Gemini Executive Synthesis

DAG-based Kanji learning app ("Kanji Atlas").

Technical Positioning

A tool for learning Japanese Kanji by visually exploring their structural connections through a "recursive DAG-style component graph," addressing the lack of existing tools that show these relationships. It integrates memory heatmaps, spaced repetition, and contextual learning.

SaaS Insight & Market Implications

This product targets a specific educational niche: Japanese Kanji learning. It addresses a common pain point for learners—understanding the structural relationships between Kanji components—by leveraging a DAG-based visualization. This approach moves beyond rote memorization, offering a more intuitive and contextual learning experience. Features like memory heatmaps and spaced repetition enhance retention and personalized learning paths. While the "waifu" element is a consumer-facing quirk, the core value lies in its pedagogical innovation. The market for language learning apps is vast and competitive, but this tool carves out a specialized segment by focusing on a specific, complex aspect of Japanese language acquisition with a unique methodological approach.

Proprietary Technical Taxonomy

Raw Developer Origin & Technical Request

Hacker News May 8, 2026

Show HN: DAG-based Kanji learning through components

Hi HNI built this app while learning Japanese kanji after struggling to find a tool that showed how kanji are structurally connected through their graphical components.The core feature is a recursive DAG-style component graph (“Kanji Atlas”) that breaks kanji down layer by layer into radicals and graphemes, so you can visually explore how characters are constructed and related to one another. Demo at mykanji.app/components/kanji/... also built in a lot of my own opinions about how a learning tool should feel and work. Some features:1. A kanji memory heatmap — the idea is that learners should be able to see at a glance which parts of the writing system they actually know well and which areas are weak.2. Study desks + spaced repetition review for long-term retention.3. Kanji, words, and graphemes are interconnected, so learning happens through relationships and context instead of isolated flashcards.4. Lessons follow the Japanese school grade progression (Grade 1–6).5. Quized sessions are hosted by Mizuki Sensei — possibly your future waifu!I’d especially love feedback from people who have gone deep into kanji study before.I’m also happy to answer questions and discuss feedback regarding the technical side, UX, learning approach, product direction, or anything else about the project.Visit mykanji.app

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