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
myStop Mobile
myStop® Mobile puts real-time bus information and trip planning in your hands
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.4
12,239 ratings · Top 30%
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 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 myStop Mobile: 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 more reliable data fetching and state management.
Assumption to check: Inconsistent real-time tracking updates
Validate with people who use this workflow before building.
Hypothesis 2
Add offline map access and saved routes.
Assumption to check: Limited offline functionality
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the interface for better user experience.
Assumption to check: Cluttered UI with too much information
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to customize alert settings for arrivals.
Assumption to check: Lack of customization options for notifications
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
myStop® Mobile puts real-time bus information and trip planning in your hands. Quickly and easily access interactive location and schedule information for more than 39 public transit agencies across the US. myStop® Mobile has been updated to bring you improved performance and usability with an enhanced look & feel. Use myStop® Mobile for: • Trip planning enhanced by Google Search • Quick access to service alerts • Integrated email & SMS notifications — so you don’t miss your bus • Navigation to the nearest stop • Real-time graphical bus tracking — see where your bus is on the map • Determining bus capacity — so you can ride in comfort Agencies currently using myStop® Mobile include: Acadia National Park ACC Transit (Athens, GA) AMTRAN (Altoona, PA) Antelope Valley – AVTA (Lancaster, CA) Atomic City Transit – ACT (Los Alamos, NM) BARTA (Reading, PA) Butler Transit (Butler, PA) Camtran (Johnstown, PA) CATA Bus (State College, PA) Collier County (Naples, FL) COLTS (Scranton, PA) Citrus Connection (Lakeland, FL) Erie, PA Gwinnett County, GA HDPT (Harrisonburg, PA) Hazleton, PA IndiGO (Indiana, PA) IndyGo (Indianapolis, IN) KMetro (Kalamazoo, MI) LANTA (Allentown, PA) Lebanon Transit (Lebanon, PA) Lextran (Lexington, KY) MAX Transit (Birmingham, AL) MAX (Modesto, CA) METRO (Akron, OH) MCAT (Manatee County, Florida) Montebello Bus Lines (Montebello, CA) Monroe County – MCTA, Pocono Pony (Scotrun, PA) Napa – Vine (Napa, CA) NCRTD Blue Bus (Los Alamos, NM) Norwalk, CT PalmTran (West Palm Beach, FL) Park City, UT Petaluma, CA PVTA (Springfield, MA) Rabbit Transit (York, PA) The Rapid (Grand Rapids, MI) River Valley Transit (Williamsport, PA) Red Rose Transit Authority – RRTA (Lancaster, PA) Santa Rosa, CA SolTrans (Vallejo, CA) Sunline Transit (Thousand Palms, CA) Suntran (Ocala, FL) STS (Lebanon, PA) SVSS (Shenango Valley, PA) Votran (Volusia County, FL) TCAT (Ithaca, NY) The Wave (Mobile, AL) Wichita, KS WRTA (Youngstown, OH)
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.
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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.
