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
BridgeWatch
BridgeWatch shows the live status of the Lake Pontchartrain Causeway at a glance
$3.99
PRICE
$3.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 included16 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 BridgeWatch: 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 push notifications for instant alerts.
Assumption to check: Limited real-time updates can lead to outdated information
Validate with people who use this workflow before building.
Hypothesis 2
Design a more user-friendly layout with clear navigation.
Assumption to check: Inconvenient user interface can confuse users
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to download bridge maps for offline access.
Assumption to check: No offline functionality limits usability
Validate with people who use this workflow before building.
Hypothesis 4
Enable users to set specific alert preferences for bridges.
Assumption to check: Lack of customization options for alerts
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
BridgeWatch shows the live status of the Lake Pontchartrain Causeway at a glance. It is an independent, unofficial app and is not affiliated with, endorsed by, or operated by the Greater New Orleans Expressway Commission. Anyone who crosses the bridge knows the feeling: you are halfway out the door and wondering whether fog closed it an hour ago. BridgeWatch answers that question before you leave the driveway. WHY BRIDGEWATCH • One glance: a full-screen status that reads from across the room. Green means clear, amber means caution or fog, red means closed. • Push alerts: get notified the moment the bridge closes, and again when it reopens, with the reason ("The accident closure near the 16 mile marker has ended"). • Choose your alerts: every change, or closures only. • On your schedule: quiet hours, a commute window, and a direction filter, all enforced on your device so your schedule never leaves your phone. • Home screen widgets: bridge status without opening the app, in every size, including lock screen widgets. • Both directions: northbound and southbound tracked separately. • Recent alerts: a short history of what happened and when. PRIVATE BY DESIGN No account. No location tracking. No analytics. The only data tied to the app is an anonymous push token used to deliver your alerts. Your notification preferences never leave your device. HONEST ABOUT ITS LIMITS BridgeWatch reads the Causeway's public alert feed and classifies it automatically. Status can occasionally be delayed or incomplete, so always verify conditions with official sources and obey posted signs. Never use the app while driving. Questions or feedback: [email protected] Terms: bridgewatch.tassin.tech/terms.html Privacy: bridgewatch.tassin.tech/privacy.html
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
Supabase
react-navigation
zustand
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.
