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
SpotAngels Parking & Gas
Find parking, save money on gas and protect yourself from tickets with SpotAngels.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
12,861 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 included17 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 SpotAngels Parking & Gas: 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 real-time updates and user reporting features.
Assumption to check: Users complain about inaccurate parking availability information.
Validate with people who use this workflow before building.
Hypothesis 2
Design a cleaner interface with better organization of information.
Assumption to check: Some users find the UI cluttered.
Validate with people who use this workflow before building.
Hypothesis 3
Offer offline map downloads and saved searches for better usability.
Assumption to check: Limited offline functionality.
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 parking, save money on gas and protect yourself from tickets with SpotAngels. Take advantage of the free 7-day trial. You can cancel anytime and will be reminded 2 days before the end of the trial! **Find free parking** Find spots where you can park for free and get their predicted availability. The information is provided by our community of millions of Angels who report open spots and take pictures of parking signs. Search and filter the map in 1 tap to find free parking and save money! **Get parking deals** SpotAngels offers deals at more than 5,000 garages and lots in more than 100 cities. Book in advance to get a discount compared to the on-site price! **Check street parking rules** See where to park to avoid street cleaning/alternate side parking. The map also includes time limits, meter hours and rates and no parking times. It supports residential parking permits in cities where they apply. **Receive street cleaning reminders** The app automatically remembers your parking location using your car's Bluetooth. It then sends you notifications when it's time to move your car for street cleaning or any other street parking rule. If you don't have a car Bluetooth you can still set your car location manually. **Find the best gas prices near you** The app shows you the prices of gas prices near you. You can filter by type of gas: regular, medium, premium. The prices are constantly updated by the community. **Contribute and Earn SPTC** Earn Spotcoins by reporting open spots and adding parking signs or gas prices pictures. You will be able to redeem your Spotcoins for money, discounts in garages or get free access to our premium subscription SpotAngels Plus. Atlanta Austin Berkeley Boston Chicago Columbus Dallas Detroit Hoboken Houston Indianapolis Jacksonville Los Angeles (LA) Miami New York City (NYC) Oakland Philadelphia (Philly) Phoenix Portland San Antonio San Diego San Francisco (SF) San Jose Santa Monica Seattle Washington, D.C. Toronto Montreal Vancouver London and many other cities. Start crowdsourcing to put your city on the map! They are talking about SpotAngels: “The NYC street parking spot finder” New York Post “The solution to NYC parking tickets” Fox 5 New York "SpotAngels can at least make sure you avoid a parking ticket" The Boston Globe "SpotAngels helps drivers avoid parking tickets” San Francisco Chronicle “San Francisco parking app protects you from parking tickets” CBS San Francisco "Useful for finding open meters and free parking" Chicago Tribune "SpotAngels helps drivers find free parking and cheap parking, fast" Patch Los Angeles "The map helps drivers find free and cheap parking" Patch Seattle Happy parking :) We’re here to help at [email protected] if you have any questions. You can find our terms and services here https://www.spotangels.com/tos
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 Navigation
React Native Maps
Supabase
Axios
Zustand
BUILD KIT DIFFICULTY
Expert
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.
