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.
Trip Ledger is the simplest way to split expenses with friends on shared trips
$0.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Orion Trip Ledger: 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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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
Assumption to check: Users struggle to keep track of expenses across multiple trips
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Difficulty in managing budgets effectively
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited features for expense categorization
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of reporting tools
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Trip Ledger is the simplest way to split expenses with friends on shared trips. Whether you're road-tripping, weekending in a cabin, or backpacking abroad,Trip Ledger keeps the math out of your way so the trip stays fun. Add expenses as they happen, choose how to split them, and let Trip Ledger figure out who owes whom at the end. When someone pays back, record it in seconds — and look back at every change in the trip's full activity timeline. BUILT FOR REAL GROUPS • Create a trip in seconds and invite friends by email • Add expenses by category — flight, lodging, food, transport, activity, or other • Choose how each expense is split: equally, by exact amount, or by percentage • Track multiple trips at once and archive the ones that are done REAL SETTLEMENTS, NOT JUST SUGGESTIONS Most expense-splitters stop at "X owes Y $50." Trip Ledger goes further: • See who should pay whom to settle up with the fewest transactions • Record actual payments between members — Trip Ledger keeps the books straight • Reverse a payment if you made a mistake, no spreadsheet archaeology required ACTIVITY TIMELINE Every expense, edit, and payment is captured in a chronological feed. See what changed, when, and by whom — with edits rendered as proper diffs ("Alice changed Dinner from $80 to $100") instead of mysterious entries. MULTI-CURRENCY Pick the currency that matches your trip — USD, EUR, GBP, INR, JPY, and more — so the totals always make sense. DESIGNED TO STAY OUT OF THE WAY • Dark theme by default — easy on the eyes, especially when checking a bill in a dim restaurant • Built for one-handed use on the go • No ads. No third-party tracking. YOUR DATA STAYS YOURS We collect what's needed to run your account — your email and the trips you create — and nothing else. We don't profile you, sell your data, or share it with advertisers. Whether it's a weekend with the in-laws, a college reunion abroad, or a long weekend ski trip, Trip Ledger keeps the money side of group travel simple — so you can focus on the trip, not the tally.
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.