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
Duke Energy
with the duke energy app, you’ll be able to easily manage and view your accounts anywhere, anytime. current features of the duke energy app allow you to:
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
122,297 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 Duke Energy: map the core Utilities 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
Enhance account customization and management options.
Assumption to check: Limited account management features compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Simplify navigation structure and streamline user experience.
Assumption to check: Complex navigation for some users
Validate with people who use this workflow before building.
Hypothesis 3
Focus on optimizing performance and stability.
Assumption to check: Occasional crashes during heavy usage
Validate with people who use this workflow before building.
Hypothesis 4
Incorporate personalized energy-saving recommendations.
Assumption to check: Lack of proactive energy-saving tips
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
with the duke energy app, you’ll be able to easily manage and view your accounts anywhere, anytime. current features of the duke energy app allow you to: • easily log in. using your duke energy account, you’ll be able to log in once and have options to set up either touch id® or face id® to easily access your account. • view and pay bill. access your bill from anywhere and set up automatic payments. you can also view your billing history and easily compare bills from last year and last month. • report an outage. inform us if your power is out and get updates on when it is estimated to be restored. • track energy usage. view your past and recent energy use so you can better manage it and get more detailed information. • set up bill reminders. stay on top of your bill and always know when to pay. • save more. take advantage of our energy and money-saving offers. • customer service. contact our customer support if you ever have questions about your service or your energy bill.
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 Navigation
Victory Native
Axios
React Native Async Storage
Expo
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.
