We know, we know, it’s been a few weeks with no new calculator updates! We’ve been busy working on some new upcoming projects. Today’s Monday update consists of the following new calculators: Retail Calculators, Mark Down Calculator, Mark Up Calculator, and Sales Tax Calculator. If these don’t tickle your fancy, we’ve got another new update coming later this week. Additionally, we’ve made some category changes to help with recent navigation issues. We’ve split up Math and Science into two separate categories: Math Calculators and Science Calculators. We’ve also added three new Math sub-categories: Algebra Calculators, Geometry Calculators, and Statistics Calculators. Enjoy!