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
Invoice Master Plus
Invoice Master is the ultimate tool for freelancers, small business owners, and consultants who need a professional, streamlined way to manage their billing on the go
$7.99 · In-app purchases
PRICE
$7.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
2 ratings · Top 5%
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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
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.
JavaScript is required to complete mailbox verification.
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 Invoice Master Plus: map the core Business workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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
Provide more templates and customizable fields.
Assumption to check: Lack of advanced customization options for invoices.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a more intuitive navigation structure.
Assumption to check: Difficult navigation between sections.
Validate with people who use this workflow before building.
Hypothesis 3
Add a feature for managing recurring invoices.
Assumption to check: Limited support for recurring invoices.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize data handling and rendering for better performance.
Assumption to check: Slow performance with large data sets.
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
Invoice Master is the ultimate tool for freelancers, small business owners, and consultants who need a professional, streamlined way to manage their billing on the go. Stop wasting time with complex software—create, manage, and send professional PDF invoices in seconds. Key Features: Professional PDF Invoicing: Generate clean, high-quality PDF invoices and estimates ready to be sent to your clients via email, WhatsApp, or any messaging platform. Custom Branding: Make every document your own. Easily upload your Company Logo to maintain a professional brand identity. Digital Signatures: Add a personal touch and formalize your agreements. Draw your Signature directly in the app to be automatically applied to your invoices. Client & Product Management: Save time with a built-in database. Manage your client contact details and product catalogs with stock tracking for faster document creation. Payment Tracking: Never miss a payment again. Get a clear overview of your "Paid," "Unpaid," and "Overdue" invoices at a glance. Financial Insights: Monitor your cash flow with intuitive dashboards that show your monthly performance and outstanding balances. Secure Backup & Restore: Your data is precious. Use our robust Backup and Restore functionality to ensure your business records are safe and easily transferable between devices. Dark Mode Support: A beautiful, modern UI designed for efficiency and eye comfort, whether you're working day or night.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
Formik
@react-navigation/native
react-native-paper
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.
