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
Freedom Trail GPS Audio Guide
Step Into History: A Revolutionary Journey for the Whole Family!
$14.99 · In-app purchases
PRICE
$14.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.9
12 ratings · Top 5%
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 included15 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 Freedom Trail GPS Audio Guide: 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 offline caching for audio files.
Assumption to check: Limited offline access to audio content
Validate with people who use this workflow before building.
Hypothesis 2
Enhance GPS tracking and allow manual location adjustments.
Assumption to check: GPS accuracy issues at certain locations
Validate with people who use this workflow before building.
Hypothesis 3
Introduce user reviews and ratings for audio tours.
Assumption to check: Lack of user-generated content or reviews
Validate with people who use this workflow before building.
Hypothesis 4
Offer a freemium model with limited tours available for free.
Assumption to check: High price point may deter users
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
Step Into History: A Revolutionary Journey for the Whole Family! Explore Boston’s iconic past like never before! This self-guided audio tour takes you through the heart of the American Revolution, immersing you in the stories of bravery, rebellion, and the birth of a nation. Designed for adults and kids alike, this experience is as educational as it is entertaining, making it the perfect family adventure. 3 Iconic Tours in One App ▶ Freedom Trail: Walk the historic path of the American Revolution, featuring landmarks like Boston Common, Old North Church, and Faneuil Hall. ▶ Bunker Hill: Uncover the gripping stories of one of the Revolution’s most pivotal battles and explore the monument that commemorates it. ▶ Boston Harborwalk: Discover the city’s waterfront legacy, from the Boston Tea Party to the shipbuilding era. Why Families Love This App ▶ Educational & Entertaining: Captivating stories narrated by professionals bring history to life for all ages. ▶ Perfect for Kids: Fun facts and vivid storytelling keep young minds engaged at every stop. ▶ Flexible Exploration: Tour on your schedule—start, pause, or skip stops as you like. ▶ Exceptional Value: Three tours for the price of one, offering an affordable and enriching family outing. Key Features ■ GPS-Triggered Audio: Let the app guide you seamlessly as stories play automatically when you approach each landmark. ■ Offline Access: Download the tours in advance and explore without relying on Wi-Fi or mobile data. ■ Immersive Experience: Walk in the footsteps of the Founding Fathers and witness where history was made. ■ Iconic Stops: Explore landmarks like the Boston Massacre Site, Granary Burying Ground, Paul Revere House, and USS Constitution. Special Highlights for Kids ■ Imagine Paul Revere’s Midnight Ride: Stand at Old North Church and learn how lanterns signaled revolution. ■ Explore Revolutionary Burying Grounds: Hear stories of the heroes who shaped America’s fight for independence. ■ Experience the Boston Tea Party: Discover how rebels sparked a revolution by tossing tea into Boston Harbor. ■ Climb Bunker Hill Monument: Kids will love the adventure of scaling 294 steps to the top of this historic landmark. ■ Discover Hidden Symbols: Find unique carvings and symbols on gravestones in the Granary Burying Ground. Your Revolutionary Journey Awaits! With "Step Into History: A Revolutionary Journey for the Whole Family," Boston’s history comes alive in an exciting and memorable way. Whether you’re a history buff, a curious traveler, or a family looking for a meaningful day out, this app is your ultimate companion. Note: Ensure your device is fully charged, as GPS can drain battery life. Download the app and tours over Wi-Fi before starting.
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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 Navigation
Expo Location
Axios
Zustand
React Native Maps
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.
