Hi Ron,

When your certificate expires, already installed apps on an iPad will continue to work, provided that they were bought from the iTunes sture. Any apps that you installed directly on your iPad, using XCode and a developers certificate, will stop working shortly after your Apple dev account expires.

A solution might be to make your app available on the iTunes store for free, install the app on all the devices you need it on, and let your account expire. If you decide to update your app e.g. three years later, you can renew your dev account and update the app.

If you plan to update your app every year or 18 months, it might be a good idea to contact a developer whose account isn't likely to expire ;-)

--
Best regards,

Mark Schonewille

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On 2/21/2013 17:16, Ronald Zellner wrote:
Hi,

I've been developing in Revolution/LiveCode in an academic setting since 1999. 
Most of my work uses regular stacks. I did try a few iPad applications a while 
back, but I have not renewed my certifications.  Recently I was asked to 
develop a research instrument for a project using iPads.  My concern is related 
to the long-term maintenance of such work; if I don't continue to keep my 
certification active will the research instruments be useless at some point?  
The instrument will involve data collection, manipulation, and storage.  This 
is all quite manageable with a stack on a laptop, but I'm not sure how I want 
to proceed in relation to using iPads.  I also have concerns about where to 
store the data (local or server) and how to access it.  Any general thoughts or 
advice?
Thanks,
Ron
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