I’ve tried the Kanji Match app (v1.3.0) by @Divin
It’s a simple app that helps distinguish visually similar kanji. It takes no time at all to go through the entire review pile and it has great potential to avoid confusing the newly learned kanji with already known kanji that look similar. I only tend to notice those similarities when the Guru II / Master reviews come in and I fail them. This will hopefully spare me some review grief. Not to mention that it’s just an easy way to see the visually similar kanji side-by-side so you can hone in on the differences.
My plan is to incorporate it in my study routine and do the reviews 1-2x per week.
Thanks Divin for making this wonderful tool, and taking the feeback & feaure requests on-board!