Bunpro
SRS for grammar points, N5 to N1, with links out to the best explanation of each.
WebsitesAppsToolsFreemiumBeginnerIntermediateAdvancedA1–C1
What it actually is
Fills the gap Anki and WaniKani leave: it drills grammar in cloze sentences and, for every point, links to the relevant page in Tae Kim, Genki, Imabi and others so you can read a real explanation before reviewing. There is a permanent free tier plus a 30-day full trial; Premium is $5/month or $150 lifetime, which is cheap for what it covers. It assumes you already have kana and some vocabulary, and it is a review tool rather than a first-time teacher.
What it covers
- Grammar
- Reading