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
Wobbly Life
Grandma has kicked you out into the big wide Wobbly world demanding you go and GET A JOB! She would be so proud if you could earn some money and get your own house one day!
$9.99
OVERALL US RANK
#62
Paid · all categories
REVENUE (Est)
$168K/mo
$95K - $242K
RATING
★ 4.8
1,813 ratings · Top 5%
Evidence scope: #62 is the current overall US Paid chart position. 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 included15 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 Wobbly Life: 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
Introduce a wider range of customization features like outfits and accessories.
Assumption to check: Limited character customization options
Validate with people who use this workflow before building.
Hypothesis 2
Add randomized and seasonal challenges to keep gameplay fresh.
Assumption to check: Repetitive challenges
Validate with people who use this workflow before building.
Hypothesis 3
Implement multiplayer features and leaderboards to enhance competition.
Assumption to check: Lack of social features
Validate with people who use this workflow before building.
Hypothesis 4
Create a comprehensive onboarding process to guide new users through gameplay.
Assumption to check: Minimal tutorial for new players
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
Grandma has kicked you out into the big wide Wobbly world demanding you go and GET A JOB! She would be so proud if you could earn some money and get your own house one day! Wobbly Life is a physics-based open-world multiplayer sandbox game where you can explore, complete jobs, earn money, drive vehicles, own houses, collect pets and embark on hilarious adventures together. Play with all of your friends across ANY mobile platform and explore a vibrant world packed with secrets, missions, mini-games, vehicles and surprises. If you enjoy family-friendly sandbox games, multiplayer adventures, life simulation games and open-world exploration, you’ll love Wobbly Life. EXPLORE A HUGE OPEN WORLD • Explore towns, mountains, islands, caves and hidden locations • Complete story missions to unlock unique rewards • Solve mysteries and uncover secrets across Wobbly Island • Train to become a Wobbly Astronaut and launch into space Almost everything in Wobbly Life is interactive, creating endless opportunities for exploration, experimentation and fun. COMPLETE JOBS & EARN MONEY Grandma wants you to get a job! Choose from 20+ unique jobs and earn money to unlock new content. Every job offers unique challenges, rewards and opportunities to build your Wobbly fortune. CUSTOMIZE YOUR CHARACTER, HOUSE & VEHICLES Spend your hard-earned money on exciting upgrades and unlockables. • Choose from 500+ clothing items • Collect and care for pets • Purchase houses ranging from small cabins to luxury mansions • Unlock and drive 90+ vehicles • Personalize your Wobbly character and lifestyle CHALLENGE FRIENDS & CLIMB LEADERBOARDS Compete against players around the world or challenge friends directly to see who can earn the highest scores, complete the most jobs and set the fastest race times. Choose from the Richest Wobbler, Job Master, Race King and Wobble Run Champion leaderboard, all available in the iOS Games Center leaderboard. JOIN OUR WOBBLY COMMUNITY Join us on Discord and check out the amazing Wobbly community! Download Wobbly Life today and discover one of the most fun, creative and adventure-filled multiplayer sandbox games available.
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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
Zustand
@react-navigation/native
react-native-reanimated
expo-asset
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.
