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
Geometry Dash
Jump and fly your way through danger in this rhythm-based action platformer!
$3.99 · In-app purchases
OVERALL US RANK
#6
Paid · all categories
REVENUE (Est)
$1.2M/mo
$732K - $1.7M
RATING
★ 4.6
272,615 ratings · Top 15%
Evidence scope: #6 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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
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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 Geometry Dash: 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
Implement a difficulty selection feature to help players choose levels suited to their skill level.
Assumption to check: Some users find levels too difficult or frustrating.
Validate with people who use this workflow before building.
Hypothesis 2
Add user-generated levels to keep content fresh and engaging.
Assumption to check: Limited levels can lead to boredom.
Validate with people who use this workflow before building.
Hypothesis 3
Clearly explain what each purchase offers and ensure intuitive navigation to the shop.
Assumption to check: In-app purchases can be confusing.
Validate with people who use this workflow before building.
Hypothesis 4
Focus on thorough testing and provide regular updates to improve stability.
Assumption to check: Occasional bugs during 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
Jump and fly your way through danger in this rhythm-based action platformer! "Frustratingly wonderful" - Kotaku "Geometry Dash provides all of the challenge expected from an “impossible” game while also making it more accessible to newcomers." - 148Apps "Geometry Dash is a fast-paced platformer that will leave you screaming in frustration, but you’ll keep coming back for more." - AppAdvice Prepare for a near impossible challenge in the world of Geometry Dash. Push your skills to the limit as you jump, fly and flip your way through dangerous passages and spiky obstacles. Simple one touch game play with lots of levels that will keep you entertained for hours! Game Features • Rhythm-based Action Platforming! • Lots of levels with unique soundtracks! • Build and share your own levels using the level editor! • Unlock new icons and colors to customize your character! • Fly rockets, flip gravity and much more! • Use practice mode to sharpen your skills! • Game Center achievements with rewards! • Challenge yourself with the near impossible! Contact: [email protected]
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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react-navigation
expo-ads-admob
zustand
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.
