This is my list of favorite iOS apps for teaching.
Free Android Phone app: https://play.google.com/store/apps/details?id=com.masteryconnect.CommonCore
Free iPad app: https://itunes.apple.com/us/app/common-core-standards/id439424555?mt=8&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/common-core-standards/id439424555?mt=8&at=10l6SU
Free Android Tablet app: https://play.google.com/store/apps/details?id=com.masteryconnect.CommonCore
Paid iPad app: http://itunes.apple.com/us/app/popplet/id374151636?mt=8&uo=4&at=10l6SU
Paid iPhone app: http://itunes.apple.com/us/app/popplet/id374151636?mt=8&uo=4&at=10l6SU
Website: http://popplet.com/
Free iPad app: https://itunes.apple.com/us/app/kidspiration-maps-lite/id675831529?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/kidspiration-maps/id675321195?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/app/word-mover/id572997152?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/trading-cards/id555742821?mt=8&uo=4&at=10l6SU
Website: http://www.nearpod.com/web
Free iPad app: http://itunes.apple.com/us/app/nearpod/id523540409?ls=1&mt=8&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/us/app/nearpod/id523540409?ls=1&mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.panareadigital.Nearpod
Free iPad app: https://itunes.apple.com/us/app/id412443803?mt=8&at=10l6SU
Paid Windows program: https://doceri.com/win_doceri.php
Paid Mac program: https://doceri.com/download_form.php
Free iPhone app: https://itunes.apple.com/us/app/qrafter-qr-code-barcode-reader/id416098700?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/qrafter-qr-code-barcode-reader/id416098700?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/qrafter-pro-qr-code-barcode/id468610525?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/qrafter-pro-qr-code-barcode/id468610525?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/haiku-deck/id536328724?mt=8&uo=4&at=10l6SU
Website: http://www.haikudeck.com/
Free iPhone app: https://itunes.apple.com/us/app/apps-gone-free-best-daily/id470693788?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/apps-gone-free-best-daily/id470693788?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/ca/app/virtual-manipulatives!/id471341079?mt=8&uo=4&at=10l6SU
Website: http://www.classdojo.com/
Free iPad app: http://itunes.apple.com/us/app/classdojo/id552602056?ls=1&mt=8&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/us/app/classdojo/id552602056?ls=1&mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.classdojo.android
Google Chrome app: https://chrome.google.com/webstore/detail/pbinoojbbajacmkigmfnkclhgjnglpon
Free iPad app: https://itunes.apple.com/us/app/tellagami/id572737805?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/tellagami/id572737805?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/ask3/id572042047?mt=8&uo=4&at=10l6SU
Website: http://www.khanacademy.org/
Free iPad app: https://itunes.apple.com/us/app/id469863705?mt=8&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/id469863705?mt=8&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=org.khanacademy.android
Free Android Tablet app: https://play.google.com/store/apps/details?id=org.khanacademy.android
Edmodo app: https://spotlight.edmodo.com/product/khan-academy,324527/
Paid iPhone app: https://itunes.apple.com/us/app/puppet-pals-2-all-access/id557616416?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/puppet-pals-2-all-access/id557616416?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/puppet-pals-2-free/id589141096?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/puppet-pals-2-free/id589141096?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/shadow-puppet/id700902833?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/shadow-puppet/id700902833?mt=8&uo=4&at=10l6SU
Free Mac program: https://itunes.apple.com/us/app/explain-everything-player/id548333668?mt=12&uo=4&at=10l6SU
Free iPad app: http://itunes.apple.com/us/app/toontastic/id404693282?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/toontastic-all-access/id563403725?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/toontastic-jr.-pirates-for/id579933458?mt=8&uo=4&at=10l6SU
Website: https://www.remind.com/
Free iPad app: http://itunes.apple.com/us/app/remind/id522826277?mt=8&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/us/app/remind/id522826277?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.remind101
Google Chrome app: https://chrome.google.com/webstore/detail/jppddpkfhdojffabldnpdacpeoefcljp
Free Android Tablet app: https://play.google.com/store/apps/details?id=com.remind101
