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.
***Designed by sports scientists, trusted by elite athletes***
$14.99 · 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.
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Combine features and design from your favorite apps.
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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 COD Timer: 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 customization options for timers
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No social sharing features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of insights or analytics
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: High initial purchase price
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.
***Designed by sports scientists, trusted by elite athletes*** ***Validated using professional timing gates*** COD Timer is the first scientifically validated app to measure change of direction performance. Designed by the creator of widely used apps in pro sports like My Jump 2 or My Lift, COD Timer allows you to measure meaningful parameters of some of the most popular COD tests, like velocity, contact time, leg asymmetry or COD deficit. Just record your athlete with your iPhone or iPad doing the test and analyze the video, without the need of additional equipment. Simple and accurate! COD Timer has great features that will help you to monitor change of direction performance like: *Includes some of the most used and validated COD tests, like the 5-0-5, Illinois Agility Test, V-Cut and 5+5. *Measure important variables as time, contact phases, COD deficit or leg asymmetry. Scientifically validated! *Create as many teams as you want, and as many athletes in each team as you want! *Save the results into the user’s profile and register the evolution over time. You can even get alerts depending on how the scores compares to the athlete’s baseline. Very useful to detect readiness to train and compete! *Export your whole data to a CSV file that can be opened with Excel and similar spreadsheets apps COD Timer, monitor change of direction performance just with your iPhone, iPad or Mac!
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.