Independent studio · Japan

Simple tools,
crafted with care

We design and develop mobile apps with a focus on simplicity, offline usability, and thoughtful user experience.

Products
Japanese Drill app icon

Japanese Drill

4-choice quizzes for Hiragana, Katakana, Kanji, and JLPT N5 to N1. 5,000+ questions. Free. Offline.

Get it on Google Play
Japanese Drill home screen showing drill list, XP progress, and study streak
  • Drill selection home screen with XP progress and study streak
  • Question screen with four answer choices in Japanese
  • Answer feedback screen revealing the correct choice and explanation
  • Drill result screen with circular score animation
  • Progress screen with activity heatmap and accuracy stats
  • Settings screen with study preferences and theme options
Updates

Changelog

About

Built with care in Japan

Zelbr is an independent studio based in Japan. We design and develop mobile apps with a focus on simplicity, offline usability, and thoughtful user experience.

Our first product, Japanese Drill, is a Japanese language learning app for English speakers, now available on Google Play.

Contact

Get in touch

Questions, feedback, or partnership inquiries — we'd love to hear from you.

contact@zelbr.com Contact form