Occasionally people ask about “must-have” apps for their devices. My preference is to focus on apps that ease the burden of communication, collaboration, and playing with ideas. These iOS applications are agnostic of content area and well worth the minimal costs. I suspect many are also available for other platforms, but I'll leave that to you.
Explain Everything ($3.49) gives the user a Khan-Academy-Like work space with the ability to record and share their voice and what’s on the screen. It’s like putting an interactive whiteboard in everyone’s hands.
GoodReader ($5.97) is my favourite reader app. It handles a lot of different file types, connects with several cloud storage services, and lets you create and share annotations with a pretty robust tool set. You can store files locally for off-line access.
Voice Dream ($11.99) speaks the contents of text files. Like GoodReader, it handles a lot of different file types and plays nicely with many cloud storage services.It remembers where you left off, has adjustable pitch and speed controls,handles challenging document including headers and multiple column formats. Tables, though, are a little wild to listen to. Other voices are available as In-app purchases for $3.49 each.
Dragon Dictation (Free) is a great way to get ideas from kid’s heads onto the (virtual) page. Voice recognition is much more accurate now than it was in the past and this app is very handy. The active listening time is limited so longer passages or thoughts might take a few starts/stops, but I’ve found it to be very accurate and easy to work with.
Coach’s Eye ($5.79) lets the user annotate video files with lines and shapes. There are a couple of in-app purchases that also let you place multiple timers and a protractor to measure angles. With slow-motion, shuttling, and live narration, it’s a great tool for science… and sport too. It’s a little pricey, but makes replays, slow motion, and onscreen annotations extremely easy.
Google Translate, formerly Word Lens (Free) provides through-the-lens instant translation of text to the selected language. Still a little choppy, and not great for small text, but a very cool app for language learning. Each language pack used to come as in-app purchases but since the app was purchased by Google, all the language packs are now free.