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.
Most pitchers have no idea what they actually throw
$4.99 · 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 Pitchworks: 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: Lack of user reviews and community support
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited training drill options
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Potential confusion in navigating analytics
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Subscription model may deter 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.
Most pitchers have no idea what they actually throw. They know their fastball "feels" fast and their curveball "usually" works. But feelings don't reveal why the third inning always falls apart, or whether that new changeup grip is actually improving command. Data does. Pitchworks captures what happens on every pitch (velocity, location, outcome) and transforms it into insights you can act on. Get answers between innings, no statistics degree required. WHAT YOU GET During the game: A scoring interface designed for the chaos of live baseball. Four taps to log a pitch. No internet required. Works in the dugout, behind the backstop, or in the bullpen. After the session: Generate charts showing velocity trends, zone accuracy, pitch mix, and outcome breakdowns. See at a glance whether your pitcher is locating or just surviving. Over time: Compare today's outing to last month's. Track progress across a season. Identify the patterns that paper logs could never reveal, like which counts lead to walks, or how velocity drops after 40 pitches. For the conversation: Send PDF reports to players, parents, or other coaches with a single tap. Every session becomes documented evidence of work put in and progress made. BUILT FOR REALITY High school baseball happens on patchy fields with inconsistent Wi-Fi and limited time between games. Pitchworks works offline, requires no account setup, and stays out of your way so you can focus on your team.
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.