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
Cat's Time
Transform screen time into playtime for your cat
$1.99
PRICE
$1.99
No 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.
Build your own version
Build Kit
Make this idea yours
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.
What's included15 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 Cat's Time: 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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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 more categories and user-generated content.
Assumption to check: Limited content variety could lead to user boredom.
Validate with people who use this workflow before building.
Hypothesis 2
Implement offline downloads for videos and images.
Assumption to check: No offline viewing options.
Validate with people who use this workflow before building.
Hypothesis 3
Add sharing options for videos and images to social media.
Assumption to check: No social sharing features.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce user profiles with favorites and watch history.
Assumption to check: User engagement features are lacking.
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
Transform screen time into playtime for your cat. Cat's Time offers 30+ interactive games designed to keep your feline friend engaged, active, and happy. WHY CATS LOVE IT Every game features animations and sounds that trigger natural hunting instincts. Watch your cat chase butterflies, catch fish, hunt bugs, and pounce on laser dots. 30+ INTERACTIVE GAMES Flying insects: Butterflies, mosquitoes, ants, spiders, grasshoppers, cicadas Water creatures: Fish, frogs Classic favorites: Laser dots, feathers, yarn balls, mice Nature elements: Leaves, flowers, sparrows, lizards Fun objects: Colorful balls, nuts, brushes, ropes FEATURES FOR CAT OWNERS Works perfectly on iPad and iPhone with a full-screen, immersive experience. Customizable settings let you adjust the game speed, number of objects, and sound effects to match your cat's preferences. A lock button prevents accidental exits during playtime. No interrupting ads or distractions. PERFECT FOR Indoor cats needing mental stimulation Rainy days when outdoor play isn't possible Keeping cats busy while you work from home Reducing boredom and unwanted behavior Bonding time with your cat Download now and start playing. Your cat will thank you. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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
Zustand
Supabase
React Navigation
expo-video
BUILD KIT DIFFICULTY
Intermediate
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.
