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
Singapore Buses
Discover Singapore Buses: Your Ultimate Bus Companion
$0.49 · In-app purchases
PRICE
$0.49
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.9
14 ratings · Top 5%
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 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 Singapore Buses: map the core Navigation 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 real-time data updates and user feedback mechanism.
Assumption to check: Users report inaccuracies in bus arrival times.
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to download bus routes and schedules for offline access.
Assumption to check: Limited offline functionality.
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the UI with better spacing and visual hierarchy.
Assumption to check: The UI can be cluttered with too much information.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize data fetching and caching strategies.
Assumption to check: Slow loading times for bus schedules.
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
Discover Singapore Buses: Your Ultimate Bus Companion Welcome to the future of bus commuting in Singapore! Singapore Buses offers a comprehensive suite of features designed to elevate your daily journey: 1. Real-Time Bus Insights Stay ahead of the curve with precise* bus arrival predictions, capacity updates, vehicle types, and detailed bus schedules—all at your fingertips. 2. Interactive Map Exploration Experience the magic of our interactive map! Drag to explore and watch as bus stops smoothly materialise before your eyes. Tap any stop to uncover additional details or check for upcoming arrivals. 3. Swift and Smart Search Find your way effortlessly by searching for bus stops via code, name, or road, and routes by their service numbers. Results appear in real-time as you type, ensuring a seamless experience. 4. Favorites for Quick Access Mark your most-used bus stops as favourites, ensuring swift and hassle-free access whenever needed. 5. Route Revelation Discover the remaining stops on your selected bus route, all from the bus stop you're currently viewing. Want the bigger picture? Tap "View Route Map" to visualise the entire route. Plus, our map annotations convey the bus's direction intuitively. 6. Notify Me on Arrival No more wondering when to disembark! Activate "Notify Me on Arrival", and the app will notify you promptly as you approach your chosen bus stop. 7. Explore Your Surroundings with "Look Around" Explore the vicinity of a bus stop to understand your surroundings better. 8. Live Activities (Singapore Buses+ Required) A next-generation tracking feature exclusive to Singapore Buses+: track upcoming arrivals right from your Lock Screen. No more constant app-opening—stay informed effortlessly. 9. Works Offline Even when you're offline, our app remains your trusty companion. While you won't receive real-time arrival estimates, route and schedule information remains accessible. Embark on a smoother, smarter, and more convenient bus journey with Singapore Buses. Download now and unlock a world of transit possibilities! * As precise as the data provided. Terms and Conditions: https://singaporebuses.app/terms Privacy Policy: https://singaporebuses.app/privacy
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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
Zustand
React Navigation
React Native Maps
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.
