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
MPT4U
The New and Amazing MPT4U is here! With exciting new features
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.1
113 ratings · Top 30%
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 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.
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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 MPT4U: map the core Utilities 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
Include advanced features like scientific calculations and unit conversions.
Assumption to check: Limited functionality compared to dedicated calculator apps
Validate with people who use this workflow before building.
Hypothesis 2
Implement a consistent design theme across all screens.
Assumption to check: Inconsistent user interface design
Validate with people who use this workflow before building.
Hypothesis 3
Add categorization or tagging for past calculations.
Assumption to check: History feature lacks organization
Validate with people who use this workflow before building.
Hypothesis 4
Enable sharing of history via email or messaging apps.
Assumption to check: No export options for history
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
The New and Amazing MPT4U is here! With exciting new features. Specially for you!! Absolutely FREE to use on MPT network. Anytime, anywhere. New feature, auto renewal data pack and Kyin Kyin Nar Nar Pack are available in MPT4U. Enjoy Free MPT Club membership. With great promotional offers and Daily Free Hti Pauk. New and convenient design to make most out of it. Personalized experience in your preferred language. Enjoy most convenient features, no matter where you are. Play MPT Hti Pauk and Win Exciting Prizes daily - ONLY on MPT4U. Special Offers customized as per your requirements. Manage account and services easily. For all your requirements, one stop application. MPT4U is most Useful, Convenient and Secure application. With improved features and simple interface. Most Loved Features of MPT4U:- • Data FREE Usage on MPT Network. • FREE MPT Club membership and Daily FREE Hti Pauk. • Special Offers and Packages for everyone. • Easily Topup –MPT Money, Scan QR Code • Easily and Flexible Loan and Balance transfer • Manage account, Check usage history, Subscriptions, etc. • Gift Packages or Topup to your loved ones. • Topup & Package Purchase history • Notifications of latest offers from MPT • Many more useful and convenient features at your fingertips.
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
Redux
react-native-async-storage
expo-router
react-native-gesture-handler
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.
