Yes a mobile wallet is necessary for purchases but no merchants currently accept ix so this is not the true issue here. If there were merchants someone would likely release a mobile wallet in particular since ix is quite similar to btc.

sms transactions ?  how do you propose to send cryptocurrency and maintain security from conventional text messaging that is limited to 160 charachters

if you want a mac wallet , build it, install qt creator and the other dependencies and it will compile---
distribution requires an apple developers license (and a few other skills), could just as easily build linux wallet on your mac using virtual box -- also someone in the community could certainly 'compile' and distribute a mac wallet if they wanted to support the coin -- they should do so without compensation and anyone using it should take the precautions they should take with using any wallet compiled by anyone for any coin.

the premine may be an issue to some people. possibly the only valid concern here----


personally i find it distasteful when coins are premined.
If you examine the early premined blocks carefully you will find them (i have not examined them all)
unredeemed  at output....meaning they are sitting in the blockchain waiting to be claimed by the owner.... ironic the same method used by 'satoshi' to keep a hoard of btc
if the premine was done with the intent of short term financial reward i think whoever controls it would have cashed it long long ago when ix was trading for much higher btc/ix ratio than now.
for this reason i see no purpose to consider the premine of ix an issue at all.
ix was created so long ago and the original developer 'thomas' is no longer active.....
if you want to use ix you either have to live with this premine or move to some other cryptocurrency without one