I have just paid to Glossika, yearly too, but I regretted it a little… yearly, too expensive.
You can use Audio sentences, also by JLPT, 1000 sentences per 10 levels; compiled from WaniKani and Core 10k context sentences and just used Anki with AwesomeTTS. Or, just automate with a script…
I will consider doing that, if I got a better hang of Android programming…