The scenario is as follows; You can have many apps that have accumulated over the years and for various reasons have uninstalled some of them. Now one (or more) of the apps that is no longer installed has a compelling update (new features, reworked UI/UX etc).
How can you know that this update has happened? The purchased app list just shows apps not on your device listed in purchased order. This is the way its been as long as I can remember. Prior to iTunes 12.7 (removed app store) checking for app updates in iTunes would surface updates to installed and uninstalled apps. Now this is not possible.
An example: year ago Camera+ was purchased and then uninstalled from iPhone, today Camera+ gets a nice update adding depth info and a reworked camera UI. As far as I can tell you have no way of knowing this updated occurred.
How can you know that this update has happened? The purchased app list just shows apps not on your device listed in purchased order. This is the way its been as long as I can remember. Prior to iTunes 12.7 (removed app store) checking for app updates in iTunes would surface updates to installed and uninstalled apps. Now this is not possible.
An example: year ago Camera+ was purchased and then uninstalled from iPhone, today Camera+ gets a nice update adding depth info and a reworked camera UI. As far as I can tell you have no way of knowing this updated occurred.