Ouput CSV format

I have a script with outputs data regarding Citrix Applications

$header = "Application,Count"
$outFile = "c:\CitrixCount\apps.csv"
Set-Content -Path $outFile -Value $header -Encoding Ascii
$applist = "Insphire","Nav 5"
foreach ($app in $applist){$appCount = (Get-XASession -BrowserName $app | select AccountName).count
Add-Content -Path $outFile -Value "$app,$appCount"}

The output create rows for each application.

I want the output to create a single row