While Apple had previously released iPad-compatible versions of its iWork apps—Pages, Keynote, and Numbers—to the iPad, the company today announced the availability of these apps on the smaller iOS devices, the iPhone and iPod touch. Interesting.

Apple today announced that its groundbreaking iWork productivity apps, Keynote, Pages and Numbers, are now available for iPhone and iPod touch, as well as iPad. Created for the Mac and then completely redesigned for iOS and Apple’s revolutionary Multi-Touch interface, Keynote, Pages and Numbers allow you to create and share stunning presentations, beautifully formatted documents and powerful spreadsheets on the go. iWork apps are available on the App Store for $9.99 each to new users and as a free update for existing iWork for iPad customers.

“Now you can use Keynote, Pages and Numbers on iPhone and iPod touch to create amazing presentations, documents and spreadsheets right in the palm of your hand,” said Philip Schiller, Apple’s senior vice president of Worldwide Product Marketing. “The incredible Retina display, revolutionary Multi-Touch interface and our powerful software make it easy to create, edit, organize and share all of your documents from iPhone 4 or iPod touch.”

Keynote, Pages and Numbers import and export documents from iWork for Mac and Microsoft Office; print wirelessly using AirPrint; and include beautiful Apple-designed themes and templates. All iWork apps now include improved document management with thumbnail images that let you find your files quickly, organize them and group them into folders using intuitive gestures. From the Tools button in the toolbar, you can easily share any presentation, document or spreadsheet without leaving the app.

Keynote makes it easy to create impressive presentations, complete with animated charts and transitions. You can play your presentation in Full Screen view on the stunning, high-resolution Retina™ display or connect to a projector or HDTV for a large audience. Available separately, the Keynote Remote app allows your iPhone or iPod touch to control a Keynote presentation on any iOS device or Mac.

Pages is the most beautiful word processor ever designed for a mobile device and has everything you need to create amazing documents. Pages takes full advantage of the high-resolution Retina display on iPhone 4 and iPod touch so you can see all the detail and richness of your documents. To make working with text easy on iPhone and iPod touch, Smart Zoom automatically zooms in to follow the cursor while you’re editing and zooms back out when you’re done.

Numbers uses Multi-Touch gestures and an intelligent keyboard to help you create compelling, great-looking spreadsheets with over 250 easy-to-use functions, flexible tables and eye-catching charts. Just like Pages, Numbers takes advantage of the high-resolution Retina display and Smart Zoom to make working with text and cells on iPhone 4 or iPod touch easy.

The apps are $9.99 each, which is super expensive, frankly, given the tiny screens on these devices, but for those who previously purchased them for the iPad, they are free.