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
Where is my Train - Live Train
Live train status App is one of the best Railways app
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.4
3,650 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 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 Where is my Train - Live Train: 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 better tracking algorithms and data sources for accuracy.
Assumption to check: Inaccurate real-time updates and notifications
Validate with people who use this workflow before building.
Hypothesis 2
Enhance the search algorithm with suggestions and autocomplete.
Assumption to check: Limited search functionality for train numbers and stations
Validate with people who use this workflow before building.
Hypothesis 3
Design a more streamlined layout with collapsible sections.
Assumption to check: Cluttered user interface with too much information at once
Validate with people who use this workflow before building.
Hypothesis 4
Introduce offline caching for train schedules and maps.
Assumption to check: Poor offline functionality and lack of offline maps
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
Live train status App is one of the best Railways app. You can get very fast Live train running status Live train status : Track live train status where is train reach and how many minute train is late and which platform train is arrive. PNR Status : Check PNR Status of your ticket as well as know the check confirmation of your ticket Where is my train is an Unique App designed for Indian Railway travelers with goal of providing accurate details of the running trains to them Find train between two stations with all details like time duration, arrival, departure, running days and etc… Get live train status of Indian Railways anytime, anywhere. This application provides you with live train status, so you can see exactly where your train is at any given time. In addition, this app also provides train timetables, so you can plan your journey in advance, Get the accurate train status with minute to minute reporting and delay prediction for the upcoming stations, Live station to check which trains are arriving and departing on which platform at your selected station. App Features : - Where is my train - Live train running status - Where is my train - live status - Where is my train - live train status - Live train Route/Schedule - Live train status - Train Availability - PNR Check - IRCTC Train Status - Live Trains Status at Station - Live stations - Check Current bookings - Find Railways - Track my train - Locate my train - Get accurate live train status - Search trains between stations - Search nearby places like Hotel, Restaurants, Hospitals, Banks, Atms, Financial services and etc... - Share app, Rate app, Invite friends and more. Best App For Live IRCTC Running Status & Time Table, PNR Status, Live Station Status, All Railway Enquiry. Disclaimer: The app is privately maintained and does not have any affiliation whatsoever to Indian Railways.
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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
Axios
react-navigation
react-native-maps
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.
