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
Dukes App
Turn-by-turn navigation built for the road
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 3.9
23 ratings · Top 50%
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 Dukes App: 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 offline maps and saved routes.
Assumption to check: Limited offline capabilities.
Validate with people who use this workflow before building.
Hypothesis 2
Simplify layout and enhance filtering options.
Assumption to check: Cluttered UI in search results.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize map rendering and data fetching.
Assumption to check: Inconsistent performance during navigation.
Validate with people who use this workflow before building.
Hypothesis 4
Integrate voice-guided navigation to enhance usability.
Assumption to check: Lack of voice navigation features.
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
Turn-by-turn navigation built for the road. Dukes App delivers real-time route planning, voice-guided directions, speed limit monitoring, and live ETA tracking in a clean, driver-focused interface designed for minimal distraction. Navigation • Full turn-by-turn navigation powered by Apple Maps • Voice-guided directions with distance and street name announcements • Real-time speed limit display • Live ETA, remaining distance, and travel time • Destination search with nearby places, recents, and categories • Favorites for one-tap navigation to saved locations • Automatic rerouting when you deviate from your route • Works in both portrait and landscape orientation Speed Camera Alerts • Database of 18,000+ speed and red light cameras • Adjustable alert distance (200m – 1 km) • Direction-aware enforcement detection • Voice announcements for upcoming cameras Driving Profiles & Automation • Create location-based profiles that activate automatically using geofences • Set default driving preferences that apply outside any geofence • Customize alert behavior, sensitivity, and muting per zone • Legal notification reminders based on your driving region Smart Alerts & Safety • Customizable alert banners with adjustable size and appearance • Voice alerts with unit preference support (metric or imperial) • Speed-based muting for low-priority alerts • GPS lockouts to silence repeated false alerts at known locations Alert Logging & Trip History • Every alert is logged as a session with band, frequency, time, and GPS path • View full routes on a map with start/end pins • Compare multiple sessions with overlaid routes • Session summaries with distance, time, and signal details Detector Integration • Connect to compatible Uniden (R4, R4W, R8, R8W, R9, R9W) and Radenso (DS1) devices via Bluetooth • View device model, firmware, and status from a single dashboard • Multi-device support for households with multiple vehicles • Standalone mode available — no detector required Power Management • Standalone Mode: when unplugged for 5 minutes, the app enters standby to save battery • Plugging back in instantly resumes all features • Optimized background operation for long drives Preferences • Metric or imperial units • Light, dark, or automatic theme (switches with sunrise/sunset) • Adjustable banner size and alert behavior • Toggle logging, haptic feedback, and voice guidance independently Join the community and learn more about Dukes App on RDForum: https://www.rdforum.org/forums/291/
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
react-navigation
axios
react-native-maps
expo-location
BUILD KIT DIFFICULTY
Advanced
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.
