Spectacular Challenge! – Nonagon Pro - Mathematical brain training Review

I'd certainly change my rating if there was a way in the settings to control which operations could be used. Or at least input a limit on the "Target Number." I'm a teacher and would love to use this in my classroom but feel my students would be overwhelmed and would quit when the Target Number gets higher so quickly.
Review by Beardease on Nonagon Pro - Mathematical brain training.