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
Pitchman Radar Gun
Pitchman lets you accurately measure pitch speed with the camera - it's the only radar gun app to give true MPH.
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 included17 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 Pitchman Radar Gun: 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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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
Add features for detailed performance metrics and suggestions.
Assumption to check: Limited functionality for pitch analysis and feedback.
Validate with people who use this workflow before building.
Hypothesis 2
Enable sharing of scores on social media.
Assumption to check: No social sharing options for recorded speeds.
Validate with people who use this workflow before building.
Hypothesis 3
Implement user accounts to save history across devices.
Assumption to check: Lack of user accounts for data persistence.
Validate with people who use this workflow before building.
Hypothesis 4
Create an onboarding experience to guide new users.
Assumption to check: No tutorial or help section for new users.
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
Pitchman lets you accurately measure pitch speed with the camera - it's the only radar gun app to give true MPH. Features include: - Capture high frame rate video (240 FPS) - Easily step through individual video frames to mark the precise start and end point of a pitch. - A magnifying lens enabling you to zoom in on any portion of a video - perfect for videos shot from the bleachers or behind a backstop. - Adjust the mound distance to level of play (little league, softball, college, MLB), even after editing. - Calculates average and peak pitch speed with up to 1 MPH accuracy! - Export and share your video to your camera roll or email it to others in FULL RES HD - no loss of quality. - Awesome special effects include slow motion playback during pitch, ultra-fast pitch timer, ball-tracking tracers, and pitch stats fading in at the end of the video. - Add pitcher name, team and pitch type for display with your pitch speed. Share a freeze frame photo of your pitch with MPH stats via Facebook or Twitter. Pitchman was conceived of and designed by a Dad and little league coach to use with his kids and developed with attention to detail and a genuine passion for the game. Suggestions are always welcome and your satisfaction is guaranteed.
Written user reviews are not shown here. Check current App Store reviews >
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
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@react-native-community/slider
expo-permissions
BUILD KIT DIFFICULTY
Advanced
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.
