[gwd]

> People with money overwhelmingly buy iPhones. $25 is a pittance for anyone who can afford an iPhone. Anybody who uses Anki seriously gets far, far more value than $25 out of it. I used it for well over 200 hours before I stopped and I know I’ll go back to it again.

I used Anki's web interface from my phone for about 6 months before I bought the iOS app. Then about 4 years after using the app almost every day, I sent them another $25 donation. I got way more than $50 worth of value out of it over the 10 years that I used it.

(I've now written my own study tool for Chinese which fixes some of the issues with using flashcards for language learning. Maybe at some point it will show up on "Show HackerNews"; but it's slow going when you've only got a few hours a week.)