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
Pango Zoo - Animal Care
TAKE CARE OF THE ANIMALS
$6.99 · In-app purchases
PRICE
$6.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.1
18 ratings · Top 30%
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's included17 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 Pango Zoo - Animal Care: 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
Offer more animals and care activities to enhance engagement.
Assumption to check: Limited animal selection can become repetitive for users
Validate with people who use this workflow before building.
Hypothesis 2
Introduce varying difficulty levels for mini-games.
Assumption to check: Some mini-games may not be challenging enough
Validate with people who use this workflow before building.
Hypothesis 3
Implement clearer prompts and benefits for in-app purchases.
Assumption to check: In-app purchase options are not clearly communicated
Validate with people who use this workflow before building.
Hypothesis 4
Optimize app performance for a wider range of devices.
Assumption to check: Occasional performance issues on lower-end devices
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
TAKE CARE OF THE ANIMALS Welcome to Pango Zoo! Step into a lively zoo full of lovable animals. Observe, help, care for them, and solve small problems so every animal feels happy and safe. Energetic penguins, a grumpy tiger, a funny elephant… Each adventure brings new situations to explore. Feed hungry animals, cure little colds, help them wash... Every action triggers fun and surprising reactions. Pango Zoo offers 5 interactive adventures, each with its own animals, gentle challenges, and small missions to complete. Children observe, think, and act naturally, simply for the joy of playing and helping. Pango Zoo is an exploration and care game that nurtures curiosity, empathy, and problem-solving skills. A warm and reassuring experience, perfectly designed for children aged 3 to 6. A PANGO CREATION For over 15 years, Pango games have supported children in their discoveries through caring, accessible, and stress-free experiences. Pango Zoo continues this tradition with an interactive game that encourages children to observe, understand, and take care of the world around them. WHY DO PARENTS LOVE PANGO ZOO? - Encourages empathy and caring skills - Promotes observation and simple problem solving - 5 varied adventures to explore - A gentle, joyful, and interactive world - Rich animations and expressive characters - No stress, no scores, play at your own pace - Ideal for children aged 3 to 6 A 100 % SAFE GAME FOR CHILDREN • No in-app purchases • No advertising • No external links • Built-in parental controls • Compliant with children’s data protection regulations PANGO VALUES: EMPATHY, CURIOSITY, KINDNESS At Pango, we create child-centered worlds where learning happens through play, observation, and caring for others. Gentle and enriching games that help children grow with confidence. Need help? A question? [email protected] More information: www.studio-pango.com DOWNLOAD PANGO ZOO and let your child take care of the animals: A ZOO TO EXPLORE, FRIENDS TO PROTECT!
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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
React Native Reanimated
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.
