Hi,

I just download free version to test first before buy Deluxe version but i don't find any option that support unicode.

I write vietnamese words using arial font but Allmynotes can't display correctly.

AllMyNotes is true Unicode application. Hard to tell why exactly Vietnamese text doesn't display correctly. First of all, please make sure to download the most recent app version, possibly the issue is related to older version and is already fixed. Let me know otherwise, also, would be great to have exact steps to reproduce the issue.