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K2

Flashcard app teaching the 1,006 kanji taught in Japanese grades one to six, weighting each card's return by your recent misses.

Actively maintained

LearningFor consumersFree tier
k2kanji.com ↗
Open k2kanji.comAlternativesSet it up for my teamIs K2 yours? Claim the card →
At a glanceswept Oct 23, 2026

≈ 3visits/mo

Use not read yet · estimate, read Oct 23, 2026

For
Learners of Japanese who want to memorise the kanji taught in grades one to six, including complete beginners
Activity
Actively maintainedrelease 5 weeks ago · site updated 6 days ago
Used for
  • recall a kanji's meaning from its character
  • practise kanji readings with spaced repetition cards
  • practise writing kanji from memory
Worth knowingcomputed from what we read · each with its source
How a program reaches itfound, not claimed · read Oct 23, 2026
  • MCP servercom.k2kanji/studyverified in the MCP registry
  • Stateanswers, 7 toolschecked 2026-10-23
  • Address to connectk2kanji.com/api/mcp

MCP server details →

This card as JSON, for your agent →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Alternatives in Learningby use, among tools still maintained

Figure and bar: visits/mo, estimate · year: online since

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beta

Three tools from the Atlas for the job you describe, each with what fits and what does not.

From people who use itnot part of the reading

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Questions this page answers
  • What is K2?

    Flashcard app teaching the 1,006 kanji taught in Japanese grades one to six, weighting each card's return by your recent misses. It is listed in the Atlas under Learning.

  • Who is K2 for?

    Learners of Japanese who want to memorise the kanji taught in grades one to six, including complete beginners

  • Is K2 still maintained?

    Actively maintained: release 5 weeks ago · site updated 6 days ago.

  • What are alternatives to K2?

    In Learning, by use: Flipnem, mnemobuddy.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.

How we read every tool → · By INITE Atlas Desk