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
CoPilot GPS Navigation
Built for you, the driver
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 3.5
2,039 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 CoPilot GPS Navigation: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Built for you, the driver. Whether you are behind the wheel of a car, a professional truck driver with profits tied to your time on the road or an RVer exploring the country - CoPilot has got you covered. Trusted by millions of drivers globally and many of the world’s leading delivery fleets, CoPilot GPS is designed to meet the needs of all driver and vehicle types to help you safely navigate the roads. Let us help make it productive and enjoyable. Includes 14 days FREE voice-guided offline navigation, route planning and traffic. Try the app without any commitment and if you like it, you can subscribe at anytime. TRUCK NAVIGATION & TRAFFIC*** • Keep out of trouble by avoiding low bridges and truck-restricted roads with PC*MILER routing • Driver-friendly non-distracting guidance in cab, so you can concentrate on the road • Plan trips that are optimized for your vehicle and load • Save money avoiding fines, out-of-route mileage and reduce fuel usage • Deliver on time and get precise ETAs with real-time traffic • Live and predictive parking insights for truck stops and rest areas to help you save time and stay on schedule • Map display provides more visual cues including satellite imagery, • 3D buildings and detailed house numbering CAR NAVIGATION & TRAFFIC • Find your best way with a choice of up to 3 routes • Drive confidently without a mobile signal with automotive-grade offline maps • Discover what’s around you with millions of pre-loaded Places • Avoid delays with real-time traffic and automatic rerouting around congestion* • Explore any place, anywhere, in any way with maps of the world** • Apple CarPlay connectivity for a seamless navigation experience RV NAVIGATION & TRAFFIC*** • Routes and directions designed for RVs based on your vehicle size • Never get stranded again with reliable offline maps • Search millions of preloaded Places including campgrounds and rest areas • Know your turn ahead of time with lane indicator arrows & exit sign information For detailed map coverage, check out copilotgps.com/map-coverage STAY CONNECTED facebook.com/copilotgps | Twitter: @copilotgps NOTES *Requires a mobile internet connection **Requires additional map upgrade ***Not available in all regions To find out more about the maximum dimensions for your RV navigation, visit our support center support.copilotgps.com (height 14ft, width 102in, total length 45ft, weight 26,000lbs). Continued use of GPS running in the background can dramatically decrease battery life For full details of our terms of use please visit https://copilotgps.com/eula/
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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 map updates and user feedback.
Assumption to check: Inconsistent map accuracy compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance app stability through rigorous testing.
Assumption to check: Frequent crashes during navigation.
Validate with people who use this workflow before building.
Hypothesis 3
Offer full offline map downloads for premium users.
Assumption to check: Limited offline map capabilities.
Validate with people who use this workflow before building.
Hypothesis 4
Simplify UI for easier navigation and better user experience.
Assumption to check: Cluttered user interface.
Validate with people who use this workflow before building.
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-async-storage/async-storage
react-native-maps
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.
