From Android to iOS, First Steps

EP Mobile has surpassed 10,000 downloads, and has matured to version 1.0.  It is time to start porting it from Android to Apple iOS.  This is a non-trivial task.  I wish there was a conversion program that could take the Android Java program code and, with a click of the mouse, automagically transform it into Apple Objective C code.  Alas it won’t be that easy.  The two programming platforms are completely different.  In addition Apple development requires Apple hardware.  So, in addition to the work involved, there is a monetary cost of development.  I haven’t had an Apple computer since my original Apple II+ from the early 80s which had a 1.5 MHz processor and 64K of RAM (yes that’s kilobytes, not megabytes let alone gigabytes).  Nevertheless, in my experience, more doctors and other medical personnel carry iPhones than Android phones; so, porting the program should be worth the effort.

I will keep a log of this porting process, and will share my experiences with you in the occasional blog post.  Here’s what I have done so far.  Step One was: Buy an Apple computer!  I didn’t want to spend a ton of money, especially since EP Studios is already chocked to the gills with various computers.  Other than when I am traveling, I prefer desktop computers to laptops.  Yet I didn’t want (or have room for) another complete desktop setup.

To the rescue, a nifty little device called a KVM switch.  I bought this one.

KVM Switch

This switch allows two computers to hook up to one monitor, keyboard, mouse, and speaker system.  The switch works great.  The only complaint I have is that my monitor has trouble switching; I have to turn it off and on so that it syncs properly when I switch computers.  But this is minor, and having this switch means all I needed was an Apple computer sans peripherals.  Apple makes such a computer, the Mac mini.  I purchased one from Apple (it is also the cheapest Apple computer) and it arrived in 3 days.  It is a little beauty of a powerhouse in a sleek aluminum package.

Newest Member of the EP Studios Family


I can see why people like Apple products.  The hardware is sturdy and elegant, and the software is beautifully designed.  It certainly helps to be a company that has total control over both hardware and software.  Poor Microsoft and Linux, having to make things work on thousands of different machines and peripherals with countless possible hardware configurations!  Especially pity Linux.  Microsoft at least has the clout to dictate their specifications to the hardware manufacturers.

The next steps were to download Xcode and the iOS development kit.  These are both in a single package and are available at  Now it was time to sign up for the developer program.  This costs $99 per year and you need to decide whether to register as an individual or as a company.  EP Studios, as meager as it is, is nevertheless a full-fledged corporation and I definitely wanted to distribute the program under the company aegis rather than my own name.  Googling around, it appeared that signing up as a company might be a hassle.  Supposedly you need to provide things like copies of your company’s Articles of Corporation and from the stories on the Internet, it looked like the approval process by Apple might take several weeks.  Even the iOS book I bought, Beginning iOS 5 Development, solemnly warns “If you are going to sign up for the Standard or Enterprise program, you should do it right now.  The approval process can take a while…”  Well, imagine my surprise when, less than 24 hours after initiating the process, I get an email from Apple saying they had trouble calling my cell phone and to call them back.  I called the number, got right through to a human being, who asked me for my email and phone number, and then said that my application was approved.  I got another email, clicked through, and, after shelling out the $99 fee, I was in!  Much smoother than expected.  Not as smooth though as Android, where all I had to pay was a $25 one-time fee.  But not too bad either.

Now I have downloaded some open source essentials like git and Gimp.  I have Xcode up and running. I am starting on some Xcode/Objective C tutorials.  In my next post in this series I will comment on my experiences in transmogifying Java and XML to Objective C.  Stay tuned.

By mannd

I am a retired cardiac electrophysiologist who has worked both in private practice in Louisville, Kentucky and as a Professor of Medicine at the University of Colorado in Denver. I am interested not only in medicine, but also in computer programming, music, science fiction, fantasy, 30s pulp literature, and a whole lot more.


  1. Dr. Mann, you did a cath ablation for my WPW back in 2001 at CU. I wish I had more time to visit with you back then, because I had absolutely NO idea that you were

    1. a computer ‘nerd’ like me
    2. a sci-fi junkie like me

    And then here we are 12 years later, and I come to find out that you are working with John M, who’s blog I have been reading most intently after my Dad made the decision to have an AF ablation (John Day from Salt Lake is doing it I guess). Wow, what a small world! You moved to KY and I moved back to Wyoming.

    Needless to say, I will be checking back in here. Now I have TWO EP blogs to read.

    Hope all is well with you!

    PS. I grabbed you Android App just to satisfy the ‘nerd’ side in me. Neat stuff. Also, I remember after you did my ablation you gave me a printout from the mapping system you guys were using at CU. Was that an early incarnation of CARTO or something else? You might not remember this, but I think I made the remark as the sedation was being pushed that I was glad the system ran on SGI IRIX (at least that’s what I recall) and NOT WINNT 4.0, so I at least didn’t have to worry it would crash during the study! How funny eh?


  2. Justin, great to hear from you! I do remember you and your ablation. We were using the first CARTO system, which ran on SGI. Sadly, the current CARTO 3 system is a Windows system. John Mandrola mentioned that you had commented on his site that you knew me. Thanks for the kind words.

    My blog is more sporadic than John’s, with less medicine, more tech, and no cycling. Hope you continue to read it!


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