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
Jigsaw Puzzle Art: Relax Book
Jigsaw Puzzle Art: Relax Book
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
3,547 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/
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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 Jigsaw Puzzle Art: Relax Book: 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
Implement a robust search and filter feature.
Assumption to check: Users may find it difficult to locate specific puzzles or categories.
Validate with people who use this workflow before building.
Hypothesis 2
Optimize image loading and caching.
Assumption to check: Sometimes the app can lag with high-resolution images.
Validate with people who use this workflow before building.
Hypothesis 3
Add social sharing options and leaderboards.
Assumption to check: Limited social features for sharing completed puzzles.
Validate with people who use this workflow before building.
Hypothesis 4
Provide clear descriptions and visual previews of premium content.
Assumption to check: In-app purchases can be confusing regarding what is offered.
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
Jigsaw Puzzle Art: Relax Book. Find peace and focus in every puzzle. Jigsaw Puzzle Art: Relax Book is a calm and beautifully designed picture puzzle game where you can slow down, relax, and enjoy the simple pleasure of fitting pieces together. Each puzzle is a piece of art — soothing, satisfying, and made to bring you moments of quiet joy. Relax and Reconnect Through Art - Relax and Unwind No timers. No pressure. Just you and your puzzle. Take your time finding the right pieces, feel the satisfying click when they fit, and watch the image slowly come to life. It’s the perfect way to relax after a long day. - Beautiful Artwork Explore a variety of stunning pictures — from nature and animals to cozy interiors and abstract scenes. Each puzzle tells its own little story, bringing calm and beauty to your screen. - Simple, Smooth Controls Drag and place pieces with ease. Designed for everyone, this puzzle game for adults offers a smooth and intuitive experience you can enjoy anytime. - Play Offline Anywhere Enjoy puzzles anytime, even without the internet. Perfect for travel, short breaks, or quiet moments at home. - Gentle Brain Challenge Puzzles aren’t just relaxing — they’re good for your mind. Each completed picture improves focus and memory while keeping you engaged and stress-free. FEATURES - A wide selection of free jigsaw puzzles - Relaxing sounds and beautiful visuals - Smooth drag-and-drop gameplay - Works greatly offline - A mindful and relaxing brain game experience If you’re looking for a peaceful escape or just a creative break in your day, Jigsaw Puzzle Art: Relax Book is your great choice. Take a moment for yourself — piece by piece, your calm is waiting.
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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
BUILD KIT DIFFICULTY
Starter
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.
