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.
PRONTO makes buying fares for MTS and NCTD easier than ever
Free · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Pronto - San Diego: 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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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
Assumption to check: Users find it hard to navigate through multiple transit options.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Real-time updates can be unreliable, leading to confusion.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Payment processing can be cumbersome.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited information on transit routes.
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
PRONTO makes buying fares for MTS and NCTD easier than ever. Add money to your PRONTO app, then scan your phone at the validator each trip you make. Our pay-as-you-go function means you always get the best fare! When using the app, hold your phone 5 to 6 inches below the validator to scan your barcode. The PRONTO app can also help you plan trips, see real-time arrivals, get service statuses, save favorite stations, and find stops for San Diego County area transit so you can plan your trip around San Diego without any problems. Always Get The Best Fare With PRONTO, you can pay-as-you-go* by adding money to your PRONTO account with a credit or debit card. Every time you scan your app, the appropriate one-way fare is deducted from your balance. Look for validators at Trolley, SPRINTER and COASTER stations, and onboard buses. You will never be charged more than a Day Pass ($6 Adult or $3 Reduced Fare) in a given calendar day, regardless of how many trips you make. Likewise, you will never be charged more than a Month Pass ($72 Adult or $23 Reduced Fare) regardless of the number of trips in a calendar month. You can track your progress toward a Day or Month Pass in the PRONTO app. *Pay-as-you go features not available for COASTER (must prepay for Day or Month Pass). Manage Your PRONTO Cards • Register your PRONTO card for balance protection • Load money onto your card using a debit/credit card • Set up autoload to top off your card automatically when your balance gets low • See your balance, current fare, and earned passes • Look up your recent scans, transfer times, and payment history • Manage multiple PRONTO cards for your family or group • Block/Unblock a lost or stolen card Next Departures: • Find Next Departures using stop number, address or landmarks • See real-time bus and train service statuses and news • Map and List view of Nearby Stops • List of recent stops and favorites Trip Planning: • Plan a trip using popular landmarks or addresses • Full trip itineraries with fare information, actual walking distance, and map view • Set alerts to notify you when transit is arriving • See a list of recent trip plans • Save favorite stops for easy access Need More Help? Contact PRONTO Support at 619-595-5636
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.