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 Puzzles - Puzzle Games
get an engaging experience with one of the world’s most-downloaded jigsaw puzzle games from a top developer! jigsaw puzzles is an addictive, easy to play game with over 13,000 free cute hd pictures
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
1,068,435 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 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/
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 Jigsaw Puzzles - Puzzle Games: 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
Provide a broader range of themes and regular updates to keep content fresh.
Assumption to check: Limited puzzle categories and themes
Validate with people who use this workflow before building.
Hypothesis 2
Implement a smarter ad placement strategy or offer an ad-free premium option.
Assumption to check: Ads can interrupt gameplay
Validate with people who use this workflow before building.
Hypothesis 3
Ensure puzzles are accurately categorized by difficulty and provide player feedback.
Assumption to check: Difficulty levels can be inconsistent
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the design and improve navigation to enhance user experience.
Assumption to check: User interface can feel cluttered
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
get an engaging experience with one of the world’s most-downloaded jigsaw puzzle games from a top developer! jigsaw puzzles is an addictive, easy to play game with over 13,000 free cute hd pictures. no points, no gimmicks, and no missing pieces, simply enjoy hours of fun putting puzzles together to calm down and relax. created by game experts and played by millions of puzzle lovers worldwide, jigsaw puzzles helps you exercise your short-term memory and concentration, while passing the time with real puzzles and without taking up as much room. features: · tons of free beautiful, high quality pictures. choose from a variety of categories such as colors, flowers, nature, animals, art, landmarks, hard puzzles and others · daily free puzzle. get a new puzzle every day and collect them all! · seasonal events. take part in game events and collect unique postcards · mystery puzzles. challenge yourself to reveal what is hidden in a picture · daily updated gallery. you’ll never run out of free puzzles · helpful hints. use hint to match the next piece to the puzzle if you are stuck · up to 400 puzzle pieces. the more pieces, the harder your game becomes · rotation mode. turn on rotation, make the game more tricky · custom backgrounds. choose your favorite appearance to play with more pleasure. make every day relaxing and fun putting puzzle pieces together!
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
Supabase
Zustand
React Navigation
React Native Reanimated
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.
