Translation:Ritheann siad mar rithimid.
Is there a difference in emphasis between 'rithimid' and 'ritheann muid' or are they completely interchangeable? I am thinking of the distinction between 'corremos' and 'nosotros corremos' in Spanish where the inclusion of the pronoun can be used to emphasize that it is we who are running.
They're not completely interchangeable. It depends on the dialect. If you want to speak Connacht or Ulster, you'll consistently use ritheann muid. If you want to speak Munster, you'll use rithimid.
How do I learn when to use iad versus siad for they? People mention tips for some things, but I don't see how to get to them via the android app.
From what I have read you can only get the tips when on PC but it doesn't tell you when to use each one anyway.