Features:

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 |  | Freehand sketching with user adjustable smoothing and filtering

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 |  | A variety of pen widths and shapes, including ones for Caligraphy

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 |  | Sketching of lines, circles, rectangles, ovals, and other shapes

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 |  | Nine different fill patterns (from white to black) that can be applied to freehand sketching, as well as lines and shapes

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 |  | Insertion of text (4 different fonts) into sketches

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 |  | Titlebar can be hidden for more sketching area

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 |  | A hardware button can be assigned to quickly create new sketches. Optionally, it can be assigned to launch another application, which allows you to "share" a hardware button between DiddleBug and another app

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 |  | Alarms can be viewed and set either as an absolute time (Tomorrow, 8:15pm), or as a running countdown

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 |  | Can have multiple alarms at once (one per sketch), which will persist even across a soft reset

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 |  | Alarms can be snoozed after display to allow you to postpone dealing with it

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 |  | Sketch reminders can be locked to prevent accidental deletion or overwrite

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 |  | IntelliBoogerTM extensions allow you to create entries for the built-in apps directly from within DiddleBug

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 |  | Beaming

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 |  | Linking to DiddleBug sketches using Linker

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 |  | Sketches can be grouped into categories

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 |  | Sketches can be named and set to "Private" status

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 |  | Text notes can be attached to sketches

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 |  | PalmOS-standard list view to get a quick overview of all the sketches in a category

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 |  | Two different thumbnail views

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 |  | A flood fill tool

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