There is a cool little stuff when you login into hn, it has 1password support.

To be frank, in order to maintain a business, you can't just do all the things alone. So it's really common to have more than one person as the founders of a company. The idea is, it's better to have at least one partner who is growing the same direction as yours. So a technical person would be the best candidate, i would say.

That's what I thought too - that's why I am just curious if there is any great example that founded only by one designer founder, though I totally understand the importance of having a co-founder with strong technical background.

The article doesn't seem to count app income at all, just revenue (not profit!) from initial sales of the devices.

Seriously? Anyone with good logic interpretation could have solved it within minutes.

This is more of a proof-of-concept/excuse to learn core.logic :)

I would really prefer using storyboards that debugging through each line of codes. Not to mention the hierarchy of views that makes it hard to read sometimes. Autolayout is fantastic but i'm not sure about the limitation when it comes to complex UI(it's kind of vague for the term complex actually). Apple introduces a new feature on autolayout this year where you can install/ uninstall constraints depending on size classses. This is really helpful if you care about the app orientation.

Great idea but i would doubt the cost of service maintenance when it comes to a machine. Human labour ends up to be more cheaper than getting a robot.