Paid iPhone app: https://itunes.apple.com/us/app/puffin-web-browser/id406239138?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/puffin-web-browser/id406239138?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.cloudmosa.puffinFree
Paid Android Phone app: https://play.google.com/store/apps/details?id=com.cloudmosa.puffin
Free iPhone app: https://itunes.apple.com/us/app/puffin-web-browser-free/id472937654?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/puffin-web-browser-free/id472937654?mt=8&uo=4&at=10l6SU
Free Android Tablet app: https://play.google.com/store/apps/details?id=com.cloudmosa.puffinFree
Paid Android Tablet app: https://play.google.com/store/apps/details?id=com.cloudmosa.puffin
Free iPad app: https://itunes.apple.com/us/app/chatterpix-kids-by-duck-duck/id734046126?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/chatterpix-kids-by-duck-duck/id734046126?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/quickoffice/id578386521?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/quickoffice/id578386521?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.quickoffice.android
Free Android Phone app: https://play.google.com/store/apps/details?id=com.fusionprojects.edmodo
Free iPad app: http://itunes.apple.com/us/app/edmodo/id378352300?mt=8&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/us/app/edmodo/id378352300?mt=8&uo=4&at=10l6SU
Website: http://www.edmodo.com/
Google Chrome app: https://chrome.google.com/webstore/detail/edmodo/fpcdidgjjebefhmlhjlgnkahlimgaemc
Free iPad app: https://itunes.apple.com/us/app/ibooks/id364709193?mt=8&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/ibooks/id364709193?mt=8&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/book-creator-for-ipad-create/id442378070?mt=8&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/book-creator-free-make-books/id661166101?mt=8&at=10l6SU
Google Chrome app: https://app.bookcreator.com/sign-in
Website: https://bookcreator.com/
Free Windows program: https://app.bookcreator.com/sign-in
Free Mac program: https://app.bookcreator.com/sign-in
Free iPad app: http://itunes.apple.com/us/app/itunes-u/id490217893?ls=1&mt=8&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/us/app/itunes-u/id490217893?ls=1&mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/loopster/id609747930?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/loopster/id609747930?mt=8&uo=4&at=10l6SU
Facebook app: https://apps.facebook.com/loopstervideos
Website: http://www.loopster.com/
Paid iPad app: https://itunes.apple.com/us/app/word-wizard-talking-movable/id447312716?ls=1&mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/word-wizard-talking-movable/id447312716?ls=1&mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/app/paper-by-fiftythree/id506003812?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/penultimate/id354098826?mt=8&uo=4&at=10l6SU
Website: http://feedly.com/
Free Android Phone app: https://play.google.com/store/apps/details?id=com.devhd.feedly
Free iPhone app: https://itunes.apple.com/us/app/feedly-your-google-reader/id396069556?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/feedly-your-google-reader/id396069556?mt=8&uo=4&at=10l6SU
Google Chrome app: https://chrome.google.com/webstore/detail/feedly/ndhinffkekpekljifjkkkkkhopnjodja
Mozilla Firefox extension: https://addons.mozilla.org/en-us/firefox/addon/feedly/
Website: http://ed.ted.com/
Website: http://www.ted.com/
Free iPad app: https://itunes.apple.com/us/app/ted/id376183339?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/ted/id376183339?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.ted.android
Free iPad app: https://itunes.apple.com/gb/app/too-noisy/id499844023?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/too-noisy-pro/id521646496?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/gb/app/too-noisy/id499844023?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/too-noisy-pro/id521646496?mt=8&uo=4&at=10l6SU
Website: https://www.box.com/
Free iPad app: https://itunes.apple.com/us/app/box-for-iphone-and-ipad/id290853822?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/box-for-iphone-and-ipad/id290853822?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.box.android
Google Apps for Education app: https://www.google.com/enterprise/marketplace/viewListing?productListingId=3543+4657829137571541331
Free Windows program: http://apps.microsoft.com/windows/en-us/app/box/5183c685-a8ee-4b9e-b716-9509ebde9a52
Google Chrome app: https://chrome.google.com/webstore/detail/box-5-gb-free-storage/ejnkaeblpdcamcioiiabclakabcbjmbl
