Manage ToDo lists in voice

[Harshana]

Hi all,

I just want to know whether there are any equipment made to manage
todo lists in voice.

eg: in palms we can maintain a todo list, but I want a more practical
one.

when I remember something I want to press a button and record an voice
entry, later I should be able to play the whole list and delete any
specific ones.

If anyone know any models of this kind of gadgets, please let me know


Regards,
Harshana