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.
Spin is reimagining the way people and cities flow by offering shared electric micro-mobility options as an alternative to traditional forms of urban transport
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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 Spin — Electric Scooters: map the core Travel 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: User can struggle to find available scooters during peak times.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Scooter maintenance issues not reported effectively.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Payment processing delays can frustrate users.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited rental duration options may deter some users.
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.
Spin is reimagining the way people and cities flow by offering shared electric micro-mobility options as an alternative to traditional forms of urban transport. We are committed to being the best possible partner for cities while building the safest, most equitable, and most sustainable mobility solution for the communities we serve. Just download our easy-to-use, reliable app for access to thousands of shared scooters and bikes across the country. Spin scooters and bikes are emissions-free, so you’ll also help keep the air fresh every time you ride. How to Take a Spin: - Open the app to find the nearest Spin scooter or bike. - Unlock your Spin by scanning the QR code or by entering its ID. - Ride safely to your destination, using bike lanes where available. - Park responsibly, avoiding pedestrian right of ways, building entrances, and wheelchair ramps. Want Spin scooter or bike-sharing where you live for your commute? Have feedback on your ride? Contact [email protected], or find more info at www.spin.app California Privacy Notice: https://www.spin.app/policies/ca-privacy-policy Terms of Use: https://www.spin.app/policies/terms-us
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.