Apps compability with android ann ubuntu desktop on ubuntu phone os

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http://askubuntu.com – This question might have beed asked here before but anyway. As far as i understand Ubuntu OS apps will be able to run desktop programs, but is wont run android apps which existing atm. Is that correct? If it is i think its a big mistake. Android market have already tons of useful apps aimed for mobile phones. If Ubuntu OS wont support them, well not many users will switch to ubuntu OS. How about some kind of emulator for android apps? When android was new in market there was very few navigation apps, and it took quite long time to finnaly get good navigation on android. That was one o (HowTos)