iCloud backup?

Howdy Dsn660,

The iCloud backup does include app data.

iCloud: iCloud storage and backup overview

Your iCloud storage is used for iCloud Backup, iCloud Drive, iCloud Photo Library beta, app data and documents stored in iCloud, and iCloud Mail (your @icloud.com email account).

More specifically, further down it says:

What iCloud backs up

Cloud automatically backs up the information on your devices—iPhone, iPad, and iPod touch—over Wi-Fi every day when they are turned on, locked, and connected to a power source. With your device information backed up in iCloud, you can easily set up a new device or restore information on one you already have.

Here’s what iCloud backs up:

• Purchase history for music, movies, TV shows, apps, and books
  Your iCloud backup includes information about the content you have purchased, but not the purchased content itself. When you restore from an iCloud backup, your purchased content is automatically downloaded from the iTunes Store, App Store, or iBooks Store. Some types of content aren’t downloaded automatically in all countries, and previous purchases may be unavailable if they have been refunded or are no longer available in the store. For more information, see the Apple Support article iTunes in the Cloud availability by country. Some types of content aren’t available in all countries. For more information, see the Apple Support article What can I buy from the iTunes Store in my country?.
• Photos and videos on your iOS devices, unless you turn on iCloud Photo Library beta on your iOS 8.1 device. If you turn on iCloud Photo Library beta, your photos and videos are already stored in iCloud, so they aren’t included in your iCloud Backup.
• Device settings
• App data
• Home screen and app organization
• iMessage, text (SMS), and MMS messages
• Ringtones
• Visual Voicemail

Take care,

Nubz