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Kanji Ninja 2.0
An interactive educational platform that gamifies Japanese character learning through competitive brain games
since Jul 12, 2026 · HTTP 429
CohortClass of 2016What it is
An interactive educational platform that gamifies Japanese character learning through competitive brain games. Users engage in real-time challenges to build fluency with kanji, hiragana, and katakana through battle-style gameplay mechanics.
HTTP liveness
9 probes since Jun 16Jun 16Jul 12
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jul 12, 2026Redirected offsiteRedirected offsite
- Jun 20, 2026Went darkDead · 404
- Jun 19, 2026Redirected offsiteRedirected offsite
- Jun 16, 2026First probe — downDead · 404
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Pulse Indexobserved activity
9 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2016weekly
13,657 products launched in 2016 · 100% still active
13,633 active24 sunset
Still active
100%
Median lifespan
4.9y