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
Presto - EV Charging Stations
Charge your electric vehicle (EV) with Presto — the EV charging app to find, pay for, and manage your EV charging
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
4,314 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 included16 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 Presto - EV Charging Stations: 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
Implement advanced filtering by power type, availability, and user ratings.
Assumption to check: Limited filtering options for charging stations
Validate with people who use this workflow before building.
Hypothesis 2
Integrate real-time data updates from charging networks.
Assumption to check: Occasional inaccurate station availability data
Validate with people who use this workflow before building.
Hypothesis 3
Encourage user feedback and add a review system for each station.
Assumption to check: Lack of detailed user reviews
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to download maps and station information for offline use.
Assumption to check: No offline capabilities
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
Charge your electric vehicle (EV) with Presto — the EV charging app to find, pay for, and manage your EV charging. Whether you drive a Tesla, Rivian, Kia or other electric car, Presto's got you covered with fast, reliable charging. ▶ ONE-STOP EV CHARGING ◀ • Find and pay for fast charging across multiple charging networks with Presto’s single app and real time map ▶ RECOMMENDATIONS FOR RELIABLE CHARGING ◀ • Presto's smart algorithms recommend reliable charging stations, aligning with your route and needs ▶ SAVE ON CHARGING ◀ • Opt for a charging plan for savings, or use a flexible payment option to pay as you go across networks with a single charging app ▶ CUSTOMIZED FOR EV CORPORATE FLEETS ◀ • Leverage tailored discounts and dedicated support, streamlining charging operations for EV fleets and beyond ▶ CONNECTIVITY AND CUSTOMIZATION ◀ • Activate and monitor charging sessions on your device, with notifications to keep you informed every step of the way ▶ TAILORED CHARGING EXPERIENCE ◀ • Receive individualized charging suggestions and effortlessly track your usage, compatible with a range of EVs, including Ford, Hyundai, Chevy and other leading brands ▶ A COMMUNITY OF EV ENTHUSIASTS ◀ • Join a thriving community of EV drivers enjoying an effortless and enjoyable charging experience ▶ EV CHARGING PLANS FOR EVERY DRIVER ◀ Choose your plan, save on charging, and embark on your EV journey with confidence, knowing Presto has you covered. Charge smarter and join the ranks of satisfied EV drivers — from Tesla aficionados to Kia enthusiasts — by downloading Presto. For assistance or to learn more, visit https://www.prestocharging.com/.
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
react-navigation
@react-native-maps
axios
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.
