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
Opel App
7600+ OBD-2 Diagnostic Trouble Codes special for OPEL:
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.4
7 ratings · Top 30%
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/
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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 Opel App: map the core Shopping 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 advanced filtering and sorting features.
Assumption to check: Limited product filtering options
Validate with people who use this workflow before building.
Hypothesis 2
Optimize image loading and caching.
Assumption to check: Slow loading times for images
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate user review and rating features.
Assumption to check: No user reviews or ratings for products
Validate with people who use this workflow before building.
Hypothesis 4
Enhance search with autocomplete and filter options.
Assumption to check: Weak search functionality
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
7600+ OBD-2 Diagnostic Trouble Codes special for OPEL: • Detailed diagnostics trouble code information • Title, "Possible causes", "When is the code detected?", "Possible Symptoms" and "Description" • Personal favorites list • Clipboard and text sharing 300+ Dashboard Warning Lights, Indicators & Car Symbols: • Red, yellow, green, white, blue warning lights and symbols • Search by indicators and symbols • Personal favorites list • Name and complete description for each indicator • Large, colored icons Most Complete OBD-2 Information: • OBD-2 connector • OBD-2 diagnostic connector • OBD-2 interface and Pin layout • Diagnostic connector location • OBD-2 fault codes explained • Security issues • Useful links 1200+ Car Abbreviation and Definitions: • Search by abbreviation and definition • Personal favorites list Other Features: • Supports 3D Touch Icon App for fast code search, abbrs and indicators • Find a Audi Dealer close to you • Email Support and Social groups • 6 Colorful Themes for the App • 30 Quality Stickers for iMessage Supported Models: ● Opel Adam ● Opel Agila ● Opel Antara ● Opel Ascona ● Opel Astra ● Opel Calibra ● Opel Cascada ● Opel Combo ● Opel Commodore ● Opel Corsa ● Opel Crossland X ● Opel Frontera ● Opel GT ● Opel Insignia ● Opel Kadett ● Opel Karl ● Opel Manta ● Opel Meriva ● Opel Mokka ● Opel Monterey ● Opel Monza ● Opel Omega ● Opel Record ● Opel Senator ● Opel Signum ● Opel Sintra ● Opel Speedster ● Opel Tigra ● Opel Tour ● Opel Vectra ● Opel Vivaro ● Opel Zafira and other models -- ► NO ADS! ► 50% OFF SALE ► BUY NOW ►
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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
React Navigation
Zustand
react-native-reanimated
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.
