Is lingots useless?
I know, lingots you can spend in the store but I do not know if the items in the store are even necessary. What do you guys think.
You can earn that many lingots fairly easily if you maintain your streak. I am at 6795 lingots and suspect that a fair number of other long-time users have more than I do.
Once you have bought timed practice and any bonus courses available in your target language, they are mostly good for buying the occasional streak freeze. You can also give them to people, if you are so inclined. I have never heard that they can be exchanged for any amount of real money.