1. CardSender : Simply create your card, save it in galleryandshare it on whatsapp.
2. Auto-SMS : Carefully type the number, your message andsettime. Your message will be delivered at that particular timeviaSMS .
3. Card-SMS : Simply type the number and set time . Yourcardwill be delivered to the respective number at thattime.(Currently,available in android version 5.0 (lollipop))