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.
Track fuel economy for all your automobiles & get vehicle maintenance reminders with a customizable, user-friendly interface
$2.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Car Care fuel & service log: map the core Finance workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
Assumption to check: Limited customization options for fuel/service types
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of visual analytics for fuel efficiency
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Difficulties in input accuracy for odometer and amounts
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No reminders for regular maintenance
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Track fuel economy for all your automobiles & get vehicle maintenance reminders with a customizable, user-friendly interface. Fully iOS 13 compatible! Car Care is recommended by The New York Times, Edmunds, & Macworld. 40% off the regular $4.99 price! Rob Griffiths, Macworld, 4.5 mice - "Car Care offers [many] additional features, including financial reporting, service reminders, and mileage tracking by fuel grade." New York Times - favorite auto-management app for iPhone Car Care is fully compatible with iOS 9 to iOS 13 - purchase with confidence! Top 100 paid apps in multiple countries. Current Top 100 in its category: USA, Canada, France, Italy, Australia, Japan, and over 40 other countries! "I love this program!! It really helps me track my mileage and which gas stations work best in my car." -- iTunes Review "Everything you need in an electronic car book" -- iTunes Review "Outstanding! It has totally replaced the spiral bound notebooks in the glove boxes of my 4 cars. New improvements to the software make it even better and have fixed my complaints." --iTunes Review "...exactly what I was looking for." -- Motoring Alliance review With Car Care, you can: * track as many automobiles as you want, of any make or model * calculate fuel economy using miles, kilometers, liters, or gallons * fuel economy reports in MPG, L/100 km, MPG (UK), and Km/L * graph your fuel data * get detailed statistics, including a breakdown of how different fuel types perform in your vehicle, enabling you to make smart decisions at the pump * remember important vehicle maintenance actions Car Care reminds you when to perform any type of scheduled maintenance action to help your automobile achieve its best performance. Reminders ensure you do not forget your automobile's health. The app icon shows a small number of how many service entries are past due. Eliminate paper clutter in your life and let your iPhone take care of your vehicle's health! The iPhone will act as a little storage cubby for all your automobile's maintenance data, whether you drive a pickup truck, car, semi, motorcycle/motorbike, Ford, Toyota, Dodge, Chevy, Prius, BMW, Mustang, or any other auto.
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.