Frankly it is quite difficult to compare a social network Twitter and an instant messaging app like LINE. Whatever, we believed LINE will fall in the next 5 years.
LINE emerged and accessed the market by attracting user with fancy stickers. They successfully attracted female user which leads to pulling more male user into LINE.
But LINE is currently suffering from very bad initial design. Providing maybe the worst user experience among popular chatting app.
- User receives spam message everyday. (Bank loan, prostitution ads)
- Extremely difficult chat history backup and transfer (Ask yourself and your friends, where is your precious chat history?)
- Cross-platform support. (Limited to one phone, one desktop at a time)
- No Web Version (I'm traveling and lost my phone. No more LINE for me!)