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
Suika Game Planet
Rotate, aim, and go for the Watermelon!
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.9
9 ratings · Top 50%
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
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A product spec, screen plans, and build steps for your coding agent.
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What's included16 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 Suika Game Planet: 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
Incorporate daily challenges and rewards to keep players engaged.
Assumption to check: Lack of engaging content can lead to quick boredom.
Validate with people who use this workflow before building.
Hypothesis 2
Offer more value in free gameplay to encourage purchases.
Assumption to check: In-app purchases may feel intrusive.
Validate with people who use this workflow before building.
Hypothesis 3
Add social sharing options and friend leaderboards.
Assumption to check: Limited social features for sharing progress.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce varied game modes and seasonal events.
Assumption to check: Repetitive gameplay can diminish interest.
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
Rotate, aim, and go for the Watermelon! Suika Game Planet, the latest entry in the Suika Game series (boasting over 13 million downloads!), has arrived with an all-new space setting! ● Game Overview Drop fruit from anywhere you like around the orbiting character, Poppy, and collide matching types to make them “evolve” into larger ones, aiming to create a watermelon(=Suika) and achieve a high score. ● New Circular Stage Experience a 360° stage! Rotate all the way around to drop your fruit exactly where you want from any angle. ● Don't Miss ""Super Evolution"" time Evolving many fruits in a row triggers ""Super Evolution"" time!"" The excitement reaches its peak with special effects. Keep the ""Super Evolution"" going by evolving another fruit before the light completes its circle. Use the bonus points to skyrocket your score! ● Additional Features Rankings: Compete for the best score with players from all over the world. Customization: Personalize your game screen with various designs to suit your style. Play the evolved Suika Game Planet anytime, anywhere—at home or on the go! ＜Official Sites / SNS＞ ・Suika Game Official Website https://suikagame.jp/ ・Suika Game Planet Introduction Page https://suikagame.jp/planet/ ・Official X (formerly Twitter) https://x.com/SuikaGame_jp ・Official Instagram https://www.instagram.com/suikagame_jp/ ・Official YouTube https://www.youtube.com/@suikagame_jp
Written user reviews are not shown here. Check current App Store reviews >
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
react-navigation
Zustand
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.
