I just logged in to iKnow.jp for the first time this year and I see that they have coupons for both new and existing users. Just wanted to share these in case anyone is interested in trying iKnow.jp SRS for the first time or extending their subscription.
New users: free 3-month trial
- Coupon: newyear2019
- Sign up here: https://iknow.jp/signup?coupon=newyear2019
Existing paid users: 1-month free
- Coupon: gift2019
- See how to redeem here: https://support.iknow.jp/hc/en-us/articles/206400361
From a previous thread:
What’s iKnow.jp again? 
A web application that uses SRS for learning vocabulary and sentence patterns. Official courses are offered for studying Japanese, Chinese, and SAT English. The Japanese Core 6000 covers the 6,000 most commonly used words in Japanese, and the Chinese Core 2000 covers the 2,000 most commonly used words in Chinese (available in traditional and simplified courses). All words have sample sentences and audio. Most words have also related pictures to help you remember. There’s also courses made by the iKnow community that you can add and study. You can also make your own courses and share them with the community. iKnow is also a good place for shadowing context sentences for each vocabulary item.
But… WaniKani teaches vocabulary, what’s the difference?
The vocabulary learned in WaniKani is kanji based. That’s not there is to it to Japanese. There’s quite the amount of kana only vocabulary that you need to learn. Nevertheless, learning vocabulary from multiple sources is good for your studies. There have been several times where learning the vocabulary from iKnow helped me remember WaniKani vocabulary (meaning and reading), and vice-versa. One good thing about iKnow is that it gives multiple context sentences per vocabulary that you can actually follow and use for shadowing.
There’s a free official app for both iOS and Android:
- iOS: https://itunes.apple.com/us/app/learn-japanese-chinese-iknow!/id417713473
- Android: https://play.google.com/store/apps/details?id=com.cerego.iknow
!
A tip for those who are trying iKnow for the first time:
Don’t stay stuck studying 1 course! You can add as many courses as you’d like. I’m doing 5 at the moment. Once you have all items started in a course, I would recommend jumping to the next one. Don’t pay too much attention to the % of an item. It will be mastered sooner or later. Just keep learning new words and reviewing as much as possible. Find the right balance for how much you can study/review and the system will repay you enormously. Good luck with your studies!
Screenshots (desktop web app - mobile app looks similar):



iKnow is a service I tried but placed on the back burner once I started using WaniKani. I appreciate you sharing the coupon, since this gives me a chance to give this another go and evaluate whether I want to include it in my routine in the future.