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
Jigsawcard Solitaire Puzzle
Jigsawcard – The HD Jigsaw Puzzle & Solitaire Card Game
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
213,299 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 Jigsawcard Solitaire 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 more varied game modes and daily challenges
Assumption to check: Limited game modes and challenges
Validate with people who use this workflow before building.
Hypothesis 2
Simplify purchasing process and clearly label item benefits
Assumption to check: In-app purchases can be confusing
Validate with people who use this workflow before building.
Hypothesis 3
Add new puzzles and themes regularly to keep content fresh
Assumption to check: Potential for repetitive gameplay
Validate with people who use this workflow before building.
Hypothesis 4
Implement rewarded ads for extra lives instead of interrupting play
Assumption to check: Ads can interrupt gameplay
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
Jigsawcard – The HD Jigsaw Puzzle & Solitaire Card Game Experience an exciting new way to enjoy jigsaw puzzles! In Jigsawcard, you’ll flip, slide, match, and snap puzzle cards to reveal breathtaking HD images. The game seamlessly blends classic jigsaw satisfaction with smooth solitaire card-sliding mechanics and mysterious face-down cards that await your revealing flip, creating a relaxing yet addictive, surprising, and truly memory‑challenging adventure. How to Play - Slide cards into place with easy, intuitive swipes - Strategically flip face-down cards to uncover their image and reveal vital clues. - Match & snap pieces to finish puzzles faster - Plan moves carefully to keep sets intact and clear the board efficiently Key Features - Stunning HD jigsaw pictures: nature, art, animals & more - Satisfying snap & chain reactions when multiple cards connect - Mysterious face-down cards — expect unpredictable reveals and a genuine memory challenge - No timers, no pressure — perfect for all ages and skill levels - From quick casual puzzles to complex challenges for dedicated players - Unlock different sceneries to keep your puzzle journey fresh Perfect For - Fans of jigsaw puzzles, sliding puzzles, card matching, or unique blend of jigsaw and solitaire gameplay - Players seeking a relaxing yet rewarding puzzle experience - Those who love beautiful, high‑quality visuals while training their brain Jigsawcard is more than a jigsaw puzzle game — it’s your daily escape, your moment of calm, and a celebration of creativity. Flip, slide, match, and watch stunning HD puzzle cards come to life one satisfying snap at a time. Download now and join jigsaw puzzle lovers worldwide in the beautiful and rewarding fusion of jigsaw and solitaire card puzzle experience! Terms: https://oakevergames.com/tos.html Privacy Policy: https://oakevergames.com/pp.html EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Email: [email protected]
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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
react-navigation
@supabase/supabase-js
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.
