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
Poppy Playtime Chapter 2
---The Train Station---
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.5
5,458 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 included19 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 Poppy Playtime Chapter 2: map the core Games 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 adjustable difficulty levels to cater to various player skills.
Assumption to check: Players find puzzles to be too complex or frustrating.
Validate with people who use this workflow before building.
Hypothesis 2
Implement clearer item descriptions and a better tutorial on using in-app purchases.
Assumption to check: In-app purchases can be confusing or feel mandatory.
Validate with people who use this workflow before building.
Hypothesis 3
Prioritize extensive testing and user feedback loops to enhance stability.
Assumption to check: Some users report bugs or crashes during gameplay.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce regular content updates and seasonal events to keep players engaged.
Assumption to check: Limited content updates leading to stale gameplay.
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 Train Station--- Explore one of Playtime Co.'s most popular locations, the Game Station! This Train Station is more than just a pitstop... there's games, a playground, and much, much more. Even better- the train provides a straight shot right out of the factory. ---New Toys--- This factory is filled with remnants of a crooked past- All you need to do is go deeper. Let's ask Bunzo Bunny. Or perhaps PJ Pug-a-pillar has some ideas. Or maybe... Mommy knows? ---The Green Hand--- The all-new Green Hand has been introduced into the GrabPack family! You can now carry power with you, remotely! That's not all... you can grapple now too! Innovation has done it again. • Transfer power without the confines of a wire! • Grab onto pipes and swing across missing flooring. • Fly! Kind of- you can grapple straight up, more accurately. Playtime's not over yet- stick around...
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
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expo-three
BUILD KIT DIFFICULTY
Advanced
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.
