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
Phone Location GPS Tracker
Loc365 offers a reliable solution for tracking the location of your loved ones
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.3
162 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/
Preview a sample Build Kit No email needed
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 Phone Location GPS Tracker: 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 GPS algorithms and user feedback systems.
Assumption to check: Inaccurate location tracking at times
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to set custom alert conditions and notifications.
Assumption to check: Limited customization for alerts
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the interface with clearer navigation and larger touch targets.
Assumption to check: UI may feel cluttered
Validate with people who use this workflow before building.
Hypothesis 4
Provide clearer explanations of subscription benefits and a simplified upgrade process.
Assumption to check: In-app purchases can be confusing
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
Loc365 offers a reliable solution for tracking the location of your loved ones. Our app ensures you can stay connected and informed about the whereabouts of your family and friends, providing peace of mind regarding their safety. Key Features: Location Tracking: Stay updated with map views of your loved ones' current locations. Precise GPS Tracking: Pinpoint the exact whereabouts of family members and friends in real-time. Location History: Review detailed past location data to see their movements. Geofence Alerts: Set up notifications for entries and exits from designated zones. Device Locator: Locate lost or stolen phones using another family member's registered device. Place Notifications: Receive alerts when family members arrive at or depart from specific locations like home or school. Privacy and Consent: Location sharing is strictly based on mutual consent to respect privacy. How It Works: Add your family members' phone numbers to the app. They accept the invitation and share their location. Track their real-time location on the map effortlessly. Why Loc365? Simple Setup: Add family members by phone number and start tracking immediately. Peace of Mind: Ensure the safety of your children, elderly parents, and loved ones at all times. Lost Phone Recovery: Effortlessly locate your lost or stolen phone using our app. Please be aware that continuous use of location services may impact battery life. Subscription Details: Loc365 offers a premium subscription plan featuring unlimited location alerts, extended location history, and an ad-free experience. Choose from weekly, monthly, or yearly subscription plans. Payment will be charged to your iTunes account upon confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Manage your subscriptions in your account settings. By using Loc365, you agree to our Privacy Policy and Terms of Use: Privacy Policy: https://map.rcosoft.com/ios/privacy.html Terms of Use: https://map.rcosoft.com/ios/terms.html
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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.
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BUILD KIT DIFFICULTY
Expert
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.