Paid Mac program: https://itunes.apple.com/us/app/imovie/id408981434?mt=12&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/imovie/id377298193?mt=8&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/imovie/id377298193?mt=8&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.evernote
Google Chrome app: https://chrome.google.com/webstore/detail/pioclpoplcdbaefihamjohnefbikjilc
Mozilla Firefox extension: https://addons.mozilla.org/en-US/firefox/addon/evernote-web-clipper/
Free iPad app: http://itunes.apple.com/us/app/evernote/id281796108?mt=8&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/us/app/evernote/id281796108?mt=8&uo=4&at=10l6SU
Free Mac program: http://itunes.apple.com/us/app/evernote/id406056744?mt=12&uo=4&at=10l6SU
Apple Safari extension: http://evernote.com/download/get.php?file=SafariExtension
Free Windows program: http://evernote.com/download/get.php?file=Win
Website: http://www.evernote.com/
Free Android Phone app: https://market.android.com/details?id=com.evernote.skitch
Free iPad app: http://itunes.apple.com/app/skitch-for-ipad/id490505997?mt=8&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/app/skitch-for-ipad/id490505997?mt=8&uo=4&at=10l6SU
Free Mac program: http://itunes.apple.com/app/skitch/id425955336?mt=12&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/baiboard-collaborative-whiteboard/id490534358?mt=8&at=10l6SU
Free Mac program: https://itunes.apple.com/us/app/baiboard-collaborative-whiteboard/id482322064?mt=12&at=10l6SU
Free iPad app: https://itunes.apple.com/app/docscan-hd-document-scanner/id467016332?mt=8&uo=4&at=10l6SU
Website: http://pixlr.com/express/
Free iPad app: https://itunes.apple.com/app/pixlr-express-plus/id526783584?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/app/pixlr-express-plus/id526783584?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.pixlr.express
Free iPad app: https://itunes.apple.com/us/app/pic-collage/id448639966?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/pic-collage/id448639966?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.cardinalblue.piccollage.google
Free iPad app: https://itunes.apple.com/us/app/educreations-interactive-whiteboard/id478617061?mt=8&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/stick-around-by-tony-vincent/id557949353?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/write-about-this-free/id601382666?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/write-about-this/id601375313?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/news-o-matic-daily-reading/id578023255?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/news-o-matic-daily-reading/id578023255?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/google-earth/id293622097?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/google-earth/id293622097?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.google.earth
Free Mac program: http://www.google.com/earth/download/
Free Windows program: http://www.google.com/earth/download/
Google Chrome app: http://www.google.com/earth/explore/products/plugin.html
Mozilla Firefox extension: http://www.google.com/earth/explore/products/plugin.html
Apple Safari extension: http://www.google.com/earth/explore/products/plugin.html
Free iPad app: https://itunes.apple.com/us/app/little-speller-three-letter/id434789689?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/little-speller-three-letter/id434789689?mt=8&uo=4&at=10l6SU
Free iPad app: http://itunes.apple.com/us/app/puppet-pals-hd/id342076546?mt=8&uo=4&at=10l6SU
Website: http://www.spellingcity.com/
Edmodo app: http://www.edmodo.com/publisher/vocabularyspellingcity
Free iPhone app: https://itunes.apple.com/us/app/spellingcity/id538407602?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/spellingcity/id538407602?mt=8&uo=4&at=10l6SU
Website: http://www.ixl.com/
Free Android Phone app: https://play.google.com/store/apps/details?id=com.socrative.student
Free iPad app: https://itunes.apple.com/app/student-clicker-socrative/id477618130?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/app/student-clicker-socrative/id477618130?mt=8&uo=4&at=10l6SU
Website: http://www.socrative.com/
Edmodo app: http://www.edmodo.com/publisher/socrative
Google Chrome app: https://chrome.google.com/webstore/detail/socrative-student/nblhpecglllndfihipmpdoikimcmgkha
Free iPad app: https://itunes.apple.com/us/app/vittle-free-interactive-whiteboard/id637822848?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/lego-movie-maker/id516001587?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/lego-movie-maker/id516001587?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/scanner-pro-by-readdle/id333710667?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/scanner-pro-by-readdle/id333710667?mt=8&uo=4&at=10l6SU