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
VAG Virtual Cockpit ELM327 OBD
The VAG Virtual Cockpit shows important diagnostic parameters of your car
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.7
6 ratings · Below Average
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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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/
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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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for VAG Virtual Cockpit ELM327 OBD: map the core Lifestyle 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
Add advanced diagnostics and reporting features.
Assumption to check: Limited functionality compared to dedicated OBD-II devices
Validate with people who use this workflow before building.
Hypothesis 2
Improve UI/UX with modern design elements.
Assumption to check: User interface is not user-friendly
Validate with people who use this workflow before building.
Hypothesis 3
Enhance connection stability and provide troubleshooting tips.
Assumption to check: Connection issues with ELM327
Validate with people who use this workflow before building.
Hypothesis 4
Implement a comprehensive vehicle log feature.
Assumption to check: Lack of detailed vehicle history
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
The VAG Virtual Cockpit shows important diagnostic parameters of your car. You only need an ELM327 adapter. Version 3.3 shows the next parameters. Virtual Cockpit 1) Opened doors 2) Speed 3) RPM 4) Oil temperature 5) Coolant temperature 6) Fuel in the tank in litres 7) Range in kilometers 8) Average consumption 9) Time in the machine 10) Odometer 11) Outside temperature 12) Voltage Engine control unit 1) RPM 2) Mass Air Flow Sensor (G70) 3) Intake Air Temperature (G42) 4) Exhaust Temperature Projection 5) Oil Warning Threshold 6) Oil Level 7) Boost Specified 8) Boost Actual 9) Misfire Counter 10) Ignition Angle Delay 11) Oil temperature 12) Valve N75 Transmission control unit 1) ATF Temperature (G93) - AISIN 2) Temperature Transmission Fluid (G93) - DSG6 3) Temperature Control Module (G510) - DSG6 4) Temperature Clutch Oil (G509) - DSG6 5) Temperature Control Device (G510) - DSG7 6) Temperature Microprocessor - DSG7 7) Clutch Temperature - DSG7 Battery control unit 1) Battery voltage 2) Battery current 3) Battery temperature 4) Battery state 6) Battery aging 7) Internal battery resistance 8) Alternator current 9) Alternator power AWD unit Haldex 3/4 1) Oil temperature 2) Oil pressure 3) Torque 4) Pump current 5) Supply voltage (Terminal 30) Haldex 5 1) Oil temperature 2) Pump current 3) Supply voltage (Terminal 30) 4) Pump voltage 5) PWM signal of pump 6) Temperature of the control unit 7) Temperature of friction discs Long hold of the TRIP switch changes the view style of the parameters. Supported next ELM327 adapters: - Viecar BLE 4.0 - Konnwei BLE 4.0 - Vgate vLinker MC+ - OBDLink MX+ The application has been tested with Skoda Octavia A5 2011 release. Partially or fully supported by other auto brands of the VAG group: Volkswagen Skoda Seat Audi Porsche If the parameters are not displayed correctly or not completely, please contact with me by Email: [email protected].
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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.
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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.
