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
Cantonese/Yuet Dictionary Pro
Cantonese Dictionary Pro is the upgraded version of the critically acclaimed Cantonese Dictionary, looking up Cantonese Pinyin is even easier with the pro version!
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
3 ratings · Top 15%
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
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A product spec, screen plans, and build steps for your coding agent.
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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/
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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.
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
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Cantonese/Yuet Dictionary Pro: map the core Reference 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
Implement offline caching for searches and favorites.
Assumption to check: Limited offline functionality
Validate with people who use this workflow before building.
Hypothesis 2
Provide contextual example sentences for each word.
Assumption to check: Lack of example usage in context
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to submit word suggestions and definitions.
Assumption to check: No user contributions or feedback system
Validate with people who use this workflow before building.
Hypothesis 4
Add user profiles to track learning progress and favorites.
Assumption to check: No personalized experience
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
Cantonese Dictionary Pro is the upgraded version of the critically acclaimed Cantonese Dictionary, looking up Cantonese Pinyin is even easier with the pro version! ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ How can the app help you? ◦ You search the pronunciation by character, and vice versa. - The app supports both traditional and simplified Chinese characters. - Support 20000+ CJK ideoglyphs. ◦ You listen to the pronunciation by clicking the voice button. ◦ You bookmark the search results for future reference. ◦ You copy the result to clipboard. ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ The pro version is for you if you are also looking for, ◦ Ubiquitous Cantonese pinyin query service, thanks to the today widget (iOS 8 or higher required) ◦ Ad-free user experience ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ ▨ ▧ Should you find any errata, please don’t hesitate to inform us! Follow us on Twitter! ◦ https://twitter.com/AppAppWorks Follow us on Facebook! ◦ https://www.facebook.com/appappworks Follow us on YouTube! ◦ https://www.youtube.com/apoworks
Written user reviews are not shown here. Check current App Store reviews >
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.
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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.
