Lingot vs gem?

On the Duolingo website, I have only lingots. On the app, I have only gems. I know their different because I have more gems, the prices are different, and I can buy slightly different things. Can anybody drop some clarity on this and why is it like that?

February 13, 2017


(Don't Quote me on this) I'm not exactly sure, but i believe it has something to do with an A/B update on the app, I'll edit in some links if i find some that will (Hopefully) explain.

February 13, 2017

I sometimes do duolingo on a tablet. I had lingots, not gems.

February 21, 2017

me to, so what is happening? I did it on the phone two days ago and there were still lingots.

February 27, 2017
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