I have a few friends very invested in the "polyglot" community who could definitely make use and find a lot of value in this! Well done on launching version 4 of this product!

I originally developed Wokabulary to better learn Korean. I was attending an evening class and had to jot down lots of new words in class. Repeating and learning the new word was quite hard, however, because paper based word lists were too inflexible and inconvenient. So, I decided to write my own Mac app with an automatic spaced repetition scheme — that was 10 years ago. This is now version 4 already. And since the early days, Wokabulary has evolved into a full featured app that you can use on your Mac, your iPhone or your iPad (synced via iCloud). Wokabulary is deliberately different from most language learning apps, as we do not sell content. Wokabulary comes as a blank notepad and is intended for people who attend a language class and who need to learn and practice their personal vocabulary sets.