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
Packix
Packix is a private packing desk for solo business travelers
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 Packix: 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 a multi-trip planner to manage itineraries.
Assumption to check: Users often find it hard to organize multiple trips effectively.
Validate with people who use this workflow before building.
Hypothesis 2
Include an in-app messaging system for direct communication.
Assumption to check: Lack of clear communication channels with hosts.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to add personal notes and customize itineraries.
Assumption to check: Limited customization options for trip details.
Validate with people who use this workflow before building.
Hypothesis 4
Enhance search functionality with advanced filters based on user preferences.
Assumption to check: Difficulty in finding suitable destinations based on preferences.
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
Packix is a private packing desk for solo business travelers. In Listix, follow your standard luggage pack matrix with category sections, outfit photos, and short voice packing notes—watch your completion ring fill as items get checked off. Weighx stores your weight calculator matrix: assign each item to carry-on or checked slots, see running subtotals, and spot over-limit states before you reach the airport. Triplx saves trip profiles with route labels, departure dates, and links to your pack and weight data—duplicate recurring routes as templates when you fly the same lane again. Export Travel Pack Cards to your photo library when you need a snapshot for your travel folder. Optional Pack Coins unlock extra HD exports through consumable in-app purchases. Photos and voice notes are free. Everything stays on your device. Open Terms of Service and Privacy Policy inside the app before first use. Packix respects system Light and Dark Mode.
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
Supabase
Zustand
React Navigation
BUILD KIT DIFFICULTY
Starter
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.
