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
Stock Events Portfolio Tracker
Trusted by over 1 million investors worldwide
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
2,145 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 included17 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 Stock Events Portfolio 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
Implement better filtering and categorization for events.
Assumption to check: Difficulty in tracking multiple stock events simultaneously
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to customize their portfolio display and sorting.
Assumption to check: Limited customization options for portfolio views
Validate with people who use this workflow before building.
Hypothesis 3
Integrate live stock price feeds for up-to-date information.
Assumption to check: Lack of real-time updates on stock prices
Validate with people who use this workflow before building.
Hypothesis 4
Simplify navigation and enhance onboarding experience.
Assumption to check: Confusing navigation structure
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
Trusted by over 1 million investors worldwide. Stock Events is the portfolio tracker that keeps you ahead of every dividend, earnings call, and market event. Know exactly when your next dividend lands. See every earnings call before it happens. Watch your passive income grow, month after month. YOUR ENTIRE PORTFOLIO, ONE CLEAR VIEW Stocks, ETFs, funds, bonds, crypto, and commodities across 50+ global exchanges - tracked together, in any mix of currencies. See your true performance, profit and loss, and total return without juggling broker apps and spreadsheets. NEVER MISS A PAYOUT Your personal dividend calendar shows upcoming payments, ex-dividend dates, and payout history at a glance. Follow your annual income, yield on cost, and how your passive income compounds over time. Built for income investors and the FIRE community. STAY AHEAD OF EVERY EVENT Get notified before earnings calls, dividend announcements, IPOs, and the market events that move your holdings - instead of finding out after the fact. AT A GLANCE, EVERYWHERE Home screen widgets keep your portfolio one swipe away. Custom price alerts tell you the moment something needs your attention. Dig deeper with analyst ratings, ETF holdings, sector and regional exposure, and curated news. GO PRO WHEN YOU'RE READY Unlock unlimited watchlists, Excel and Google Sheets connections, an advanced stock screener, custom assets, and calendar sync. Your money works long-term. Your tracker should too. Download Stock Events free and take control of your investments today. Terms of Service: https://stockevents.app/en/terms Privacy Policy: https://stockevents.app/en/privacy
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-native-chart-kit
react-navigation
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.
