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
Lyft
Get where you’re going with Lyft.
Free · In-app purchases
OVERALL US RANK
#43
Free · all categories
REVENUE (Est)
$172K/mo
$99K - $245K
RATING
★ 4.9
17,687,487 ratings · Top 5%
Evidence scope: #43 is the current overall US Free chart position. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included19 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 Lyft: map the core Travel 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 feature to estimate wait times and offer alternative ride options.
Assumption to check: Long wait times for rides, especially during peak hours
Validate with people who use this workflow before building.
Hypothesis 2
Introduce a two-way rating system to improve driver accountability.
Assumption to check: Driver quality can vary significantly
Validate with people who use this workflow before building.
Hypothesis 3
Enhance the navigation experience with clearer route guidance and instructions.
Assumption to check: In-app navigation can be confusing
Validate with people who use this workflow before building.
Hypothesis 4
Expand the payment methods available to include more digital wallets and local payment options.
Assumption to check: Limited payment 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
Get where you’re going with Lyft. Whether you’re catching a flight, going out for the night, commuting to the office, or running errands in a rush, the Lyft app offers you multiple ways to get there. EASY TO USE Enter your destination. See your route and ride cost up front. Choose Priority Pickup to get going quick. Boom. Done. Simple CHOOSE YOUR WHEELS Choose from Wait & Save, Priority Pickup, Bikes & Scooters, Lyft XL, Lyft Lux, Transit, or even Rentals. AFFORDABLE RIDES Our Wait & Save option helps you get around for less. And you can find the fastest public transit routes, too. * Lyft ride types may vary by region. Check the app to see what is available in your city. — Prices vary based on market condition. By downloading the app, you agree to allow Lyft to collect your device's language settings.
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
expo-location
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.
