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
Tangle Patterns Mega Pack
Find your next pattern and make time to draw.
$5.99 · In-app purchases
PRICE
$5.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
1,219 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 included16 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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Tangle Patterns Mega Pack: map the core Reference 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 community submission feature for user-generated patterns.
Assumption to check: Limited pattern updates
Validate with people who use this workflow before building.
Hypothesis 2
Add an onboarding tutorial to guide through features.
Assumption to check: Difficult navigation for new users
Validate with people who use this workflow before building.
Hypothesis 3
Offer a freemium model with basic patterns available for free.
Assumption to check: High price for premium content
Validate with people who use this workflow before building.
Hypothesis 4
Integrate social media sharing for patterns and user creations.
Assumption to check: Lack of social sharing options
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
Find your next pattern and make time to draw. Tangle Patterns Mega Pack puts a curated collection of 275 patterns and their step-by-step instructions at your fingertips. Browse for inspiration, study each stroke in detail, and build a drawing practice that goes wherever you do. CREATE AT YOUR OWN PACE • Follow clear, step-by-step drawing instructions. • Zoom in to study lines, shapes, and details. • Keep your screen awake while you draw. • Access patterns and instructions offline. FIND INSPIRATION FAST • Search by pattern name • Save favorites for your next drawing session. • Let the app choose a random pattern when you want a surprise. FROM SCREEN TO PAPER • Print a blank step-by-step template using an AirPrint-compatible printer. • Visit original source links and discover the artists behind the patterns. Whether you are learning your first structured pattern or expanding an established practice, Tangle Patterns Mega Pack makes it easy to slow down, focus, and create. AirPrint requires a compatible printer. The Zentangle® Method was created by Rick Roberts and Maria Thomas. Zentangle is a registered trademark of Zentangle, Inc. Learn more at zentangle.com.
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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
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.
