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
Animal Earth
Animal Earth is a calm, screen-time-friendly learning toy designed for young children ages 4 and up.
$6.99 · In-app purchases
PRICE
$6.99
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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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/
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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 Animal Earth: map the core Education 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
Introduce gamified learning paths and rewards for completing sections.
Assumption to check: Limited interactive content can lead to user disengagement
Validate with people who use this workflow before building.
Hypothesis 2
Add social sharing for achievements and leaderboards.
Assumption to check: Lack of social features might reduce motivation
Validate with people who use this workflow before building.
Hypothesis 3
Implement regular content updates and seasonal themes.
Assumption to check: Minimal content updates can cause boredom
Validate with people who use this workflow before building.
Hypothesis 4
Offer a free trial period to encourage user acquisition.
Assumption to check: High upfront cost may deter users
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
Animal Earth is a calm, screen-time-friendly learning toy designed for young children ages 4 and up. Children explore letters, numbers, words, and basic math by answering simple questions, and with each correct answer, a new animal joins their personal zoo. As they practice foundational skills, they watch their zoo grow with giraffes, elephants, lions, owls, and dozens more. Types of Questions • The alphabet and letter recognition • Beginning and ending sounds • Rhyming words • Uppercase and lowercase letters • Number sequences and skip counting • Basic addition and subtraction • Word opposites The Zoo Every correct answer brings a new animal to your child's world. A Zoo Journal tracks every creature they've discovered — giving children a sense of progress and something to look forward to. Designed for young learners • No ads, no in-app purchases • No timers, scores, or pressure • Progress saves automatically • 3D animals in a colorful, peaceful world • Simple enough for independent play Animal Earth is built to be a safe, open-ended toy that children can explore at their own pace.
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
Supabase
Zustand
React Navigation
TypeScript
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.
