In big Jira instances it is common that so many apps get bought, installed and used. This App offers a single page overview where you can quickly check which licenses are going to expire within the next days or months or which one have already expired.
This help admins to plan ahead checking if the apps expiring in the 3 or 6 months should be renewed or maybe removed.
Use the App Info Exporter to store the current list of apps (including their version, Status ...). This is can be used as a backup before updating many apps. If you have to downgrade, you know exactly which version were installed.
Future improvement: Show monthly/yearly report of all apps (newly installed, removed, version upgrade, ...), ability to add notes to each app, ...