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
Nonocross
Put your logic skills to the test with Nonocross, the addictive number puzzle game where every correct move helps bring a hidden image to life!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 1.7
16 ratings · Below Average
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 included15 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 Nonocross: 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
Ensure a stable version with thorough testing before launch.
Assumption to check: Low user rating due to bugs and crashes
Validate with people who use this workflow before building.
Hypothesis 2
Implement a daily puzzle feature to keep content fresh.
Assumption to check: Limited puzzles leading to repetitive gameplay
Validate with people who use this workflow before building.
Hypothesis 3
Offer a fair hint system that rewards players for completing challenges.
Assumption to check: In-app purchases for hints may feel frustrating
Validate with people who use this workflow before building.
Hypothesis 4
Add social sharing and challenge options to enhance user interaction.
Assumption to check: Lack of social features and community engagement
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
Put your logic skills to the test with Nonocross, the addictive number puzzle game where every correct move helps bring a hidden image to life! How it works Use the numbers as clues to fill in the grid. Each row and column tells you how many blocks to mark. Think carefully, avoid mistakes, and watch as the mystery image is revealed! Features Handcrafted puzzles Beautiful pixel-art images to uncover Simple to learn, challenging to master Helpful hints when you’re stuck Relaxing gameplay with a rewarding twist Challenge your brain You only have a limited number of lives—so every move counts! Plan wisely, use hints when needed, and sharpen your logic skills with every level. Collect and reveal From cute animals to fun surprises, each completed puzzle unlocks a unique image. Can you reveal them all? Whether you're a puzzle beginner or a seasoned pro, Nonocross offers the perfect mix of relaxation and challenge. Download now and start revealing!
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
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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.
