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
TomTom - Maps & Traffic
TomTom – GPS Navigation App for Every Driver
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
2,731 ratings · Top 15%
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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for TomTom - Maps & Traffic: 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
Stability improvements and error handling.
Assumption to check: Frequent app crashes during navigation.
Validate with people who use this workflow before building.
Hypothesis 2
Offer offline maps and routing.
Assumption to check: Lack of offline functionality.
Validate with people who use this workflow before building.
Hypothesis 3
Allow user-defined waypoints.
Assumption to check: Limited customization of routes.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize search algorithms for faster results.
Assumption to check: Slow loading times for search results.
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
TomTom – GPS Navigation App for Every Driver Meet your new go-to navigation app. Whether you're planning a weekend road trip, commuting to work, or simply exploring new roads, TomTom provides the GPS navigation experience drivers trust. Built with the latest maps, real-time traffic alerts, and precision routing, this navigation app is designed to get you where you need to go—faster and safer. Navigate With Confidence Enjoy detailed turn-by-turn GPS navigation globally. TomTom’s regularly updated maps offer accurate road geometry, lane guidance, and intersection views—so you never miss a turn. It’s smart, flexible, and ready for the road. Real-Time Traffic Information Avoid delays and bottlenecks with accurate traffic data updated in real time. Receive warnings about road closures, congestion, and incidents ahead. With live traffic updates, the app automatically adjusts your navigation route to keep you moving efficiently. Complete Driving Support • More than just a GPS tool, TomTom is your all-in-one driving companion. • Get speed camera alerts and current vs. limit speed info • Choose multiple route types: fastest, shortest, or most efficient • View real-time traffic flows and lane suggestions Apple CarPlay Compatibility Project your GPS navigation experience to your car’s screen with Apple CarPlay. The clean interface is distraction-free—no ads, no pop-ups—just clear maps, directions, and traffic info designed for safer driving. Smart Features for Smarter Navigation TomTom helps you make the most of your drive with essential navigation tools: • Detailed maps for cities and rural areas alike • Community-powered reports for hazards and speed traps • Location-based suggestions for rest stops, food, and services • Reliable ETAs powered by live traffic and real-time rerouting Safe, Private, and Ad-Free Focus on the road ahead. With TomTom, your data stays private, and your navigation is never interrupted by ads or tracking. Download the TomTom GPS Navigation app now – drive smarter with real-time traffic, precise maps, and expert-level GPS navigation. ________________________________________________________________________________________________________________ Use of TomTom app is subject to Terms & Conditions at: https://www.tomtom.com/navigation/mobile-apps/tomtom-app/disclaimer/
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
Zustand
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@react-native-maps
expo-location
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.
