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
FedEx Mobile
Ship smarter
Free · In-app purchases
OVERALL US RANK
#99
Free · all categories
REVENUE (Est)
$72K/mo
$39K - $106K
RATING
★ 4.6
397,920 ratings · Top 15%
Evidence scope: #99 is the current overall US Free chart position. 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/
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 FedEx Mobile: map the core Business 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
Provide more detailed tracking for international shipments.
Assumption to check: Limited tracking options for international shipments
Validate with people who use this workflow before building.
Hypothesis 2
Implement a more intuitive navigation flow.
Assumption to check: Difficult to navigate to certain features
Validate with people who use this workflow before building.
Hypothesis 3
Ensure real-time updates for tracking statuses.
Assumption to check: Inconsistent update frequency for shipment statuses
Validate with people who use this workflow before building.
Hypothesis 4
Add offline capabilities for tracking and managing shipments.
Assumption to check: Lack of offline functionality
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
Ship smarter. Track easier. Manage better. Take control of your deliveries with the FedEx® Mobile app — designed for convenience and compatible with Apple Watch. Track Your Packages Enroll in FedEx Delivery Manager® to personalize your delivery experience* View packages in real time with an interactive map* Place a hold at a nearby FedEx location or set a vacation hold* Add delivery instructions for your driver* Sign for packages directly from your iPhone* Receive push notifications for instant updates* See photo proof of delivery or missed attempts* View your driver’s name and photo* Add a tracking widget to your home screen Scan door tags for quick access to delivery options* Ship with Ease Create domestic or international shipping labels - print from your phone or use a QR code to print at FedEx** Use your iPhone to measure packages for accurate rates Get real-time shipping rates Schedule and manage pickups with ease** Maximize Your Experience Enable permissions for Face ID, Location, Camera, and Push Notifications to unlock full functionality - including easy login, nearby drop-off searches, barcode scanning, package measuring, and instant status alerts. *Available in select regions **Shipping administration rules apply
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.
