chess today is delivered in pdf/pgn format (cbv is available too, which obviously doesn't help you). I don't think there's anything else available.
Chess magazines on iPad?
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Wow, it's $60 per year! (45 Euros). 
I was thinking of something like $15 to $20 per year.
You can get BCM (British Chess Magazine) through Amazon, for your kindle. reads nicely in the iPad kindle app.
Does anyone publish a chess magazine for the iPad?
Thanks! :)
-- Boris