Credits

Voices

VOICEVOX: 四国めたん・ずんだもん

Japanese listening tracks use VOICEVOX 0.25.2. VOICEVOX terms. Voice-library guidelines. No character endorsement is implied.

Word-reading source

Words and readings: jlpt-word-list, MIT license, copyright Jamie Sinclair (2020), elzup (2020). The source uses community level classification. It is not an official or exhaustive JLPT vocabulary list. Source meanings are not reproduced in the app.

Full MIT notice

Interface and artwork

Inter and Noto Sans JP: SIL Open Font License. Phosphor icons: MIT. Illustrated game assets were generated for GATAN with image-generation tools. The short background melody and sound cues are original procedural Web Audio compositions for GATAN.

Technology

Cloudflare Workers and D1. Open-source runtime dependencies include jose (MIT). Third-party notices.