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
MudLAB - Mud Engineer Tool
Welcome to the MudLAB app – Your Essential Tool for Oilfield Operations!
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 included14 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 MudLAB - Mud Engineer Tool: 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 user feedback system for continuous improvement.
Assumption to check: Lack of user reviews and feedback
Validate with people who use this workflow before building.
Hypothesis 2
Add more calculators and features to enhance usability.
Assumption to check: Limited calculator functionality
Validate with people who use this workflow before building.
Hypothesis 3
Include a forum or help section for user engagement.
Assumption to check: No community support
Validate with people who use this workflow before building.
Hypothesis 4
Improve design to make it more visually appealing and user-friendly.
Assumption to check: Basic design and UX
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
Welcome to the MudLAB app – Your Essential Tool for Oilfield Operations! Are you a Mud Engineer or part of a dedicated oilfield team? Look no further! Our app is designed with you in mind, but its benefits extend to anyone in the oilfield industry. It empowers you with essential calculations and a comprehensive reference guide right at your fingertips, ensuring the success of your projects. Key Features: Effortless Calculations: Perform critical calculations such as pump output, hole volume, annular volume, and annular velocity with ease. These calculations are pivotal to the economic viability of your projects, and our app simplifies them for you. Comprehensive Reference Guide: Access a wealth of reference materials and basic calculators essential for your daily tasks. This feature streamlines your work, making it faster and safer, ultimately contributing to the success of your operations. Up-to-Date API Data: Stay ahead of the game with access to the latest American Petroleum Institute (API) data. We ensure that you have the most current information at your disposal. Real-World Testing: Rest assured that our app has been rigorously tested in real oilfield environments across the United States, the United Arab Emirates, and Iraq. We've collaborated with professionals in oilfield services companies to validate our calculations and ensure accuracy. Quick Calculation for Safe Operations: Prioritize safety and efficiency with our quick calculation feature. It's your tool for ensuring safe operation times. For any questions, clarifications, or corrections, please don't hesitate to reach out to us at [email protected]. We value your feedback and are here to support you. Get ready to enhance your performance in the oilfield. Good luck with your endeavors, and may your projects be a resounding success!
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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
Zustand
Axios
React Navigation
React Native Paper
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.
