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 Kumo - Weather Play
THE LITTLE CLOUD THAT CHANGES THE WORLD!
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.5
124 ratings · Top 15%
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 included18 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 Pango Kumo - Weather Play: 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 more varied mini-games and challenges to keep engagement high.
Assumption to check: Limited interactive features may not engage kids long enough.
Validate with people who use this workflow before building.
Hypothesis 2
Implement social sharing options for achievements and progress.
Assumption to check: Lack of social features for children to share achievements.
Validate with people who use this workflow before building.
Hypothesis 3
Provide clear guidance and parental controls for in-app purchases.
Assumption to check: In-app purchases may confuse younger users.
Validate with people who use this workflow before building.
Hypothesis 4
Establish a regular update schedule for new content and features.
Assumption to check: Content may not be updated frequently enough to remain engaging.
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
THE LITTLE CLOUD THAT CHANGES THE WORLD! Become Kumo, a little cloud full of magic! The world is waiting for you: make it rain, create snow, summon lightning, and bring the landscape back to life. The world is grey and sad… but thanks to you, its colors return! Grow trees, create snowy mountains, break rocks with lightning, and watch nature transform with every gentle gesture. Pango Kumo invites children to discover weather and the water cycle through play. They observe, experiment, and immediately see the effects of their actions: rain, snow, evaporation, plant growth, landscape transformation. A simple and intuitive way to understand nature, perfect from age 3. A PANGO CREATION For over 15 years, Pango has been creating smart, accessible, and caring experiences, enjoyed by more than 15 million children worldwide. With Pango Kumo, your child explores nature, understands weather phenomena, and plays with the elements in a joyful universe. WHY DO PARENTS LOVE PANGO KUMO? - Introduces the water cycle in a simple and playful way - Encourages free exploration and natural curiosity - Develops fine motor skills and observation - Interactive world: rain, snow, lightning, evaporation, vegetation - No stress, no challenges, no time limits - A vast world that changes with every play session - Perfect for children aged 3 and up A 100% SAFE GAME FOR KIDS • No in-app purchases • No ads • No external links • Built-in parental controls • Compliant with children’s data protection standards PANGO VALUES: NATURE, LEARNING, DISCOVERY At Pango, we create games designed to encourage curiosity and help children understand the world. Simple, caring, and calming experiences that support every child at their own pace. Need help? A question? [email protected] More info: www.studio-pango.com DOWNLOAD PANGO KUMO and let your child play with the weather: MAKE IT RAIN, MAKE IT SNOW… AND WATCH LIFE GROW!
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
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.
