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
Oil Well Production Log GAUGE
GAUGE is the private, on-device field journal built for oil and gas production and reservoir engineers
$2.99 · In-app purchases
PRICE
$2.99
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 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 Oil Well Production Log GAUGE: map the core Business 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 a robust analytics dashboard with visual charts.
Assumption to check: Users may find it hard to track production over time
Validate with people who use this workflow before building.
Hypothesis 2
Enhance form inputs and validations for logging production.
Assumption to check: Lack of user-friendly data entry features
Validate with people who use this workflow before building.
Hypothesis 3
Create a well overview with easy navigation and management features.
Assumption to check: Difficulties in managing multiple wells
Validate with people who use this workflow before building.
Hypothesis 4
Add functionality to export data or share production logs.
Assumption to check: Limited sharing options for data
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
GAUGE is the private, on-device field journal built for oil and gas production and reservoir engineers. Capture what you see at the well in seconds, then let AI turn your notes into reports, flags, and trends. No account. No cloud. No signal required. WHY ENGINEERS CHOOSE GAUGE - Log a well in seconds, even with no signal, anywhere in the field - AI reads your journal and flags possible mechanical trouble before it becomes failure - Generate status reports, weekly digests, and handoff briefs in one tap - Spot decline early with trend charts and exponential decline-curve fit - Everything stays on your device, private by design AI THAT WORKS FOR YOU - Flag scan surfaces wells that may show mechanical issues, with rationale and suggested checks - Status reports, weekly portfolio digests, and shift handoff briefs - Ask Your Wells: ask a question in plain English and get answers cited from your own entries - Decline analysis with an estimated percent-per-month rate - Import paper run tickets and gauge sheets with the camera and AI BUILT FOR THE OILFIELD - Lift-aware readings for rod pump, ESP, gas lift, plunger, and flowing wells - Log production tests, interventions, observations, anomalies, and routine rounds - One-tap templates for recurring events like pump-off, freeze-off, and treatments - Attach photos of the wellhead, gauge face, and equipment to any entry - Track oil, water, and gas rates, water cut, GOR, choke, and pressures - Imperial or metric units, switchable anytime STAY ON TOP OF YOUR BOOK - Portfolio dashboard with open flags, down wells, and weekly activity - Per-well vitals, trends, and full history at a glance - Insights, activity heatmap, and a daily logging streak YOUR DATA, YOUR CONTROL - Works fully offline, with no account or sign-in - Passphrase-encrypted backups you control - Export to CSV, Markdown, or PDF and share where you choose Unlimited wells, the full AI suite, advanced charts and decline-curve fit, run-ticket import, saved filters, and PDF export. Questions or feedback? Email [email protected] Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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
Supabase
Victory Native
React Navigation
Zustand
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.
