GoodNotes lets you take handwritten notes, sketch diagrams, mark-up PDFs and organize them on a beautiful bookshelf. Turn pages with a swipe, highlight or add notes to any page, and share your notes with anyone. GoodNotes will automatically save your notes and has full backup function to prevent data loss.

Good Note-taking Experience
- Built-in plain, ruled, graph and music papers
- Ten-color pen, five-color highlighter, eraser and lasso tool
- Insert text and images easily
- Shrink down your handwriting as you write using the close-up input

Good Viewing Experience
- Change pages by swiping left or right
- Adjust pages to fit the screen by zooming in or out
- Handwriting looks smooth and crisp even when zoomed in
- Overview of all pages using thumbnails

Good Sharing Ability
- Select the pages you wish to share
- Export to external apps (e.g. Dropbox, Evernote etc.)
- Choose whether to include backgrounds or notes in exports
- Share editable notebooks with other GoodNotes users

Good Importing Abilities
- Import documents from iTunes file sharing
- Import images from the photos library or from the iPad camera directly
- Import PDFs or images from other apps
- Built-in Dropbox file browser

Data Loss Prevention
- Backup all your notes by one tap
- Auto-saves every 15 seconds

Other Features
- Folder support
- Wi-Fi File Transfer
- AirPrint
- PDF table of contents support
- Insert PDF documents into existing notebooks
- Custom template
- External display support
- Bookmark
- Page view history

You can create up to 2 notebooks and 10 pages per notebook in the free version.

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The screenshots use material from Wikipedia articles Photoelectric effect[1] and Internal combustion engine[2], which are released under the Creative Commons Attribution-Share-Alike License 3.0[3].
[1] http://en.wikipedia.org/wiki/Photoelectric_effect
[2] http://en.wikipedia.org/wiki/Internal_combustion_engine
[3] http://creativecommons.org/licenses/by-sa/3.0/