Basically I’ll get like 10-15 coins for one word added as known. I’ve reached like 600 coins for the 10 minutes I’ve been on today. Also I’m not sure if goal multiplies the coins after 1x. As in, if I reach 2x on my daily goal, do my coins get multiplied 2x for each word? I’m using the web version.
Your coins just get multiplied for the word score. As you are a beginner in your target languages you will encounter a lot of blue high frequency words that have a high score. This explains why you get so many coins.
My observation is that it’s easier for beginners and learner of popular languages (Spanish, French and German) to score a lot of coins.