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
Goblin Sushi
Goblin Sushi mixes roguelike elements with restaurant simulation madness; and of course you are a goblin – rolling up Sushi – for goblins.
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
250 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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
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.
JavaScript is required to complete mailbox verification.
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 Goblin Sushi: map the core Games workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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
Implement clear pricing and benefits for in-app purchases.
Assumption to check: Monetization can be unclear to users
Validate with people who use this workflow before building.
Hypothesis 2
Add sound effects and animations for slicing actions.
Assumption to check: Lack of engaging user feedback during gameplay
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate social sharing and friend leaderboards.
Assumption to check: Limited social features
Validate with people who use this workflow before building.
Hypothesis 4
Introduce different game modes and challenges.
Assumption to check: Potential repetitiveness in 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
Goblin Sushi mixes roguelike elements with restaurant simulation madness; and of course you are a goblin – rolling up Sushi – for goblins. MAKE SUSHI… FAST! Roll a huge selection of delicious looking sushi. Made from everyday goblin cave ingredients: caterpillars, slugs, chicken heads, and freshly blended toads. YOUR CUSTOMERS Goblins! They're pickier and more impatient than you might think. And they come in all varieties: Granny Goblin, Trash Goblin, Ghost Goblin, Poop Goblin and many more… UPGRADE EVERYTHING Improve your restaurant, the menu, and above all, your cash flow! Tinker with powerful sushi combos, turbocharge your rice cooker, or just screw everything and serve exquisite poop. RENT IS DUE Even as a goblin entrepreneur, your biggest enemy is your landlord. Tenant protection was never invented, so rent is due every two minutes and rises at an inflationary rate. Pay off your landlord. Until the very end… SHOW OFF! Present your astronomical sales figures, your best-selling sushi dishes, and your oh so clever combos. FEATURES - Ultimate goblin sushi chef experience. - Big range of fancy sushi with goblin-tastic ingredients. - Live out your restaurant power fantasy. - Overcome inflationary rent prices. - Stress inducing carpal tunnel gameplay
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
react-native-reanimated
expo-animations
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.
