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
Find My Car - Car Parking
Never Forget Where You Parked Your Car!
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
1,740 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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 Find My Car - Car Parking: 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 a search function for saved locations.
Assumption to check: Difficult to find saved locations quickly
Validate with people who use this workflow before building.
Hypothesis 2
Enhance map performance and accuracy with real-time updates.
Assumption to check: Maps can lag or be inaccurate
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to add notes or photos for each saved spot.
Assumption to check: Limited customization options for marked locations
Validate with people who use this workflow before building.
Hypothesis 4
Clarify benefits of paid features with a clear tutorial.
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
Never Forget Where You Parked Your Car! Tired of forgetting where you left your car? Or getting parking fines because your meter expired? With Find My Car, you’ll always know where you parked—and when to get back to your vehicle. Whether you're in a crowded city, a huge parking lot, or an unfamiliar neighborhood, Find My Car helps you relocate your vehicle stress-free with powerful features designed for everyday drivers. Key Features: ► Save Your Parking Location Automatically Instantly save your car’s location using GPS so you never forget where you parked. ► Fine-Tune with Drag & Drop Adjust the parking pin manually for precise location accuracy. ► Share Your Location Let others know where the car is with easy sharing—perfect for shared vehicles or group trips. ► Route Guidance to Your Car Get walking directions and distance estimates via Apple Maps, Google Maps, or Navigon. ► Built-In Compass Navigate easily using the compass to guide you in the right direction. ► Photo Reminder Take a quick picture of your surroundings to help remember your exact spot, especially in large parking garages. ► Parking Timer & Alerts Set a timer when you park—get push notifications before your meter expires, even if the app is closed. ► Notes & Memos Add notes like parking level, zone number, or any other helpful detail. ► Spot-Me Button Always know your current location on the map with one tap. ► Offline Access Once saved, your parking location stays on your device—even if you close the app. Smart Features Built for Everyday Use - Easy sharing with passengers or family members - Alerts that work even when the app isn’t running - Real-time distance and ETA updates - Offline functionality so you’re always covered Find My Car is the ultimate parking companion—simple, reliable, and built to save you time and frustration. Download Find My Car now and never lose your parking spot again! More Infos: http://findmycar.donner.io/privacy-policy.html http://findmycar.donner.io/terms-of-service.html
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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
React Navigation
react-native-maps
@react-native-async-storage
expo-location
BUILD KIT DIFFICULTY
Intermediate
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.
