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
ChargeHub EV Charge Point Map
Download ChargeHub - the #1 app for EV drivers
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
12,060 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 ChargeHub EV Charge Point Map: 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
Enhance map functionalities with real-time traffic data.
Assumption to check: Limited map features compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Integrate user-generated data for real-time updates.
Assumption to check: Inconsistent data accuracy for charging station locations
Validate with people who use this workflow before building.
Hypothesis 3
Optimize API requests and local caching.
Assumption to check: Slow loading times for search results
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to personalize their experience and preferences.
Assumption to check: Limited user customization options
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
Download ChargeHub - the #1 app for EV drivers ChargeHub is a must have App for all American & Canadian electric car owners who want to find EV charging stations locations to plug their Tesla Model S / Leaf / iMiEV / Volt / Focus EV / Plug-in Prius / Smart EV / BMW i3 / KIA Soul EV /etc. Search & find nearest public electric car charger (EV plug, Tesla Supercharger, CHAdeMO, SAE combo DC fast), plan your trip & get driving directions to charge your EV! Follow on Twitter @EVChargeHub -- What this app does -- EV Charger Locator Map Interface: -Find electric vehicle charging stations ( EVSE ) -Get turn-by-turn directions to the nearest charge point -Over 55 000 charge ports supported in the US & Canada -Get color coded live availability data from EV charge stations in the following networks: Blink, Hydro Quebec's Circuit Electrique, AddEnergie Flo, SemaCharge and Greenlots - Pay for charging with the ChargeHub app! - Login with Facebook or signup with ChargeHub - Receive Notifications for new stations in your area or any area you want - Add your own personal station to help other ChargeHub users. You have complete control over the station information in real time! -Request permission from other EV users for charger use ("plugshare-ing") - Simple and intuitive chat interface. Never share your email since the communication is all within ChargeHub. -Found a new public EV charger? Add it to the database! -Rate & add comments for all public charging stations -Use search feature to find Level 1, Level 2 (EV Plug) and DC Fast chargers (Tesla Superchargers, SAE DC Fast & CHAdeMO) anywhere across North America -Smooth & responsive interface. The information you want at the tip of your fingers. -Filter and search EV charge stations to only display the ones you want (by network, by charging level, etc) -Directly call the EVSE network from the app to get more information (ex: Chargepoint, Tesla Supercharger, evGO, Blink, Electric Circuit, SemaCharge, Flo) -Unique logos for Tesla Superchargers, SAE DC Fast chargers and CHAdeMO charging stations -Detailed usage data for BC evCloud connected EV charging stations Who should download this app: -Electric car owners who want to find electric car charging stations -Prospective buyers of Tesla ModelS / Leaf / iMiEV / Volt / Focus EV / Plug-in Prius / Smart EV / etc, who want to know where electric vehicle charge stations are before purchasing an electric car. Terms and conditions: https://chargehub.com/en/terms-and-conditions.html
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
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react-navigation
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@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.
