Excluded apps
Excluded apps is a list in Speechy's Settings on your Mac. Speechy never reads text, names or pictures from the apps on it, so dictation there uses only your own words and your Dictionary. Add an app with Choose app, or press Exclude this app after dictating in it.
How to use Excluded apps
Open Context settings
Settings, Personalize, Excluded apps.
Choose an app
Pick any app on your Mac.
Dictate there as usual
Only your words and your Dictionary are used.
What you do, what you get
Settings, Personalize
You do
“Choose app, then Messages”
You get
Speechy never reads your chats in Messages for spelling hints
Settings, Personalize
You do
“Press Exclude this app under Names used in your last dictation”
You get
The app you just dictated in is added to the list
Questions
Yes. Speechy just doesn't use anything from that app's window. Your vocabulary and replacements still apply.
Text near your cursor, names in the window, pictures of the screen and project file names.
Press Remove next to it in Settings, Personalize.