A small app to create pretty wallpapers for iPhone and iPad out of various map designs. Has become quite popular in Germany.
It started after I tweeted a screenshot of my iPhone home screen and people wanted me to make them a similar wallpaper of their city, so I built an app for it. Took exactly one week from tweet idea to App Store!
Completely agree, among my peers at university those who had spent the last four years creating a network on Twitter and Github did significantly better at finding a graduate job than those who didn't.
Most of my friends have the job they have because of a combination of Twitter and attending conferences on discounted student tickets.
I wholeheartedly agree, Typora is my favourite markdown editor. For those few times you really need to just edit the markdown you can quickly turn off rendering and switch into source mode by hitting cmd-/.
I disagree with your first point, if you're using Instagram you're accepting it will be using a lot of data. Further, part of the thing that makes Stories a great feature is the smooth storytelling that would be lost if a "Download this video" button appeared.
I completely agree with your second point however. Make it more like Snapchat and have both types of direct messages; ephemeral and permanent.
Not sure what you're polling, but it says it's not available in Australia despite Australia being the first release country. Might just want to check that out.