“Does anyone know of a decent iPhone backup extractor to recover app data from iTunes backup file (iOS 11) on Windows?”

Finally, you can use iBackup Extractor to create new backups of your iPhone, iPad, and iPod Touch, as well as restore your device from backup.“Is there any iTunes Backup Extractor support accessing and recovering data from an encrypted iTunes (iPhone) backup for free with the decryption password? By the way, I own a Mac.” Another feature present in iBackup Extractor is the Backup Explorer, which allows you to see the file system itself, and to copy files from it. Literally, click 'Copy' to transfer those files, converted to a readily available format, directly to your computer. Once you've selected what you wish to extract, the operation is as simple as clicking a button. You can choose the backup you wish to browse and extract files from, and proceed to view the backup of your Call Logs, Contacts, Messages, Photos, Calendars, Internet Browsing History and Bookmarks, Notes, App Data, all directly in Backup Extractor. IBackup Extractor finds your iPhone, iPod Touch, and iPad backups automatically. These are the backups created by iTunes when it synced your device in the past. If your iPhone, iPod Touch, or iPad is lost, stolen, or not working, or if you accidentally deleted some of your contacts, photos, or SMS, use iBackup Extractor to browse and extract files from your iTunes backups.

IBackup Extractor allows you to access and recover your files from your iTunes backups.

Ibackup viewer review