App Overview

Study Kanji icon

Study Kanji

Lars Tray · Education

Study Kanji: Your Ultimate Guide to Mastering Japanese

$0.99 · In-app purchases

PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
3.0
2 ratings · Below Average

Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.

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Build Kit

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A product spec, screen plans, and build steps for your coding agent.

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What's included18 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

Feature spec

Goal: Send a clear invoice after finishing a job.

  • Add a client, line items, a due date, and payment instructions.
  • Preview the total before exporting a PDF.
  • Keep an editable draft if export fails.

Screen plan

Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.

States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.

Differentiate and validate

Hypothesis: Contractors need faster repeat invoices more than more templates.

First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.

The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.

Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.

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Free quick prompt For a smaller starting point

Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Study Kanji: map the core Education workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

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Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.

Hypothesis 1

Expand the database to include more characters and learning resources.

Assumption to check: Limited kanji character database

Validate with people who use this workflow before building.

Hypothesis 2

Enhance UI with gamification elements like streaks and achievements.

Assumption to check: User interface is not engaging

Validate with people who use this workflow before building.

Hypothesis 3

Optimize quiz loading times and responsiveness.

Assumption to check: Inconsistent performance during quizzes

Validate with people who use this workflow before building.

Hypothesis 4

Implement offline access for learning materials and quizzes.

Assumption to check: Limited offline capabilities

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

Study Kanji: Your Ultimate Guide to Mastering Japanese Unlock the realm of Japanese Kanji with Study Kanji, the ultimate iOS app designed to accelerate your language learning journey. Discover an in-depth, intuitive, and interactive experience that demystifies the process of mastering kanji with ease and efficiency. Extensive Kanji Dictionary: Study Kanji offers a full kanji dictionary, providing detailed definitions, readings, stroke orders, and examples. This comprehensive resource acts as your personal guide to understanding the complexity and beauty of every kanji character. Interactive Game: Take a break from traditional study methods and step into the world of our engaging kanji game! These interactive features are scientifically designed to reinforce your learning, improve recall, and deepen your understanding of the language in a fun and captivating way. Efficient Flashcards: Leverage our effective flashcard system for rapid learning and revision. Seamlessly flip through kanji, and meanings at your convenience. The flashcards span from basic to advanced kanji and are methodically categorized for effortless navigation. Robust Analytics: Stay up to speed with your progress using our powerful analytics feature. Track your learning curve, identify your strengths and areas that require more focus, and customize your study plan accordingly. With real-time performance feedback, Study Kanji keeps you motivated and on the right track. Kanji Stories: Introducing our unique Kanji Stories, where every kanji comes with an engaging short story that aids in memory retention and quick recall. Immerse yourself in the richness of the Japanese language and culture, while employing this effective mnemonic technique. Download Study Kanji today to revolutionize your Japanese learning journey. Experience the thrill of learning with our inventive features and exhaustive resources. Join our burgeoning community of language enthusiasts and start your kanji mastery journey now! Study Kanji - Empowering You to Master Japanese!

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Screenshots

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Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

SUGGESTED BUILD STACK
React Native
Expo
Supabase
React Navigation
Zustand
@react-native-async-storage/async-storage
BUILD KIT DIFFICULTY
Intermediate

From the Build Kit assessment.

A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.