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
Club CITGO - Gas Rewards
Love saving money? You need the Club CITGO app! Club CITGO is our free loyalty program – and the easiest way to maximize your savings on gas and more
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 2.5
218 ratings · Below Average
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 included18 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 Club CITGO - Gas Rewards: map the core Navigation 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
Ensure robust error handling and stability.
Assumption to check: Poor user reviews due to bugs and crashes
Validate with people who use this workflow before building.
Hypothesis 2
Provide detailed information and user reviews for each station.
Assumption to check: Limited gas station information
Validate with people who use this workflow before building.
Hypothesis 3
Create a clearer user flow with intuitive navigation.
Assumption to check: Confusing navigation structure
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the paywall and clearly communicate benefits of premium features.
Assumption to check: In-app purchase confusion
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
Love saving money? You need the Club CITGO app! Club CITGO is our free loyalty program – and the easiest way to maximize your savings on gas and more. With no points to hassle with. Rewards are applied automatically. Your savings start when you sign up, with our one-time welcome offer of 20¢ off per gallon, up to 30 gallons! And they keep rolling with everyday instant rollback fuel savings: • Everyday Savings: save 3¢ per gallon every day • Triple Tuesday: Save 9¢ off per gallon • Five Cent Fridays: Save 5¢ off per gallon Check out some exciting additions to the Club CITGO app: Pay with the app – Members can now add their preferred payment method and pay for fuel and in-store purchases right from their phone. Options include Credit, Debit, Apple Pay, and CITGO PlusPAY (ACH). Preferred Loyalty Status – New members are automatically rewarded with Club Status. Once you make 12 fuel purchases of 8 gallons or more in a qualification period, you’ll level up to Premier Status and enjoy even bigger everyday savings! Sweepstakes – Quick and easy entry on all Club CITGO sweepstakes throughout the year – right from your home screen. PLUS these other great app features: • Find deals on snacks, beverages and all your favorite convenience store products • View available reward balance • View loyalty status and track your progress • Find participating gas stations near you Ready to start saving on fuel? Here’s what to do. • Download the Club CITGO app • Sign up for your free Club CITGO membership • Use the app to find a participating CITGO gas station location • Enter your Alt ID at the pump or in the store to apply your everyday CITGO rewards or load a form of payment and pay with the app Saving money couldn’t be easier. So, start reaping all the rewards of Club CITGO today! Call 888-246-2582 for assistance, Monday – Friday, 6:00am to 7:00pm CST. -------------------------------------------------------------------------------------------------- Note: Savings and reward content is available only at CITGO Gas Stations and Convenience stores that participate in the CITGO Mobile and Rewards app program. All stores may not provide all types of information, deals or rewards. We are adding more participating locations regularly.
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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
Axios
Zustand
React Navigation
expo-location
BUILD KIT DIFFICULTY
Advanced
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.
