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
Jigmerge™ Puzzle
smart jigsaw fun: for every age, every moment!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
599 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 included16 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 Jigmerge™ Puzzle: 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 new puzzle themes and daily updates.
Assumption to check: Limited variety of puzzles can make gameplay repetitive.
Validate with people who use this workflow before building.
Hypothesis 2
Implement fair monetization with rewards for daily logins.
Assumption to check: In-app purchases can frustrate users if not balanced.
Validate with people who use this workflow before building.
Hypothesis 3
Add multiplayer modes or leaderboards.
Assumption to check: Lack of social features may reduce engagement.
Validate with people who use this workflow before building.
Hypothesis 4
Offer a premium version with ad-free experience.
Assumption to check: Ads can disrupt gameplay flow.
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
smart jigsaw fun: for every age, every moment! rediscover the joy of jigsaw puzzles with a creative, strategic twist! become a master of piece-matching as you turn scattered shape fragments into stunning complete images—all while sharpening your mind and exploring the world. whether you’re killing time on the commute, relaxing at home, or looking for a brain-boosting activity for the whole family, jigmerge puzzles delivers endless fun tailored just for you! game features ● innovative jigsaw gameplay: observe clues in shape fragments, merge adjacent pieces into larger blocks, and complete beautiful images—blocks can split and recombine for extra challenge, so plan your moves wisely! ● 20,000+ handpicked images: dive into a vast collection spanning portraits, cute animals, breathtaking landscapes, incredible architecture, elegant art, and more—something for every taste! ● daily challenges & monthly rewards: keep the excitement going with daily puzzles, and unlock exclusive monthly prizes that celebrate your progress! ● world exploration & culture: collect famous landmarks from across the globe, and learn fascinating facts about local customs and cultures as you play! ● on-the-go optimized: designed specifically for mobile life—enjoy a quick puzzle session anytime, anywhere, no matter where your day takes you! ● senior-friendly & brain-boosting: gentle gameplay that’s easy for older players to navigate, while helping strengthen cognitive function and keep the brain active and sharp. why you’ll love jigmerge puzzles ● a unique take on classic jigsaw puzzles that blends strategy, observation, and relaxation! ● stunning visuals and smooth animations that bring every puzzle to life. ● regular updates with fresh images, new events, and exciting features to keep you engaged. ● perfect for all ages—from kids learning problem-solving to seniors seeking mental stimulation, and casual players craving relaxation. love jigmerge puzzles? jigmerge puzzles is free to play and available on both mobile platforms worldwide. need help? contact player support through the game’s settings > help and support. a wi-fi or internet connection is not required to play, but it is needed when fetching new contents. download now and let jigmerge puzzles be your go-to for relaxing moments, anytime you need them!
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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
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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.
