Restoring one application data from ClockModRecovery Backup I was using CyanogenMod 4.10.3. Due to slow-downs I decided to downgrade, but took a backup of all available apps using ClockModRecovery including WhatsApp. 

In backup/ directory, I see some img files, not individual apps.

Since I changed my number and I would like to use my old number with WhatsApp, I would like to restore WhatsApp backup from this backup. Is it possible?
Yes, it is:


Titanium Backup can restore from nandroid backups (which is what CWM created)
AppExtractor can extract individual apps/data from Nandroid backups
Nandroid Browser lets you... guess what :)
and then there's Nandroid Manager to browse them, restore single items, etc.


Further readings:


the nandroid tag-wiki
Restore only part of nandroid image
Extract App Data from Nandroid / CWM Backup