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
Super Slime Simulator
Create super realistic slime and play with it on your mobile device
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
401,452 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.
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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/
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 Super Slime Simulator: map the core Lifestyle 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
Provide extensive texture and color combinations.
Assumption to check: Limited customization options for slime textures.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a clear paywall and trial features.
Assumption to check: In-app purchases for premium features can be confusing.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize image loading and caching.
Assumption to check: Performance issues when loading many slimes.
Validate with people who use this workflow before building.
Hypothesis 4
Add options for sharing created slimes on social media.
Assumption to check: Lack of social sharing features.
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
Create super realistic slime and play with it on your mobile device. Relax your mind and discover our unique ASMR experience. Stretch your slime, squish it, knead it, pop it - just like you would with real slime or putty. Enjoy that oddly satisfying feeling right from your phone or tablet. With a huge selection of slimes types, decorations and colors to create with, this app is for slime beginners and pro slime experts, young and old, boys and girls. You can even share the experience by sending slime gifts for your friends to enjoy on their own devices. App features: - Play with your simulated slime right on your phone. - Realistic slime simulation: Stretch it, squish it, knead it, pop it - just like real slime! - Relieve stress and discover our one of a kind ASMR experience. - DIY. Create your very own slime. Choose from a huge collection of materials, colors and add-ins: add glitter, jelly cubes and tens of other amazing decorations. - Rich slime gallery: Clear, milky, metallic, jiggly and many more. - Each slime boasts a unique texture, sound and behavior. - Fun area: Play Lu-lu's Slime Quest, guessing games, turn your photos into slime (greenscreen effect) & experience slime painting. - Send slime gifts to your friends. Hit the gift button and send gifts that your friends can load into their devices and play with! - Satisfying 3D Sounds: Turn up the volume and listen to your slime squishing as you touch it. For best experience, use a headphones set. - Shake it till you make it: Shake your phone to undo stretches. - Share your creations! Hit the share button and send images of your slimes to your friends. FOLLOW US at Instagram @superslimesimulator
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
Zustand
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react-native-gesture-handler
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.
