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
Nworth: Net Worth Tracker
Nworth — Track Everything
$5.99 · In-app purchases
PRICE
$5.99
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 Nworth: Net Worth Tracker: map the core Finance 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 a consolidated view of all accounts with easy toggling.
Assumption to check: Users often find it hard to manage multiple accounts in one view.
Validate with people who use this workflow before building.
Hypothesis 2
Implement automatic transaction categorization and entry.
Assumption to check: Manual entry of transactions can be tedious.
Validate with people who use this workflow before building.
Hypothesis 3
Add detailed reports and analytics on spending trends.
Assumption to check: Limited analytics features for spending habits.
Validate with people who use this workflow before building.
Hypothesis 4
Simplify settings with user-friendly descriptions and guided setup.
Assumption to check: Some users feel overwhelmed by the settings 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
Nworth — Track Everything. Share Nothing. Nworth is a privacy-first net worth tracker that runs entirely on your iPhone. No account. No sign-up. No cloud. No bank or brokerage connections. Your financial data never leaves your device. See your entire financial picture in one place, and watch your net worth update in real time as markets move. TRACK YOUR FULL NET WORTH Investments — stocks, ETFs, crypto, bonds, REITs, and funds Cash and bank accounts Debts and loans — mortgage, auto, student, credit cards Real estate and property Everything rolls up into one live net worth figure You enter your data manually — no bank feeds, no OAuth, no third-party account linking, ever. LIVE MARKET DATA Automatic price updates from multiple sources for reliability Daily change, today's gain/loss, and total gain/loss per holding Cost basis and allocation calculated for you POWERFUL CHARTS Net worth and portfolio growth over time Asset allocation by type and sector Performance and gain/loss breakdowns Compare your portfolio against market benchmarks AI PORTFOLIO INSIGHTS (OPTIONAL) Get analysis of your portfolio, risk, and diversification Bring your own AI key (Claude, OpenAI, or any Model) — you stay in control CUSTOMIZE IT YOUR WAY Show, hide, and reorder columns in your holdings table Light, Dark, or System theme (auto-switches by time of day) Fast, private sign-in with Face ID or Touch ID OWN YOUR DATA Export everything as JSON or CSV, anytime Import from a backup in one tap Automatic on-device backups on your schedule (daily, weekly, monthly) Switching or resetting your phone? Export a backup first — since your data lives only on this device, we recommend saving a copy before you upgrade, reset, or reinstall Built-in "Know Your App" guide so you're never stuck PRIVACY BY DESIGN Nworth has no servers, no telemetry, and no connections to any bank, brokerage, or trading platform. There is no Plaid, no Open Banking, no OAuth — nothing. You enter your holdings manually, and they stay on your device. The only network requests Nworth ever makes are anonymous market-price lookups for the tickers you add. That's it. Track everything. Share nothing.
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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.
SUGGESTED BUILD STACK
React Native
Expo
Plaid API
Axios
Zustand
React Navigation
BUILD KIT DIFFICULTY
Intermediate
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.
