This list of apps is related to the Standards of Mathematical Practices for Middle School grade levels.
Paid iPad app: https://itunes.apple.com/us/app/pattern-blocks-by-brainingcamp/id485065679?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/geoboard-by-math-learning/id519896952?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/geoboard-by-math-learning/id519896952?mt=8&uo=4&at=10l6SU
Website: http://www.mathlearningcenter.org/web-apps/geoboard/
Google Chrome app: https://chrome.google.com/webstore/detail/geoboard-by-the-math-lear/gaakmmdiopnmcenkojohldanladpajak
Paid iPad app: https://itunes.apple.com/us/app/maths-toolbox/id599614966?mt=8&uo=4&at=10l6SU
Paid iPad app: http://itunes.apple.com/in/app/graphs-by-tap-to-learn/id415598605?mt=8&uo=4&at=10l6SU
Paid iPhone app: http://itunes.apple.com/in/app/graphs-by-tap-to-learn/id415598605?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/4-dice-fraction-games/id583546023?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/4-dice-fraction-games/id583546023?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/5-dice-order-operations-game/id572774867?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/5-dice-order-operations-game/id572774867?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/quick-math-arithmetic-times/id537802071?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/quick-math-arithmetic-times/id537802071?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/magicplan-csi/id480247904?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/magicplan-csi/id480247904?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
Free iPad app: https://itunes.apple.com/us/app/brainpop-featured-movie/id364894352?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/brainpop-featured-movie/id364894352?mt=8&uo=4&at=10l6SU
Paid Android Phone app: https://play.google.com/store/apps/details?id=com.wewanttoknow.DragonBoxPlus
Paid iPad app: https://itunes.apple.com/us/app/dragonbox-algebra-5+/id522069155?mt=8&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/dragonbox-algebra-5+/id522069155?mt=8&at=10l6SU
Paid Mac program: https://itunes.apple.com/us/app/dragonbox-algebra-5+/id524967552?mt=12&at=10l6SU
Website: http://www.explorelearning.com/
Free iPad app: https://itunes.apple.com/ca/app/virtual-manipulatives!/id471341079?mt=8&uo=4&at=10l6SU
Paid iPad app: http://itunes.apple.com/us/app/math-games-math-vs-zombies/id470896560?ls=1&mt=8&uo=4&at=10l6SU
Paid iPhone app: http://itunes.apple.com/us/app/math-games-math-vs-zombies/id470896560?ls=1&mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/buzzmath-middle-school/id593186620?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/matchmatics-lite-matchstick/id564348049?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/matchmatics-lite-matchstick/id564348049?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/matchmatics-matchstick-math/id544505866?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/matchmatics-matchstick-math/id544505866?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/3d-geometry/id555596048?mt=8&uo=4&at=10l6SU
Paid Mac program: https://itunes.apple.com/us/app/3d-geometry/id558182993?mt=12&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/the-ruler/id367353754?mt=8&uo=4&at=10l6SU
Website: http://www.reflexmath.com/
Paid iPad app: http://itunes.apple.com/us/app/factor-samurai/id441919897?mt=8&uo=4&at=10l6SU
Paid iPhone app: http://itunes.apple.com/us/app/factor-samurai/id441919897?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/math-with-your-friends-game/id1159371308?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/math-with-your-friends-game/id1159371308?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.mathwithyourfriends
Free Android Tablet app: https://play.google.com/store/apps/details?id=com.mathwithyourfriends
Free Android Phone app: https://play.google.com/store/apps/details?id=com.brainpop.brainpopfeaturedmovieandroid
Google Apps for Education app: https://www.google.com/enterprise/marketplace/viewListing?productListingId=8006+9291735389906767602
Free iPad app: http://itunes.apple.com/us/app/brainpop-featured-movie/id364894352?mt=8&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/us/app/brainpop-featured-movie/id364894352?mt=8&uo=4&at=10l6SU
Website: http://www.brainpop.com/
Google Chrome app: https://chrome.google.com/webstore/detail/brainpop-featured-movie/cdikkckjinnmjpgkjjpnfmmbcpbhmklf
Free Android Phone app: https://play.google.com/store/apps/details?id=mathterms.com.andyfelong
Free iPad app: https://itunes.apple.com/us/app/itooch-middle-school-math/id521676063?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/itooch-middle-school-math/id521676063?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/numbler-free/id617010732?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/numbler-math-game/id569515022?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/numbler-free/id617010732?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/numbler-math-game/id569515022?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/dragonbox-algebra-12+-award/id634444186?mt=8&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/dragonbox-algebra-12+-award/id634444186?mt=8&at=10l6SU
Paid Mac program: https://itunes.apple.com/us/app/dragonbox-algebra-12+-award/id813681744?mt=12&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/isosceles-geometry-sketchpad/id554492532?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/isosceles-geometry-sketchpad/id554492532?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/isosceles+-geometry-sketchpad/id547654254?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/isosceles+-geometry-sketchpad/id547654254?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/mathspace/id586612052?mt=8&uo=4&at=10l6SU
Website: https://mathspace.com.au/
Paid iPhone app: https://itunes.apple.com/us/app/algebra-touch/id384354262?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/algebra-touch/id384354262?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/chicken-coop-fractions-game/id484561886?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/chicken-coop-fractions-game/id484561886?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/gizmos/id692838319?mt=8&uo=4&at=10l6SU