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
Lava Lamp MC
Lava Lamp MC - Symphony of Bubbles
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
23 ratings · Top 5%
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 included17 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 Lava Lamp MC: map the core Entertainment 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
Allow users to create their own lamp designs.
Assumption to check: Limited customization options for lamp designs
Validate with people who use this workflow before building.
Hypothesis 2
Integrate social sharing to showcase designs.
Assumption to check: No social sharing features
Validate with people who use this workflow before building.
Hypothesis 3
Provide a clear explanation of what each purchase unlocks.
Assumption to check: In-app purchases may be confusing
Validate with people who use this workflow before building.
Hypothesis 4
Add soothing sound effects to enhance the experience.
Assumption to check: Lack of sound effects can make it feel less immersive
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
Lava Lamp MC - Symphony of Bubbles Immerse yourself in the mesmerizing world of Lava Lamp MC, the cutting-edge iOS app that revives the iconic lava lamp experience for your handheld device. Animated by the groundbreaking Marching Cubes algorithm, originally developed by William E. Lorensen and Harvey E. Cline in 1987, this app brings to life a vibrant and fluid lava lamp simulation that is not only visually stunning but also richly customizable. Key Features: Dynamic Lava Lamp Simulation: Witness the fluid, ever-changing allure of a digital lava lamp that molds to your preferences, powered by the legendary Marching Cubes algorithm. Highly Customizable Experience: Engage with a broad spectrum of settings to make the lava lamp your own. Adjust everything from the "lava's" viscosity to the color palette for a truly personalized touch. Advanced Material Management: A sophisticated function manages an array of materials, allowing for a diverse selection of visual effects. Opt from textures like Wax, Rainbow, Quicksilver (akin to liquid metal), Liquid Glass, and more to tailor your aesthetic. Interactive UI Controls: Hone your experience with user-friendly sliders controlling color, saturation, brightness, and beyond. Tinker with skybox options, blob configurations, and particle behavior to claim your lava lamp as uniquely yours. Save and Reset with Ease: Your personalized settings are always preserved, ready for your return. And if you're in the mood for a clean slate, resetting to the default settings is just a tap away. Lava Lamp MC is the ideal choice for those seeking a blend of relaxation, creativity, or a touch of nostalgia. Whether you're reminiscing over classic lava lamps, passionate about avant-garde animations, or simply eager to customize your device in a novel way, Lava Lamp MC delivers an engaging and customizable experience. Download Lava Lamp MC today and unleash your creativity! Developed by Philipp Roger, dedicated indie software developer
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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
Supabase
zustand
react-native-reanimated
@react-navigation/native
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.
