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.
App Overview
Kana LS Touch
Kana LS Touch is an App for learning Hiragana and Katakana
$3.99
PRICE
$3.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.3
3 ratings · Top 30%
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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included15 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
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.
JavaScript is required to complete mailbox verification.
Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Kana LS Touch: map the core Education workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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
Incorporate gamification features like points and badges for completing lessons.
Assumption to check: Limited interactivity in learning exercises
Validate with people who use this workflow before building.
Hypothesis 2
Add forums or chat features for learners to discuss.
Assumption to check: No community features for user interaction
Validate with people who use this workflow before building.
Hypothesis 3
Include videos or images to engage users better.
Assumption to check: Lack of rich media content
Validate with people who use this workflow before building.
Hypothesis 4
Enable offline mode for downloaded lessons.
Assumption to check: No offline access to lessons
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
Kana LS Touch is an App for learning Hiragana and Katakana. It utilizes the unique touch interface to intuitively teach you how to draw the Hiragana and Katakana characters by displaying strokeorder guidelines. KANA - all Hiragana and Katakana Characters: - Basic Hiragana/Katana - Dakuten, Handakuten, Yōon Kana - extended Katakana - Strokeorder guidelines for all Kana - Sounds for all Character - many sample words (all words have Kana, Romaji, english, german & french translation) - numerous ways to select the kana you want to train: - just Hiragana, just Katakana or both together - custom selection (Kana selected via the browser) - Range of Kana (e.g. Kana 10 till Kana 30) TEST - 2 Testmodes: - Direct Input (drawing or keyboard) - Multiple Choice - 4 Testtypes: - Romaji -> Kana - Kana -> Romaji - Word -> missing Kana - Sound -> Kana KANA BROWSER - overview of all Hiragana/Katakana character - select specific character for a custom selection you want to train MISC - Practice mode (for learning how to draw the Kana) - practice and testing with 2 fonts (HANDWRITING FONT & system font) - Backup & Sync between devices via iCloud - Learning with the Leitner system (SRS) - application fully localized in English, German, French for more information/videos/screenshots/handbook: www.asia-ls.com/ios/kana.html If you like this application check out: KANJI LS TOUCH JAPANESE LS TOUCH If you find a bug in the software please send me an email [jan(a)asia-ls.com] with as many information as possible so I can try to reproduce and fix it: - device & firmware - what did you do step by step - settings (current set, test mode, Leitner active...) - does it happen always/sometime/once This app uses Icons form icon8 (https://icons8.com/license/)
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
React Native Reanimated
Expo AV
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.
