After you have started all of your sales, go to settings, general, date and time, and change the date to the next day. Then go back to Tiny Tower and collect your restocks, but make sure that no building are stocking (or else you will have to start all over) then go and change the date back! There you go, Enjoy!
Figure out a blitzens birthday. Then go to settings, general, time and then type their b-day date. Go back to tiny tower and it will say you got another tower buck. Keep on doing this for more.
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