The above question may arise in our mind, because WhatsApp is gaining popularity around smartphone users. Just look at the fact sheet: WhatsApp and SMS fact sheet WhatsApp SMS Cost Fact To use WhatsApp you need a Smartphone and download this app. WhatsApp Android app download size is 12MB and that deducts from your mobile balance. SMS comes as in-built service in mobile phone Do you know? WhatsApp is not at all FREE service. This service is a trial application and\u00a0FREE for 1 year\u00a0and after that you need to pay\u00a0$0.99 USD\/year to continue its usage. So, after 1 year your monthly cost to retain this app will cost you $0.99 USD\/ 12 month $0.0825 USD\u00a0? Rs.\u00a05.13 INR (in Indian currency) To retain SMS service you don't need to pay any money. It deducts money while send you SMS to someone To send a simple message it cost you around 0.58 INR (approx) To send a normal text SMS cost you Rs. 1 INR for Local, Rs.\u00a01.5 for National and Rs. 5 for International If you have any inputs just let your comment on it.