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
One Bag: Smart Packing List
Pack lighter
$0.99
PRICE
$0.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 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/
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 One Bag: Smart Packing List: 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 templates and quick add features to streamline the process.
Assumption to check: Users may find it tedious to create packing lists from scratch.
Validate with people who use this workflow before building.
Hypothesis 2
Enable users to share packing lists with friends or family.
Assumption to check: Lack of sharing options for packing lists.
Validate with people who use this workflow before building.
Hypothesis 3
Add notification features to remind users about packing timelines.
Assumption to check: No reminders or notifications for packing deadlines.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce categorization and sorting features for easier management.
Assumption to check: Limited item categorization or sorting options.
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
Pack lighter. Travel smarter. One Bag is a minimalist packing app designed for travelers who care about what they carry and how much it weighs. Whether you're a one-bag traveler, backpacker, or minimalist explorer, One Bag helps you build the perfect packing list while accounting for baggage weight. As you add items to your list, One Bag automatically calculates the total weight of your gear, helping you pack lighter and avoid overloading your bag. All items you add are saved automatically, so you can quickly reuse gear from previous trips instead of rebuilding packing lists every time. Adding items you’ve packed before takes seconds, making it easy to plan new trips faster. AUTOMATIC WEIGHT TRACKING - Instantly calculate the total weight of your bag - Track individual item weights - Optimize your packing before every trip REUSABLE PACKING ITEMS - Items you add are saved for future trips - Quickly add gear you’ve packed before - Build new packing lists in seconds MINIMALIST PACKING LISTS - Clean, distraction-free interface - Quickly organize your travel gear - Designed for fast trip planning BUILD FOR ONE BAG TRAVEL - Ideal for ultralight and minimalist travelers - Perfect for carry on and backpack travel - Helps you pack only what you need PERFECT FOR - One bag travelers - Ultralight travel enthusiasts - Backpackers - Digital nomads - Minimalist travelers - Carry on travelers - Minimalist travelers Download One Bag and start packing smarter today! Privacy Policy: https://apphelion.dev/one-bag/privacy_policy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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
@react-navigation/native
react-native-paper
react-native-gesture-handler
Zustand
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.
