Get-PsIntuneDevicesWithApp.ps1

function Get-psIntuneDevicesWithApp {
    <#
    .SYNOPSIS
        Returns Intune managed devices having a specified App installed
 
    .DESCRIPTION
        Returns Intune managed devices having a specified App installed
 
    .PARAMETER AppDataSet
        Applications dataset returned from Get-DsIntuneDeviceApps().
        If not provided, Devices are queried automatically, which will incur additional time.
 
    .PARAMETER Application
        Name, or wildcard name, of App to search for
 
    .PARAMETER UserName
        UserPrincipalName for authentication request
 
    .PARAMETER ShowProgress
        Display progress during execution (default is silent / no progress shown)
 
    .EXAMPLE
        Get-psIntuneDevicesWithApp -Application "*Putty*" -UserName "john.doe@contoso.com"
 
        Returns list of Intune-managed devices which have any app name containing "Putty" installed
 
    .EXAMPLE
        Get-psIntuneDevicesWithApp -Application "*Putty*" -UserName "john.doe@contoso.com" -ShowProgress
 
        Returns list of Intune-managed devices which have any apps name containing "Putty" installed, and displays progress during execution
 
    .NOTES
        NAME: Get-psIntuneDevicesWithApp
        This function was derived almost entirely from https://www.dowst.dev/search-intune-for-devices-with-application-installed/
        (Thanks to Matt Dowst)
 
    .LINK
        https://github.com/Skatterbrainz/ds-intune/blob/master/docs/Get-psIntuneDevicesWithApp.md
 
    #>

    [CmdletBinding()]
    param (
        [parameter()] $AppDataSet,
        [parameter(Mandatory)][ValidateNotNullOrEmpty()][string] $Application,
        [parameter()][string] $Version,
        [parameter(Mandatory)][ValidateNotNullOrEmpty()][string] $Username,
        [parameter()][switch] $ShowProgress
    )
    Write-Verbose "Getting authentication token"
    $AuthHeader = Get-AuthToken -User $Username

    Write-Verbose "getting all devices in Intune"
    $AllDevices = Get-MsGraphData "deviceManagement/managedDevices"

    # Get detected app for each device and check for app name
    [System.Collections.Generic.List[PSObject]]$FoundApp = @()
    $wp = 1
    Write-Verbose "querying devices for $Application $Version"
    foreach ($Device in $AllDevices) {
        if ($ShowProgress) { Write-Progress -Activity "Found $($FoundApp.count)" -Status "$wp of $($AllDevices.count)" -PercentComplete $(($wp/$($AllDevices.count))*100) -id 1 }
        $AppData = Get-MsGraphData "deviceManagement/managedDevices/$($Device.id)?`$expand=detectedApps"
        $DetectedApp = $AppData.detectedApps | Where-Object {$_.displayname -like $Application}
        if (![string]::IsNullOrEmpty($Version)) {
            $DetectedApp = $DetectedApp | Where-Object { $_.ProductVersion -eq $Version }
        }
        if ($DetectedApp) {
            $DetectedApp | 
                Select-Object @{l='DeviceName';e={$Device.DeviceName}}, @{l='Application';e={$_.displayname}}, Version, SizeInByte,
                @{l='LastSyncDateTime';e={$Device.lastSyncDateTime}}, @{l='DeviceId';e={$Device.id}} | 
                    Foreach-Object { $FoundApp.Add($_) }
        }
        $wp++
    }
    if ($ShowProgress) { Write-Progress -Activity "Done" -Id 1 -Completed }
    $FoundApp
}