Twitter needs to find a foothold of a significant and meaningful size on mobile.

So far, it’s still dwarfed by Facebook, which Flurry reported comprises 18% of users’ on-device activity.

Twitter, along with all other non-Facebook social networks, only accounts for 6% of user activity.

All web browsing combined only accounts for 20 percent of user activity.

Sarah Perez: "Facebook, despite anecdotal reports to the contrary, isn’t struggling to find traction with its youngest users. According to Pew Internet & American Life’s latest figures, 86 percent of Internet users 18 to 29 use Facebook today. The site is not in decline, and according to new data from J.P. Morgan analyst Doug Anmuth (via All Things D), Facebook is growing more than other mobile competitors like Twitter, Snapchat, WhatsApp and even its own property, Instagram."

This statistics tells me that if I make leisure app, I better go native. If I take out the "leisure activities" like: Games, Social Networking, Facebook and Entertainment, the browser prevails. 

Basically, if I do anything productive like news, productivity or education, it's more like 50/50. 

That sounds exactly right, Sergey.

What you develop depends on the nature of the app.

Mark Zuckerberg says Facebook + Instagram represent one fourth of all time spent on smartphones.

http://www.businessinsider.com/facebook-home-google-android-2013-4