When you hide an app, it won't appear in your list of purchases in the App Store. If you use Family Sharing, the app also won't appear in family members' purchases and won't be available for family members to redownload. But the app will still appear in your purchase history. Hiding an app won't remove it from your device, a family member's device, or other devices that are signed in with your Apple ID. You can't unhide an app on your iPhone, iPad, or iPod touch, but you can redownload an app. You don't have to buy the app again.
How To Delete Apps From iCloud & Purchase History
How to Hide Apps in the iPhone or iPad Purchased List
By default, the apps your download or purchase are logged by Apple and can be looked up by others using your account. With iCloud, you get peace of mind and convenience as digital assets including your important photos and files are stored on its servers, so you can access them wherever you go. The apps you download are backed up in iCloud, so if you want to remove the ones you no longer need especially when using family sharing, you can delete them or hide them from your purchase history. What fills up the space is the data from the apps. The purchase history shows the list of apps, movies, songs, TV shows and books among other items you purchased with your Apple ID. Not only that, but you can also request a refund, see the date an order was billed or you bought an item, the payment method charged for the item, and even resend a receipt to yourself via email. To remove apps from purchase history, open App Store, tap on your profile picture at the top right side of the screen, and select Purchased.
How to Delete Apps from iCloud Including Purchased Apps
This article explains how to hide apps you previously purchased on an iPhone or iPad. These instructions will likely work on earlier versions of those operating systems, although menu names and commands and their locations may be different. Tap App Store. In the App Store, in the upper right corner, tap your profile picture. On the Account screen, tap Purchased to view the apps you've downloaded.
While the daily usage of your iPhone, you may purchase various Apps to use. These purchased apps from App Store will be backed-up in your iCloud account. Some useless apps in your purchase history will still be there even you have uninstall them.