce%20Connected%20Apps%20Update%20Letter.pdf) ## Start Here ## [Embedded content](https://player.vimeo.com/video/902004462) Download the app! [Apple App Store (iOS)](https://apps.apple.com/us/app/blackthorn-mobile-check-in/id1593232213) or [Google Play Store (Android)](https://play.google.com/store/apps/details?id=io.blackthorn.mobilecheckin). Then log in with your Salesforce username and password and you are off to the races. ![F_01_ios pic](https://cdn.document360.io/f977eec0-500f-40a3-b663-724a51f78075/Images/Documentation/F_01_ios%20pic.png) ![F_01_android pic](https://cdn.document360.io/f977eec0-500f-40a3-b663-724a51f78075/Images/Documentation/F_01_android%20pic.png)