You can already get a graphing calculator on your phone today. Desmos is interesting but their business model isn't going to fix the costs of anything, as many

You can already get a graphing calculator on your phone today. Desmos is interesting but their business model isn't going to fix the costs of anything, as many commenters have noted. At best, Desmos is pushing the costs from students to the book-buying taxpayers. Schools can solve that problem more simply by just buying the caclulators themselves. A TI-89 calculator last for 20 years, $5/yr/student, no big deal, despite costing more than it should.