If you had backup your iPhone WhatsApp Chats with iTunes, when deleted WhatsApp messages accidentally, you can restore them with WhatsApp Pocket. It can help you recover deleted chats including Messages Photos, Video, Audio and Voice Message via WhatsApp , and save to computer.
iPhone WhatsApp Chats Backup & Recovery, WhatsApp Chats Transfer
> Extract, Backup WhatsApp Chat History from iPhone to Computer
> Save Messages, Photos, Video, Audio and Voice Message to Mac
> Support New iOS 7 and iPhone 5S, iPhone 5C, iPhone 5, 4S, 4, 3GS