The best replacement for wechat is whatsapp.

The best alternatives to wechat are rated as following:
★★★★★  whatsapp
★★★★  line
★★★  qq
★★★  weibo
★★  weixin
★★  kakaotalk
★★  viber
★★  tango
★  line which is better
★  whatsapp users
★  kakao
★  kik
  voxer
  bbm
  momo
  talkbox
  hike

Your alternative for wechat is not listed? Suggest!
Speaking about wechat, one probably shouldn't forget about qq.

Other search terms related to wechat and their ratings are:
★★★★★ qq
★ moment
You have in mind a companion for wechat and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of wechat in all years. Click on graph for more.
wechat
whatsapp
line