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
Manus - Hand reference for art
Need a hand on drawing human hand? This nifty little app is friend of anyone who struggles with drawing hands
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 1.9
7 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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
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 Manus - Hand reference for art: map the core Graphics & Design 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
Expand library with user-generated content.
Assumption to check: Limited hand poses available for reference
Validate with people who use this workflow before building.
Hypothesis 2
Implement advanced filtering and tagging.
Assumption to check: Difficult to navigate and search for specific poses
Validate with people who use this workflow before building.
Hypothesis 3
Optimize app performance and loading speeds.
Assumption to check: Inconsistent app performance and loading times
Validate with people who use this workflow before building.
Hypothesis 4
Add social features for users to share and rate poses.
Assumption to check: Lack of community features for sharing and feedback
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
Need a hand on drawing human hand? This nifty little app is friend of anyone who struggles with drawing hands. With this handy tool you can make unlimited number of hand poses in just seconds. It is a must have hand reference tool for any artist’s. With Manus app you can rotate, bend and set distance of every finger to get that pose you are looking for. With flexible camera controls you can pan and rotate hand model freely to examine pose from any angle. App has male and female hand models and variety of pre-made hand poses to get started with. * 3D Male and female hands * Left and right hand * Pre-made poses * Freely rotate lights * Save and load hand poses * Save poses as image files to gallery * Pan and rotate camera Enjoy and become master of drawing human hands. Zoom camera in/out - Pinch gesture Rotate camera - Two finger drag Pan camera - Three finger drag Supported screen size: 4.7" and larger. iPad preferred. If there is any feature you would like to see in the app, please let us know! Website: http://codelunatics.com Twitter: @Codelunatics
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
React Navigation
Zustand
expo-image-picker
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.
