RuSwitcher
Fixes what you typed in the wrong layout
A keyboard layout switcher for macOS. One key fixes text typed in the wrong layout, and it retypes the text instead of copying and pasting it.
Three reasons people install it
Nothing else needs configuring: grant keyboard access after install and you are done.
One key fixes it
No selecting: tap Option to fix the last word, tap again to put it back. A selection gets fixed the same way.
Or it fixes itself
Optionally it corrects as you type, but only when it is certain, and when in doubt it stays quiet and waits for the hotkey. Off by default.
Your clipboard stays yours
Corrected text is retyped character by character, no clipboard needed. In a few odd fields like Spotlight it is used and restored right away.
Your alphabet, not just Russian
The example above uses your system's script. Pick another language and the key gets re-engraved while the example types itself again.
An app with keyboard access owes you an explanation
So here it is, short and checkable.
Contact and support
A question, a bug or an idea: write wherever suits you. The developer reads and replies.