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Live community ranking · Top 3 free polygon.io tools

Best Free Tools using Polygon.io

The free tools powered by Polygon.io that investors trust most, ranked by the people who actually use them.

Every tool here offers a genuine free tier and leans on Polygon.io data. We filtered 3 total matching tools inside a directory of more than 362 investing platforms down to 3 free options, so you can compare useful zero-cost choices before moving into paid upgrades.

Community-ranked · Free tiers only · Not financial advice

Top 3 Tools

  1. 1
    Koyfin logo
    Top pick
    Koyfin

    Koyfin is a web and mobile research terminal with dashboards, charts, screens, portfolios, news, alerts, transcripts, and market data across equities, funds, macro, FX, commodities, crypto, and yield curves. Free access shows the workflow; paid and Advisor tiers add history, reports, alerts, integrations, and client portfolios. There is no public API.

    Best for
    Investment research workspaceStock screeningCharting
    Portfolio analyticsMarket monitoring
    Watch-outs
    No public APISome downloads are vendor-restricted
    0Data partner votes
    Free tierFree with signup
    PricingFree • From $468/yr
    Platforms
    Visit site
  2. 2
    Stock Analysis logo
    Stock Analysis

    Stock Analysis combines screeners, financial statements, calendars, news, charts, forecasts, watchlists, and portfolios on web and mobile. Paid plans add longer history, higher limits, exports, ETF holdings, broker sync, and analyst filters. The service does not provide brokerage execution, advice, or programmatic data access.

    Best for
    Stock researchStock screeningPortfolio tracking
    ChartingFundamental research
    Watch-outs
    No public APIFree access has ads and data limits
    0Data partner votes
    Free tierFree, no signup
    PricingFree • From $79/yr
    Platforms
    Visit site
  3. 3
    SentiSense logo
    SentiSense

    SentiSense is a beta AI market-intelligence and data API service for stock data, sentiment, news clusters, social signals, institutional flows, insider trades, congressional disclosures, and generated analysis. It supplies research signals, not brokerage or advice.

    Best for
    AI research workspaceMarket monitoringFinancial data API
    Stock researchInsider and institutional tracking
    Watch-outs
    Beta product with plan limitsCoverage claims need caution
    0Data partner votes
    Free tierFree with signup
    PricingFree • From $15/mo
    Platforms
    Visit site

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Spot something off, stale, or missing? Tell us how the free data-partner ranking, vote tallies, or a tool listing could be better.

Curation & Accuracy

This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).

Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.