WhatsAPP Vs Viber which of these are best

WhatsAPP Vs Viber which of these are best

Hi Ppercy,
The comparison between WhatsApp and Viber is as follows:
1) Compatibility: The compatibility for WhatsApp is with Nokia S40 Symbian, S60, Android, iOS, BB, Windows Operating system. The compatibility for Viber is with Nokia S60, Android, Windows, iOS, Blackberry, Bada
2) Price: The WhatsApp is free for the first year of use. Viber is always free of cost
3) Communication Features: WhatApp communicates with the users through text, photos, videos, audio clips.
Viber communicates with the users through text, photos, videos, location data, voice calls
4) Desktop Compatibility: WhatsApp does not provide the compatibility with desktop
Viber has compatibility with Mac, Windows desktop
5) Emoticons: WhatsApp uses standard Emoji keyboard. Viber uses custom emoticons and stickers
6) Group Chat: WhatsApp uses 30 participants. Viber uses 39 participants.
7) Backup options: WhatsApp uses manual backup and restore for Android, Blackberry and Nokia.
Viber uses basic text backup attached to email
By this comparison, Viber is better over WhatsApp.