A variety of calculators for student use.
Paid iPad app: https://itunes.apple.com/us/app/scientific-graphing-calculator/id369480853?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/scientific-graphing-calculator/id369480853?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.visionobjects.calculator
Free iPhone app: https://itunes.apple.com/en/app/myscript-calculator/id578979413?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/en/app/myscript-calculator/id578979413?mt=8&uo=4&at=10l6SU
Paid iPad app: http://itunes.apple.com/us/app/pi-cubed/id311433261?mt=8&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/us/app/pi-cubed/id311433261?mt=8&uo=4&at=10l6SU
Paid iPhone app: http://itunes.apple.com/us/app/pi-cubed/id311433261?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/app/ti-nspire/id590823242?mt=8&uo=4&at=10l6SU
Paid Windows program: http://education.ti.com/en/us/products/computer_software/ti-smartview-software/ti-smartview-emulator-software-for-the-ti-84-plus-family/features/features-summary
Paid Mac program: http://education.ti.com/en/us/products/computer_software/ti-smartview-software/ti-smartview-emulator-software-for-the-ti-84-plus-family/features/features-summary