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
Hong Kong Taxi Translator
"The Hong Kong Taxi app is a very well designed and developed app that every Hong Kong, non-Canto speaking visitor or resident should, scratch that, must have." - App of the week, Chatty Brains Hong Kong
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.6
15 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.
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 included17 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.
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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 Hong Kong Taxi Translator: map the core Travel 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
Add multiple language support for a broader user base.
Assumption to check: Limited language options for translation
Validate with people who use this workflow before building.
Hypothesis 2
Create a cleaner, more modern interface with intuitive navigation.
Assumption to check: User interface is not user-friendly
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the subscription model and clearly explain benefits of paid features.
Assumption to check: In-app purchases can be confusing
Validate with people who use this workflow before building.
Hypothesis 4
Implement thorough testing and quality assurance to improve app stability.
Assumption to check: Low ratings due to bugs
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
"The Hong Kong Taxi app is a very well designed and developed app that every Hong Kong, non-Canto speaking visitor or resident should, scratch that, must have." - App of the week, Chatty Brains Hong Kong The Hong Kong Taxi Translator is a powerful tool for finding and translating addresses in Hong Kong into written Chinese and phonetic Cantonese. The app comes loaded with over 7,000 streets, residential areas, buildings, hospitals, beaches, parks, sports grounds, schools, shopping malls and sightseeing spots. Can't find an address? Use AI Search to find any location in Hong Kong — powered by real-time web search, it translates addresses into Chinese and phonetic Cantonese instantly. With the ability to add street numbers, you can create flashcards for hundreds of thousands of unique addresses. Save your favorites for quick access and learn how to pronounce addresses in Cantonese using the Cantonese Yale phonetic system. Who uses this App? Anyone living in, or visiting Hong Kong, who doesn't speak Cantonese. Features: • Browse and search 6,000+ addresses • AI Search to find any address in Hong Kong • Show flashcard for taxi drivers • Show address on map • Addresses in Chinese characters and phonetic Cantonese • Save addresses in Favorites • Share addresses • Add your own street numbers
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.
SUGGESTED BUILD STACK
React Native
Expo
Zustand
Axios
React Navigation
Shadcn/ui
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.
