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
Ford PATS Incode Calculator
Calculate the Incode by enter Outcode from diagnostic tool.
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.9
27 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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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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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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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 Ford PATS Incode Calculator: 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
Expand the database to include more models and years.
Assumption to check: Limited vehicle model options
Validate with people who use this workflow before building.
Hypothesis 2
Simplify navigation and improve input feedback.
Assumption to check: User interface can be confusing
Validate with people who use this workflow before building.
Hypothesis 3
Optimize code and improve error handling.
Assumption to check: Frequent crashes reported
Validate with people who use this workflow before building.
Hypothesis 4
Implement iCloud sync for user convenience.
Assumption to check: No iCloud sync for 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
Calculate the Incode by enter Outcode from diagnostic tool. Incode is required for performing key programming, control unit replacement and other procedures. ATTENTION: The number of generated incodes is limited. When you purchase the app you get 5 TOKENS, which gives you the opportunity to generate 5 Incodes. After the limit is exhausted, you can buy the required number of tokens. App works with models till May 2010 which has single (starts with 0040) or double outcode (starts with 0044). App DOESN'T work with outcodes starts with 01, 02, 10, 20, 30, 40, 50, 60, 70! Internet connection required for code calculations. Ford Fiesta Outcode: 84C591 Incode: AD59 Mazda RX-8 Outcode PCM: 4530D8 Incode: 517C Jaguar use first 6 digit only. Outcode: 05500652 -> 055006 Incode: 3EAA Supported model list (work till 05/2010): Ford Focus, C-MAX, S-MAX, Fusion, Mondeo, Kuga, Galaxy, Transit, Tourneo Conect, Ka, Fiesta, Taurus, Crown Victoria, Thunderbird, ZX2, Mustang, GT, Edge, Escape, Explorer, Expedition, Ranger, Super Duty, Freestar; Mazda 2/Demio, Mazda3/Axela, Mazda5/Premacy, Mazda6/Atenza, Mazda8/MPV, CX-7, CX-9, Biante, Carol, AZ-Wagon, AZ-Offroad, Spiano/Scrum Vagon, Verisa, MX-5, Biante, Tribute; Mercury Grand Marquis, Mariner, Sable, Milan, Mountaineer, Marauder, Montego, Monterey; Lincoln Zephyr/MKZ, LS, Town Car, MKS, Aviator, Mark LT, MKT, Navigator, MKX, Blackwood; Land Rover Discovery, Range Rover Defender, Freelander, Range Rover Sport;\n\nJaguar X-Type, XK/XKR, S-Type, XF/XFR, XJ8/XJR;
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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
axios
react-navigation
react-native-async-storage
expo-notifications
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.
