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
Piping DataBase - XTREME
Now the largest piping database reference - free in-app purchases
$9.99 · In-app purchases
PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.9
212 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.
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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/
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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 Piping DataBase - XTREME: 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
Enhance database with more comprehensive details and visuals.
Assumption to check: Limited material information compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Simplify navigation and enhance onboarding experience.
Assumption to check: User interface can be confusing for new users.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to personalize settings and favorites.
Assumption to check: Lack of customization options for users.
Validate with people who use this workflow before building.
Hypothesis 4
Streamline subscription management and improve paywall visibility.
Assumption to check: In-app purchase process can be cumbersome.
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
Now the largest piping database reference - free in-app purchases. One price - All in! FOR A LIMITED TIME! Download now the complete library modules. Select the "+ Modules" tab to download your free modules. You will see the price as $ 0.00 for each in-app purchase. Tap the button to download for free, for a LIMITED TIME only. Continuous update for the biggest piping mobile application. We never stop adding, users are assured of new modules courtesy of requests by thousands of users. Presented in a very simple set-up – scroll to different components per category. Figures in standard piping symbols, drawn by CAD software. Dimension units are interchangeable and displayed in standard drafting practice. No need to view multiple pages, one stop per category. All relevant piping data are shown for every tap, no fancy displays, direct and easy to understand plus a guide per info page. The best reference for piping layout, isometric drawings, shop and field drawings, detailing and material take-off! Anytime, anywhere and any situation! We welcome suggestions to make this application the best piping reference app. If you want specific piping component to be included, please send feedback on the customer reviews and the most requested will be added ASAP!!! COMPONENTS: (all available here) - Fittings: 90/45 deg. Elbows, 90 deg Reducing Elbow, Straight & Reducing Tee, Straight & Reducing Cross, 180° Return, Coupling, Cap, Concentric & Eccentric Reducers, Lap Joint Stub End (BW, Socket Welding & Threaded) - Flanges: Welding Neck, Socket Welding, Slip-On Welding, Threaded, Blind & Lapped with quantity of Bolts, Diameter and Length. All class ratings, including RF & RTJ facings. (B16.5) - Valves: Gate, Globe, Check, Ball, Butterfly & Control Valves (Flanged, BW, Socket Welding and Threaded connections) - Pipe Schedule: STD, XS, XXS & all Schedules including API Specification 5L with weight of empty steel pipe or with water per foot/meter length. - Branch Connections: Welding, Socket & Threaded Outlets and Elbolets. - Line Blanks: Figure-8, Paddle Blanks & Paddle Spacers - Gaskets: B16.20 and B16.21 (non-metallic flat gaskets and spiral-wound, ring type joint and jacketed) - Suggested Pipe Support Spacing (New) - Malleable Iron Fittings (ASME B16.3) - Orifice Flanges (ASME B16.36) - Pipe Spacing - Large Diameter Flanges (ASME B16.47) - Flange Joint Bolt Tightening Sequence (single tool) Quick Tip: When in inches units, display shows decimal inch. To view in fraction, tap any dimension and will reveal the inch fraction equivalent.
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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
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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.
