How I "donated" $9.99 to Duolingo:
I've read several comments saying that people would donate money to Duolingo if there was a donate button.
Here's how I "donated" $9.99 to Duolingo:
I subscribed to Duolingo Plus on my Android phone, which means I signed up for a $9.99 monthly subscription. Before the month ended, I cancelled the auto renewal for Duolingo Plus. I didn't get Duolingo Plus for any of its features. I solely wanted to give Duolingo money because its helped me soo much on my language learning journey.
Maybe in the future I will subscribe to Duolingo Plus again to financially contribute to the sustainability of this platform, but I did what I could at the moment.
Update: I used this article to cancel my monthly subscription with Duolingo Plus on my Android phone: https://support-splashtoppersonal.splashtop.com/hc/en-us/articles/230005227-How-do-I-unsubscribe-from-an-auto-renewing-subscription-on-Android-devices-Tablet-Handset-
I don't get a Duolingo Plus option anymore :P. I actually wanted to buy it too a few days ago but noticed the Duolingo Plus option had disappeared. I won't buy it monthly since it's simply too expensive for what I deem Duolingo's worth, but rather like trimestrial. I'm either in an a/b test or the subscription option is hidden when you frequently tap the ads (lately I've tapped them often - before switching back to web), which might have made them more money than "plus" would have.
I've stopped using the mobile app 3 days ago, switching back to web, thus I wouldn't get anything out of buying it, but it's only fair to pay Duolingo a bit too after I've paid for an other service (which I hadn't even used for months after buying premium - but had received a nice discount for).
Anyway it's kinda odd that past months, literally every single month my ads related options have changed: bought the no ads feature for 3€, the next month it asked for 11€, the next month it becomes Duolingo Plus, next month (now) Duolingo Plus has vanished xD. Not even to mention the changes with ads themselves...
I wonder what ads and ads related options for me will be like next month xD.
P.S. Why I won't pay Duolingo retroactively for past "services"? Because Duolingo being free to use was one of the prime reasons I even started using it. I almost certainly would never have tried Duolingo if it was a premium-only service for 11€ / month. Not even to mention that I don't care that much about some languages either: Italian and Spanish, which I mainly added because "I can". If they want my money, offer me value for it and don't expect me to keep a tab to pay for months or years of past service :P.
This article explains how to cancel a monthly subscription on an Android phone: https://support-splashtoppersonal.splashtop.com/hc/en-us/articles/230005227-How-do-I-unsubscribe-from-an-auto-renewing-subscription-on-Android-devices-Tablet-Handset-
Everything in the store is sold "at cost". You'd still be helping from an advertising perspective, but no money spent at the store goes to Duolingo as profit. Take a look here: https://www.duolingo.com/comment/900265/Introducing-gear-duolingo-com