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.
What’s scarier than a lion’s roar? Why, a dinosaur roar of course!
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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 T-Rex Sounds: 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: Limited sound selection and variety
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: User interface is basic and not engaging
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchase process can be confusing
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of 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.
What’s scarier than a lion’s roar? Why, a dinosaur roar of course! Tyrannosaurus Rex (or T-Rex, as his friends like to call him) was a carnivorous dinosaur living more than 65 million years ago, during the Cretaceous period (not the Jurassic period, as many people think). Since humans weren’t around when T-Rex roamed the Earth, we are left to speculate what this ancient beast really sounded like. By studying what we know of T-Rex through fossils, and comparing that to what we know of modern animal sounds, we can make some pretty good guesses at T-Rex’s vocal habits. From a bone-chilling roar to a snarl, growl or scream, these sounds are not the kind you want to hear when hiking through the forest, especially if you’re a triceratops or other tasty T-Rex snack! Whether you want to learn about dinosaur sounds, or simply scare your friends, you’ll love these T-Rex sound recordings!
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.