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.
This app using data about your current chassis setup, cold and hot tyre pressures, tyre temperatures, behaviour in corners, weather and race track conditions will give you some recommendations about how to adjust your...
$7.99 · 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.
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Combine features and design from your favorite apps.
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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 Kart Chassis Setup PRO: map the core Sports 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 setups.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Inconsistent data tracking accuracy.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of community features for sharing setups.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: High one-time price without trial.
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.
This app using data about your current chassis setup, cold and hot tyre pressures, tyre temperatures, behaviour in corners, weather and race track conditions will give you some recommendations about how to adjust your chassis in order to resolve any set up problem which you have. For each advice, you'll find an explanation about the adjustment. Each explanation contains pictures to be more understandable The application is valid for all types of karts and for all karting classes (senior, cadet, junior). It's usefull for experienced or novice drivers. For experienced it'll be a second opinion about what's wrong with the chassis setup, and for novices it will teach them the secrets of the chassis adjustments and chassis setup The application contains four tabs, which are described next: • Chassis: on this tab, you can enter data on the configuration of your go-kart chassis, tires, location, weather, engine, gearbox, driver and ballast. For example: - front and rear height - front and rear width - front and rear hub length - front hub spacers - front and rear torsion bars - Toe In / Toe Out - Ackerman - Camber - Caster - front and rear bumpers state - rear axle stiffnes - rear bearings - sidepods state - 4th torsion bar - struts of seat - rain meister - seat type - seat size - seat position - tyre type - material of wheels - driver weight - ballast positions and weight - and more... • History: this tab contains the history of all your settings of go-cart chassis. If you something in your chassis setup or change the weather, race track, conditions - new settings data automatically will be saved in the history • Analysis: this tab contains three types of chassis behavior analysis - Driving analysis: you'll have to inform about how the driver feels the behaviour of the kart in corners. In section "Behaviour in corners" you'll have to enter information about what the driver is feeling of a go-kart chassis behavior (for example - understeering at entry of corners). These are the most important information used by the application to calculate the advices. You also should enter information about race track is clockwise or anti-clockwise, current weather and race-track conditions (automatic weather detection via the Internet is available). All elements are taking into consideration for calculations - Pressure analysis: you have to inform about the hot and cold pressures of each tyre, matherial of wheels (aluminium or magnesium), target tyre temperature, current weather and race-track conditions - Temperature analysis: you have to set in this screen the information about hot tyre temperatures in the inside, middle and outside of the patch of each tyre, matherial of wheels (aluminium or magnesium), target tyre temperature, current weather and race-track conditions - Temperature: you can set in this screen the information about hot tyre temperatures in the inside, middle and outside of the working surface Then click on the "Analysis" button and application will show you some recommendations related on which adjustments you can do to solve any problem in the chassis setup that you can be suffering. A screen with detailed information about the adjustment will be shown. For example: "Insrease front track width" or "Modify tyres pressures" (how much you should adjust your pressures) or change your driving style • Tools: on this tab, you can find useful karting utilities. Fuel calculator, for perfect fuel mixing. Weight and balance to get the perfect go-kart weight distribution. Air density and density altitude for carburetor setup (JETTING). And much more. The app let you use different measure units: ºC y ºF for temperatures, PSI and BAR for pressures, lb and kg for weights, millimeters and inches for length, mb, hPa, mmHg, inHg for atmospheric pressure, meters and foots for altitude, gallons, oz, ml and liters for volume.
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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.