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.
*** Brag about your Pitch Speed! ***
$1.99 · 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 Baseball Speed Radar Gun Pro: map the core Entertainment 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: Measurements can be inaccurate due to environmental factors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited historical data management options
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Basic design and UX issues
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No social sharing features
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.
*** Brag about your Pitch Speed! *** "By far the most accurate baseball radar gun on the app store." Did you ever wonder how you compare against others, or against professional athletes? Is your pitch as fast as theirs, or at least in the same ballpark? Try using Baseball Radar Gun to see exactly how fast you can throw, right down to a tenth of a mile per hour. Baseball Radar Gun is a simple and precise way to test your strength and compete with your friends. Get the answers at a glance Baseball Radar Gun uses color coding for easy identification of your speed. The entire user interface will change in color according to the speed of your throw. Pitch speeds and colors: ► 76 Over Red - Watch out, the ball is about to go supersonic! That's a powerful shot! ► 61-75 Orange - Fast! People would do well to get out of your way when you have a ball in your hand. ► 51-60 Yellow - pretty darn good! Your pitch is pretty fast, that's quite the arm you have there! ► 41-50 Green - the speed of your throw is pretty average; although it can be improved, it's nothing to be ashamed of. ► 00-40 Blue - indicating a slow pitch; that's okay, everybody has their off days. How it works Baseball Radar Gun uses a really simple method to accurately calculate the pitch speed. Simply press Start when the ball leaves the pitcher's hand, and press Stop when you see the ball land in the catcher's hand. This method of pitch speed calculation allows Baseball Radar Gun to be used on any phone, regardless of its age or camera quality. Also, it makes the pitch calculator very easy to use. Features ► Find out exactly how fast your pitch was. ► Pitch counter. Don't miss a single pitch with the counter function. ► Stopwatch. Very useful in practice. ► Pitch history. Don't write down the times yourself, Baseball Pitch Speed Radar Gun remembers the last 4 pitches. ► Color Coding, for easy identification, at a glance. ► League Presets: Little League, Major League Baseball, Fast Pitch Softball. ► Cheaper than a radar gun, and just about as effective. ► Can be used in many sports! Hockey, soccer, handball, you pick the sport and Baseball Pitch Speed Radar Gun does the measurements. Learn by doing It’s really easy and fun to use Baseball Radar Gun an indispensable tool for when you’re having fun or practicing and improving your skills! DOWNLOAD IT NOW AND TRY IT OUT FOR YOURSELF! Baseball Radar Gun is brought to your by CS Sports, A Division of CobbySoft Media Inc.
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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.