Interview with David Koretzky


mysql database app for iphone interview with developer1. When did you start developing apps for the iPhone?

David Koretzky: Not long after the SDK was released. I downloaded and tested some concepts. I already have development experience on Mac OS X, and the leap is not far from the desktop OS to the iPhone.

2. What was the inspiration behind your app?

David Koretzky: As a developer, I have worked with DBAs (Database Administrators) in the past. They are almost constantly on call to perform some database management task. Some haul laptops with them everywhere just in case. So, for PostgreSQL databases, I came up with MobileCan (soon to be upgraded and improved), and for the very popular MySQL, I came up with iMy. Some of the most complex database tasks can be achieved very quickly with a few taps.

3. How did you settle on your price point for the app?

David Koretzky: This was tricky, especially since I completed my first app not long after the store went live, and there were no apps with quite the theme of mine. I scoured the net and looked at what people thought an app should be worth. I settled on $7.99 because I think it is fair for what these apps do as far as convenience and functionality.

4. Roughly how many apps did you sell in the first month of operation

David Koretzky: Sales of MobileCan were slower than I anticipated, but sales of iMy have been brisk, and I have been getting good feedback from users.

5. How did you like the developer tools provided in the iPhone SDK? is there anything missing?

David Koretzky: The tools are very good. If you are familiar with developing on Mac OSX, then the move is trivial.

6. Is your company privately owned? Venture backed?

David Koretzky: Privately owned.

7. What are some of the other iPhone apps that you like?

David Koretzky: I am completely addicted to Morocco. I remember in the Windows 3.0 days playing Reversi endlessly. Having that app with me everywhere makes waiting at a restaurant or store nontrivial. I also like the FuelGauge app. Very handy.

8. What kind of features should apple implement in future versions of the iPhone / SDK?

David Koretzky: I would like to see direct access to call statistics, perhaps for a billing type of application.

9. What’s the development cycle for iPhone apps like?

David Koretzky: Because the phone does not have the properties of a desktop app, it is very brisk. There are no overlapping windows, or other interactions to get in your way. Every windows fills the screen. That makes certain development tasks easier, it also means that interface considerations are very important. There is limited space, and only one window. That means that a lot of time has to be given to make sure the app is usable. I spent a great deal of time on the SQL editor in iMy, to reduce the amount of keyboard usage to type complex queries.

10. Are you working on any other apps that you will be releasing soon?

David Koretzky: I am playing with a few very vague concepts right now, but I am working on improving my first two apps. MobileCan is being updated with the interface of iMy.

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