With people downloading so many apps on their iPhone, space tends to fill up rather quickly. Since all the apps and their data is synced via iCloud, and the information stored in cache memory. While, you won’t find a lot of space being taken up, it can lead to useless information being saved on your iCloud account. Apple does not provide a direct delete feature to its users when it comes to deleting apps from iCloud, however, you can still hide them.

How to Hide Unwanted Apps from iCloud

Step 1. Go to the App store on your iPhone and open up updates.
Step 2. Tap on Purchased.
Step 3. On your Mac, open up iTunes and click on the purchased option there as well.
Step 4. You will see a history of all the apps downloaded.
Step 5. Place the mouse pointer over the app that you want to hide and click on “X” which will appear.
Step 6. Your app list will be updated and you can check it on your iPhone.

To unhide Apps from iCloud, follow the below steps:

Step 1. Launch Settings App on your device.
Step 2. Tap iCloud.
Step 3. You will be required to sign into your iCloud account if not already signed in.
Step 4. Turn on “Show on Home Screen” to unhide.

How to Delete Data That Apps Stored in iCloud

You have to remember that all your data from the downloaded apps is going to be stored on iCloud. Sometimes, this can lead to inconvenience for the user as there private information can be integrated with the data from apps. It can pose a security risk and take up a lot of space as far as overall storage is concerned. Even if you have deleted the apps that you do not need anymore, the data from those will still remain with iCloud.

In order to simply delete the app data from iCloud, you can:

Step 1. Go to Settings and Press iCloud.

Step 2. Then tap on Storage and Backup. After pressing on Manage Storage, users can look under Documents and Data.
Step 3. You can choose the app that you want to delete the data for.
Step 4. Press Edit and Tap delete.
Step 5. Confirm the action.

Source: http://www.techykeeday.com/delete-apps-icloud/

really nicely explained article. Thanks. Screenshot on Mac