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
EVgo - Find a Fast EV Charger
Find and fast charge your EV at 1,200+ EVgo fast EV charging stations across 47 states on one of America’s largest public electric vehicle charging networks
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
30,571 ratings · Top 15%
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 EVgo - Find a Fast EV Charger: 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
Provide more detailed data like real-time availability and user reviews.
Assumption to check: Limited charging station information
Validate with people who use this workflow before building.
Hypothesis 2
Implement smoother transitions and clearer navigation paths.
Assumption to check: Inconsistent navigation experience
Validate with people who use this workflow before building.
Hypothesis 3
Optimize data fetching and caching for better performance.
Assumption to check: Slow loading times for map data
Validate with people who use this workflow before building.
Hypothesis 4
Make subscription options clearer with better in-app prompts.
Assumption to check: Subscription 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
Find and fast charge your EV at 1,200+ EVgo fast EV charging stations across 47 states on one of America’s largest public electric vehicle charging networks. FIND FAST EV CHARGER STATIONS • Join 1.6M+ EVgo drivers and locate open EV charging stations near you on a live map and follow turn-by-turn directions to the nearest electric vehicle charging station. PAY YOUR WAY • Start an EV charging session with Autocharge+, the EVgo charging app, RFID card, or credit card on supported chargers. VIEW LIVE CHARGING PROGRESS • Monitor state of charge, charging speed, cost, and session time live from the EVgo app. SHOP WHILE YOU CHARGE • Charge your EV while you shop, dine, or run errands at grocery stores, shopping centers, and restaurants. PLUG INTO CONNECTORS THAT FIT YOUR EV • Save your EV to see only fast charging stations with the right plug, power level, partner network, and amenities. CHARGE ANY EV MODEL • Power up any battery-electric vehicle, from a Tesla to a Chevy Bolt, using CHAdeMO, CCS, or NACS connectors at compatible EV charging stations. SAVE YOUR ELECTRIC VEHICLE • Scan the VIN barcode or search make-model, then let the app auto-filter every EV charging map result to match that electric car. PLUG IN, POWER UP • Enroll in Autocharge+ so every EV charging session starts the instant you connect, with no credit cards or extra steps. SEE THE EXACT EV CHARGING COST • Preview time-of-use rates pricing before you plug in and watch the session’s EV charging cost update in real time. SAVE MORE WITH THE RIGHT PLAN • Get lower EV charging rates with an EVgo subscription optimized to your charging needs and waive the $2.99 session fee with a plan. CHARGE WITH ROAMING PARTNERS • Tap into 75,000+ additional EV charging stalls from roaming partners like ChargePoint and SemaConnect chargers in the EVgo app. UNLOCK PERKS • Redeem fast charging perks with qualifying electric vehicles from Cadillac, Toyota, and other EVs. 24/7 LIVE SUPPORT • Need help? Chat with our in-app virtual assistant at https://helpcenter.evgo.com/ or email [email protected]. FAST CHARGING FOR MANY BATTERY ELECTRIC VEHICLES - Tesla Model X, Y, S, 3, Cybertruck - BMW i3, i4, i5, i7, and iX - Chevrolet Bolt EV, Bolt EUV, Blazer, Equinox, and Silverado - Cadillac Lyric, Escalade IQ, Celestiq - Hyundai Ioniq, Ioniq 5, Ioniq 6, Ioniq 9, Kona - Mercedes- Benz EQS, EQB, EQE, EQS SUV - Acura ZDX - Audi e-tron GT, Q4 e-tron, Q8 e-tron - Ford Mustang Mach-e, F150 Lightning - Genesis GV60, GV70, G80 - GMC Hummer EV, Sierra - Fisker Ocean - Honda Prologue - Jaguar I-Pace - Kia EV6, EV9, and Niro - Lexus RZ - Lordstown Endurance - Lucid Air - Mazda MX-30 - Mini Cooper Electric - Nissan LEAF and ARIYA - Polestar 2, 3 - Porsche Taycan - Rivian R1T, R1S - Subaru Solterra - Toyota bZ4X - Vinfast VF8, VF9 - Volkswagen ID. 4, ID. Buzz - Volvo C40, EX30, EX90, and XC40 Download the EVgo app today and start the fall season with convenient access to a network of DC fast charging stations built for every EV driver.
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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-maps
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.
