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.
INFINITE ZENSAW - Shikaku Puzzle Game
$0.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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.
JavaScript is required to complete mailbox verification.
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for INFINITE ZENSAW: map the core Entertainment workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Affiliate link: CloneChart may earn a commission at no extra cost
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
Assumption to check: Limited content variety leading to user boredom
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of social features for sharing experiences
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Difficulty in discovering new soundscapes
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: High subscription cost for premium features
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
INFINITE ZENSAW - Shikaku Puzzle Game Discover the ancient Japanese logic puzzle reimagined for endless play. Infinite Zensaw challenges your mind with Shikaku - a deceptively simple yet deeply satisfying number-grid puzzle where you divide a board into rectangles, each containing exactly one number equal to its area. No timers forcing you to rush. No ads interrupting your flow. No accounts to create. Just pure, focused puzzle-solving at your own pace. -- HOW TO PLAY -- * Each puzzle presents a grid filled with numbers. * Drag to draw rectangles around the numbers. * Every rectangle's area must match its number exactly. * Every cell in the grid must be covered - no gaps, no overlaps. * When the grid is perfectly divided, the puzzle is solved. It sounds simple. It becomes beautifully complex. -- INFINITE PUZZLES -- Never run out of challenges. Infinite Zensaw includes a built-in puzzle generator that creates a brand-new, valid Shikaku puzzle every time you tap Shuffle - verified solvable, perfectly balanced, and unique every time. Solve one, generate another. There is no finish line. -- ZEN FEATURES -- * Seasonal themes - Winter, Spring, Summer, and Fall color palettes * Light and Dark mode - switch instantly to match your environment * Optional timer - track your speed or play without pressure * Gentle sound effects - harmonic chimes that reward progress * Grid rotation - solve puzzles from a new angle * Reset button - optional on-screen reset for quick restarts * Offline play - every puzzle works without an internet connection -- NO ADS. NO TRACKING. NO ACCOUNTS. -- Infinite Zensaw collects zero personal information. There are no advertising SDKs, no behavioral tracking, no analytics networks, and no data transmitted off your device. Your progress and preferences are stored locally only - on your device, under your control. This app is COPPA compliant and safe for users of all ages, including children under 13. -- ACCESSIBILITY -- Infinite Zensaw is designed to meet WCAG 2.1 Level AA accessibility standards: * Full keyboard navigation - all controls reachable via Tab and Enter * Screen reader compatible - descriptive ARIA labels on all interactive elements * Reduced motion support - animations minimized when system preference is set * High contrast mode compatibility * All touch targets meet the 44x44pt minimum size requirement * Skip-to-content link for assistive technology users -- WHO IS THIS FOR? -- Infinite Zensaw is for anyone who loves quiet, focused brain games. Whether you're a lifelong logic puzzle fan, a Sudoku player looking for something new, or someone who just wants a calming daily challenge - Infinite Zensaw meets you where you are. Great for: * Logic and math puzzle enthusiasts * Fans of Sudoku, Nonograms, Picross, and Kakuro * People seeking a mindful, screen-time alternative * Students building spatial reasoning and pattern recognition skills * Anyone who wants a puzzle game that respects their attention -- 99 Cents -- Everything in Infinite Zensaw is game play forever. Download Infinite Zensaw and find your flow.
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.