App Overview

Koyfin: Market Data & Analysis icon

Koyfin: Market Data & Analysis

Koyfin Inc · Finance

Discover the Koyfin IOS app, part of the all-in-one platform for financial data and analytics, trusted by over half a million investors and rated 9.5 out of 10 for its value in the Kitces Report

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
1,424 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.

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.

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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> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Koyfin: Market Data & Analysis: 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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App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

Screenshots

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App Store description

Discover the Koyfin IOS app, part of the all-in-one platform for financial data and analytics, trusted by over half a million investors and rated 9.5 out of 10 for its value in the Kitces Report. Dive into stock research and catch market trends instantly with live & historical data, the latest news, and tools like customizable charts, watchlists, and stock alerts. Koyfin offers detailed tracking of various assets including equities, ETFs, indices, and more, ensuring your portfolio leads in opportunity. Koyfin syncs across mobile and the web, keeping your data—from market research to portfolio management—synchronized and accessible anytime, anywhere. Complete Data Coverage Gain access to high-quality data, a user-friendly platform, and top trending financial news. A combination of live and delayed data with the global markets coverage for a wide array of assets — equities, ETFs, mutual funds, indices, bonds, forex, futures, and global economics. Quickly grasp the whole picture of the stock market by analyzing prices, key financials, consensus estimates, dividends, and valuation ratios for all global stocks. Custom Watchlists Tailor watchlists with a diverse range of metrics, including price, performance, valuation, estimates, financials, and growth, to enhance your portfolio management and investment tracking experience. Alerts & Notifications Never miss an opportunity with our alert system. Set up price alerts for specific market movements and stay ahead with instant notifications for press releases on equities and watchlists. Market News Stay informed with Koyfin’s enriched news section, featuring real-time press releases, articles, news, and transcripts tailored to your interests. Read market news sourced from the biggest media, including Reuters, Bloomberg, CNBC, and others. Our Reuters news coverage, divided by thematic sections, gives you a real-time edge on what's moving stocks, sectors, and markets. Transform information into power. Market Movers Uncover the hottest stocks trading today on the markets from the major indices or your custom watchlists. Monitor daily stocks with the biggest daily gains, losses, and volume breakouts above their 10-day average in real-time all on one screen. Snapshots Gain the big financial picture with one tap on the phone. Identify market trends that can have a significant impact on investments, large and small. Financial Charts Unlock insight with our brilliant graphing tools that let you visualize stock performance. Analyze historical price charts to identify trends and spot investment opportunities. See performance charts to highlight the actual rate of return over any period. Earnings Estimates & Price Target Keep an eye on earnings estimates and determine what the stock is worth and where the price will be to pinpoint your potential investment opportunities. Custom Themes Just make it yours. Choose from the carefully designed Koyfin color themes to make the app interface pleasant to your eye. Free on mobile Koyfin app is absolutely free to download — unlock insights, no matter your budget! Please check https://www.koyfin.com/pricing/ for more details. ------------------------------------------------------------ Terms of use: https://app.koyfin.com/terms-and-conditions Privacy policy: https://app.koyfin.com/privacy-policy

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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

Improve API connections for real-time data updates.

Assumption to check: Limited integration with financial data sources

Validate with people who use this workflow before building.

Hypothesis 2

Optimize app performance for various device specifications.

Assumption to check: Inconsistent performance on older devices

Validate with people who use this workflow before building.

Hypothesis 3

Simplify navigation and reduce screen clutter for better user experience.

Assumption to check: Cluttered user interface

Validate with people who use this workflow before building.

Hypothesis 4

Allow users to customize their watchlist views and metrics.

Assumption to check: Limited customization options for watchlists

Validate with people who use this workflow before building.

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.

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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.