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 fast, intuitive app allows you to analyze previously recorded videos with precision, providing detailed insights into your technique and performance
$0.99 · 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 Shot Put Analyzer: 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 data analysis features compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No social sharing options
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Basic UI design that lacks engagement
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Missing athlete profiles for performance tracking
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 fast, intuitive app allows you to analyze previously recorded videos with precision, providing detailed insights into your technique and performance. Simply tap the download icon in your saved videos list, select your video, and let the app handle the rest—copying it to local storage, playing it back instantly, and automatically analyzing it through advanced pose detection. With easy-to-enter athlete information such as height and throw distance, the app calibrates measurements for accurate real-world analysis. It converts pixel data into meaningful metrics like velocity, distance, and power output, all adjusted for your athlete's size. This personalized feedback helps you understand how your technique impacts performance, validate your power calculations, and make targeted improvements. Save your results to your personal library and track your progress over time. Key features include visual indicator markers for critical moments—power position and release point—highlighted with color-coded dots and labels for quick identification. The app’s handedness toggle ensures analysis accuracy whether you're a right or left-handed thrower, with arm highlights tailored to your throwing side. Frame-by-frame controls allow precise examination of critical moments, especially when combined with slow-motion playback. Share your results via an email that includes a comprehensive analysis report includes detailed metrics, coaching tips, and a video attachment, making it simple for coaches and athletes to review and implement improvements. How It Works: Tap Import Video The system photo picker appears showing only videos Select a video The app copies it to local storage and immediately opens it for playback The video is automatically analyzed using the same pose detection system Results are saved to the app's video library When importing a video, users see Athlete Info Screen: Height (feet and inches) Throw Distance (in feet) Optional - can skip if unknown How It Helps Analysis: Height calibration - Allows conversion from pixels to real-world measurements Distance context - Can correlate technique with actual performance Power validation - Verify if calculated power matches actual distance Personalized feedback - Adjust recommendations based on athlete size With this data, the app can: Calculate actual velocities Estimate real-world distances from angles and speed Compare power output to actual throw distance Provide height-adjusted feedback Validate if release angle + speed should produce the stated distance The data is saved with each video so you can track progress over time! Features: 1. Two Key Moment Visual Indicators Power Position (Blue dot) - Detected at the lowest knee angle (when athlete is maximally loaded) Release Point (Red dot) - Detected at maximum elbow extension (when the shot leaves the hand) 2. Handedness Settings Toggle between right-handed and left-handed throwers Settings persist between app sessions What Changes Based on Handedness: Analysis Focus: Uses the correct arm (right or left) for all angle calculations All technique feedback is based on the selected throwing side Settings Screen Also Shows: Share Button Located in the top-right corner of the video (upload icon) has multiple export options. Email Contents: 1. Detailed Feedback Clear section headers (RELEASE, POWER POSITION, LEG DRIVE, etc.) Specific explanations for each metric (not just pass/fail) Context for numbers - explains what the angles mean Priority indicators - "CRITICAL" flags for major issues 2. Actionable Coaching Tips 3. Advanced Metrics 4. Overall Assessment 5. Power Analysis
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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.