ok now I'm ticked – Calculator X Free - Advanced Scientific Calculator with Formula Display & Notable Tape Review

I had tried Crystal Calc and it didn't work. Then I tried this free version-- and it worked -- but it had ads. It came up with a popup asking if I wanted to upgrade to the version without ads. It verfied my request but it has done NOTHING to take away the ads. This developer is sloppy and doesn't check his/ her work. I hope no one else gives this dev their hard earned money. Run don't walk away from this app and the sloppy developer who takes your money for giving you junk.
Review by The Celestial Dragon on Calculator X Free - Advanced Scientific Calculator with Formula Display & Notable Tape.