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
Brain Puzzle 3: Crazy Mind
Warning: This game may cause intermittent frustration, sudden bursts of laughter, and a strong desire to show off to your friends!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
17,965 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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Combine features and design from your favorite apps.
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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 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 Brain Puzzle 3: Crazy Mind: 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 varied puzzle types and dynamic levels.
Assumption to check: Users often find puzzle games repetitive.
Validate with people who use this workflow before building.
Hypothesis 2
Simplify purchase options and provide clear benefits.
Assumption to check: In-app purchases can be confusing.
Validate with people who use this workflow before building.
Hypothesis 3
Implement ad-free subscription or reward users for watching ads.
Assumption to check: Ads can disrupt gameplay.
Validate with people who use this workflow before building.
Hypothesis 4
Add multiplayer or challenge friends features.
Assumption to check: Limited social 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
Warning: This game may cause intermittent frustration, sudden bursts of laughter, and a strong desire to show off to your friends! Welcome to Brain Puzzle 3: Crazy Mind, the newest adventure in the Brain Puzzle series! Get ready for an exciting Brain Puzzle game experience filled with creative challenges, tricky levels, and unexpected solutions. Brain Puzzle 3 brings you a collection of fun brain puzzle challenges, clever brain puzzle levels, and unique brain puzzle adventures designed to test your creativity, logic, and problem-solving skills. Whether you love brain puzzle games, logic games, visual puzzles, or brain teasers, Crazy Mind offers endless brain puzzle challenges that will keep your mind active and entertained. Think you're smart enough? Try Brain Puzzle 3 and discover how powerful your mind really is! Game Features: Hundreds of Brain Puzzle Challenges: Explore a massive collection of brain puzzle levels, including logic puzzles, visual challenges, reaction tests, and creative thinking games. Every brain puzzle challenge is designed to surprise you and test your thinking skills. A New Generation of Brain Puzzle Games: Brain Puzzle 3 combines simple gameplay with clever designs, creating a relaxing yet challenging brain puzzle experience for players of all ages. Creative Brain Puzzle Adventure: Enjoy a variety of brain puzzle games featuring tricky questions, unexpected solutions, and imaginative puzzle designs. Each brain puzzle level brings a fresh challenge. Train Your Brain Every Day: Develop your observation, memory, logical thinking, and problem-solving abilities through fun brain puzzle games and exciting brain training challenges. Play Anytime, Anywhere: Enjoy quick brain puzzle challenges whenever you want. A few minutes of Brain Puzzle 3 gameplay can give your mind an exciting workout. Stop wasting time with endless scrolling! Join millions of puzzle fans and start your Brain Puzzle 3 adventure today! Download Brain Puzzle 3: Crazy Mind now and experience the ultimate brain puzzle game! Contact Email: [email protected] Website: https://www.smallstepinfo.com
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.
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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.
