A pair of iPhone app from Omar Rabbolini, an Italian application developer currently resides in UK.
These pair of iPhone apps: CantoNotes and Hanzi Lookup, will help Cantonese speaking users not familiar with writing Chinese; like myself, learn to write Chinese characters.
CantoNotes will allow users to enter Chinese characters using the LSHK (Linguistic Society of Hong Kong) JyutPing standard phonemes input method and CantoNotes will respond with the corresponding Chinese character. Characters displayed can be copy and paste into the built in Hanzi Lookup screen. Rather than using the built in copy & paste feature of iPhone OS, the app use its own Copy and Paste buttons. Although the iPhone OS built in copy & paste feature also works. After pasting the desired Chinese characters into the Hanzi Lookup screen, it will display the Chinese character in a medium size font, along with the Cantonese pronunciation beneath it one character at a time.