iPads can communicate with other iPads by Bluetooth, WIFI, or 3G (if available). Most collaborative apps connect to a cloud service that stores the information that is create on the device. For the apps that use Bluetooth communication, a maximum of four devices can be connected at one time. An example would be using Share board to connect three student devices and one device to a projector. Three groups would be able to annotate on the screen that is being projected. Some apps use text to collaborate. Twitter can be used as an audience response. Create a class account and students can tweet class responses and questions.


Icon
Title
Description
Cost
groupboard.jpg
Groupboard
Groupboard turns your iPhone, iPod Touch or iPad into a collaborative whiteboard, allowing you to draw and chat in real time with other people anywhere on the internet, even with users using a web browser. Use it for online tutoring, collaborative design, or just for fun!

Simple to use - simply start the app and then draw on the screen by dragging your finger. Use two fingers (pinch) to scroll and zoom. Click the Connect tab to connect with other people.

Features include the ability to change colors, shapes, line width, and upload photos which you can then draw on. Log in as administrator for the ability to ban users and delete pictures.

Use two fingers (pinch gesture) to zoom in or out and scroll.
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Cost is license dependent
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Springnote
Springnote is a note-taking app that is synchronizes with their web site. A free account is needed to use the app. Notes can accessed from their website http://springnote.com.
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springnote-screen.jpg
Free

Springpad
Key features of Springpad:
• Type in a note or thought so you don't forget it.
• Save a photo of things you want to look up later.
• Save nearby businesses and restaurants based on your current location
• Scan a bar code of any product, book or media to save for later.
• Search the web to add movies, wines, books and more. Springpad automatically adds useful information like addresses, prices and descriptions.
• Access all of your saved data online and offline.
• Quickly access useful information like your shopping lists, recipes and restaurants.
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whiteboardhd.jpg
Whiteboard VGA Out
Whiteboard is a collaborative drawing app for the iPhone, iPod touch, and iPad. Experience better doodling with Whiteboard's smooth, fluid markers.

Whiteboard offers real-time collaborative picture creation. Connect with any iPad, iPhone, or iPod touch over Wi-Fi or Bluetooth peer-to-peer, and discover what happens when the fingers of two minds work together.
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$3.99

Tweetdeck
Tweetdeck allows you to effortlessly read and compose tweets, search Twitter.com, filter message types and much more.
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Free
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Twitterific
Twitterific allows you to effortlessly read and compose tweets, search Twitter.com, filter message types and much more.
twitterific-screen.jpg
Free
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Share Board
Share Board allows up to 4 users to connect simultaneously via Bluetooth or Wi-Fi to create, innovate, draw, share pictures, play games or just have fun—and Share Board is inter-compatible with the iPhone, iPod Touch and iPad.
Share Board includes multiple drawing tools (Pen, Marker, Highligher), editing and scaling features, session save and log, the ability to upload and edit photos and text and features to share any session via email or Facebook. Assign session names and icons. Even connect your iPad to a projector to display your work for presentations.
Use Share Board to share thoughts and ideas during meetings, conferences or tradeshows. Upload pictures, add texts and share them on Facebook.
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$3.99
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SyncPad
Video demo: http://vimeo.com/20762040 - SyncPad is the ultimate whiteboard for remote and local collaboration. Would you like to share your ideas with a coworker but you are out of town? Don't worry, just create a room with your SyncPad and share the name of the room with your co-worker, who can enter in his SyncPad or simply use any browser, visiting http://mysyncpad.com/roomname.

Forget those whiteboard and sketchpad applications that require you to be few feet from each other in order to collaborate. With SyncPad you just need to be connected to the internet, and you will be able to enjoy a live connection experience, just like if you were working the very same whiteboard, no matter where you are. If you want to clear your whiteboard, just tap on the screen 3 times to clear imported images and 4 to clear the entire board.

Features:
- Multiple colors
- Multiple stroke sizes
- Eraser
- Multi-page PDF support
- Import pictures from your library
- Live sharing connection with another SyncPad, SyncPad reader or a browser.
- Multi-user rooms
- Share via e-mail or save to your library
$9.99