You don't HAVE to if you don't want to but it's much better if you do. Why? Because it gives you the latest version of that app. That app may have bugs, or it may not have too many details. When the producers released the update they would have fixed that.
maybe they dont require an update!Apps that need an update will show up in your AppStore icon as a number in the corner of the icon. No number means no updates are available. You need to be in a WiFi hotspot to update, and some hotspots (like my favorite coffee shop) will not allow this kind of activity.
It seems to happen when the space is running low on the device. I believe a warning message for not able to use "update all" when low space is missing, making it look like a bug, but that is just a guess.
apple create the apps on iPhone
It is called "App Store" and it lets you look through a list of all the apps that are available, and download apps.
lite apps are supposed to be like a preview or a sample of the app like try before you buy