yes, also Flaming Durtles lets you prioritize level-up reviews in the advanced settings.
I’m in my 50’s and know nothing about userscripts, so I’m glad to hear they’re not a necessity. I’ve used other sites as well, Duolingo, Fluent Forever, Memrise. I’m not leveling up as quickly so I expect my journey to take a few years. Hopefully I’ll stay motivated. 万歳!
Congratulations on this outstanding achievement!
Now, courtesy of Nakiri Alice, please enjoy your 
先輩!
Congratulations! I was really impressed with your accuracy, especially with your Kanji!! Inspiring!