This app was mentioned in 5 comments, with an average of 3.40 upvotes
Highly recommend it. It has certain scripts to increase efficiency within wanikani like preventing going to the next kanji if you make a mistake so you don't skip the explanation.
Also wanted to mention WaniKani because it's the only method that's got me to practice Kanji nearly every day. Best used in conjunction with a third party mobile app (I use WK for WaniKani)
Link: https://www.wanikani.com/
Link for WK for WaniKani: https://play.google.com/store/apps/details?id=tr.xip.wanikani
I'm not so sure about apple devices, but Android does have a wanikani app (not from tofugu, I believe), but it does come with the ignore answer function which is great. I do probably 70% of my reviews from my phone and the UI is great.
Actually, just searched
It actually seems the Apple version has much more features than the android one. I would kill for the reorder script! I'm also interested in what the "fast-forward" script is, but I'm still content with just having an ignore option.
I can still find it. Here
Here's the store page: https://play.google.com/store/apps/details?id=tr.xip.wanikani