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
Click X
click x – classic mahjong tile matching puzzle
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
1,011 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 included18 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 Click X: 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 varied game modes or tile types to enhance engagement.
Assumption to check: Limited gameplay variety leads to repetitive experience
Validate with people who use this workflow before building.
Hypothesis 2
Implement a relaxing mode without a timer to attract more casual players.
Assumption to check: Difficulty in keeping user attention due to timer pressure
Validate with people who use this workflow before building.
Hypothesis 3
Provide more user-friendly ad placements or alternative earning methods.
Assumption to check: Monetization can feel intrusive with ads
Validate with people who use this workflow before building.
Hypothesis 4
Add friend challenges or tournaments to boost user interaction.
Assumption to check: Lack of social features for competition
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
click x – classic mahjong tile matching puzzle click x is a relaxing yet challenging mahjong solitaire game that blends classic tile matching with modern design. featuring large tiles and an easy-to-use interface, it’s the perfect puzzle game for both phone and tablet. whether you’re looking to relax or keep your mind sharp, click x is designed especially for older adults and puzzle lovers of all ages. how to play： simply match identical tiles to clear the board. tap or slide two matching tiles that are free (not blocked by others), and they will disappear. clear all tiles to win the game! game features： ●classic mahjong solitaire – play hundreds of levels with traditional tile sets. ●innovative twists – special tiles add a fresh challenge to the classic mahjong puzzle. ●large & clear design – big tiles and text for comfortable play. ●mind training mode – fun puzzles designed to boost memory and focus. ●relaxed gameplay – play mahjong without timers or score pressure. ●combo rewards – match tiles consecutively to unlock exciting effects. ●helpful boosters – use free hints, undo, and shuffle anytime. ●offline play – enjoy mahjong puzzles anytime, anywhere, no wi-fi needed. ●multi-device support – smooth experience on both phone and tablet. click x is the free mahjong solitaire puzzle that combines relaxation and brain training. if you love tile matching games, puzzle games, or classic solitaire mahjong, this game is made for you. download click x now and start your mahjong journey today! --- stay connected & safe support: [email protected] privacy policy: https://www.heartsnet.com/privacy-policy terms of service: https://www.heartsnet.com/terms-of-use/ eula: https://www.heartsnet.com/terms-of-use/ facebook:https://www.facebook.com/people/click-x/61581078808156/
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.
