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
ASTM 6A Table
Unlock the power of ASTM Table 6A with our intuitive and efficient calculator app! Whether you're in the field or in the office, this app empowers you to quickly and accurately calculate Volume Correction Factors (VCF...
$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 included15 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 ASTM 6A Table: 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
Incorporate interactive elements like quizzes or user feedback.
Assumption to check: Limited user engagement due to lack of interactivity.
Validate with people who use this workflow before building.
Hypothesis 2
Implement advanced search features with filters.
Assumption to check: Difficulty in searching for specific standards.
Validate with people who use this workflow before building.
Hypothesis 3
Offer a freemium model with valuable free content.
Assumption to check: Monetization may deter users.
Validate with people who use this workflow before building.
Hypothesis 4
Enhance detail views with diagrams or examples.
Assumption to check: Insufficient detail presentation.
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
Unlock the power of ASTM Table 6A with our intuitive and efficient calculator app! Whether you're in the field or in the office, this app empowers you to quickly and accurately calculate Volume Correction Factors (VCF) based on API Gravity and Temperature according to ASTM Table 6A standards. Key Features: - Easy to Use: Simply input the API Gravity @ 60°F and Temperature in degrees Fahrenheit, and let the app handle the rest. - Accurate Results: Utilizes ASTM Table 6A calculations to ensure precise Volume Correction Factors, essential for various industries including petroleum, energy, and more. - Tafel and Routine Calculations: Choose between Tafel or Routine methods to suit your specific needs. - Intuitive Interface: Streamlined interface ensures a smooth user experience, making complex calculations a breeze. - On-the-Go Convenience: Whether you're out in the field or at your desk, access powerful ASTM Table 6A calculations right from your iOS device. Say goodbye to manual calculations and human errors. Download ASTM Table 6A Calculator now and streamline your workflow with confidence and precision!
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
Zustand
@react-navigation/native
react-native-share
Expo Router
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.
