VOL. XCIV, NO. 247

★ A CURATED DIRECTORY OF FINANCIAL TOOLS ★

PRICE: 5 CENTS

Saturday, December 13, 2025

Tool Comparison

Listen Notes vs marketstack comparison

Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.

Quick takeaways

Listen Notes adds Alerts, Education, and Other coverage that marketstack skips.

marketstack includes Dividends, Splits, ETF Holdings, Interest Rates, Analyst Recommendations, and Analyst Price Targets categories that Listen Notes omits.

Listen Notes ships a mobile app. marketstack is web/desktop only.

In depth comparison

Listen Notes logo

Listen Notes

listennotes.com

Podcast search engine plus developer Podcast API (search/directory/insights) and purchasable datasets. Free plan allows light testing; PRO is a metered subscription with tiered overages and specific search‑result/rate‑limit allowances; Enterprise relaxes caching/logo rules and increases quotas & SLAs. Listen Alerts monitors 3.6M+ podcasts for keyword mentions with email/RSS and Zapier/IFTTT hooks. Datasets can be exported as CSV/SQLite for analytics, PR/sales, and finance alt‑data use cases. API base URL is https://listen-api.listennotes.com/api/v2 with API‑key auth.

Platforms

WebAPIMobile

Pricing

FreeSubscriptionOne-time

Quick highlights

  • Podcast API v2: search, directory, insights; official client libraries; OpenAPI spec & mock server for keyless testing.
  • Pricing tiers with concrete quotas: FREE (300 req/mo), PRO (base fee with 5k req/mo included + tiered overages), ENTERPRISE (annual contract, larger quotas, relaxed caching/no-logo).
  • Plan-based search result caps & rate limits: FREE up to 30 results/query (2 req/s, 20 req/min); PRO up to 300 results/query (medium rate limit); ENTERPRISE up to 10,000 results/query (high rate limit).
  • Advanced fields & endpoints on higher tiers: transcripts, batch fetch, RSS/large image, email, latest_episode_id, Listen Score & Global Rank.
  • Listen Alerts: 24/7 monitoring of new episodes mentioning keywords; daily email digests, per‑alert RSS feeds; connects via Zapier/IFTTT and RSS to Slack/Trello/Airtable etc.

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marketstack logo

marketstack

marketstack.com

A global market data API with free and paid tiers. End-of-day coverage spans 15+ years and 500k+ tickers, while intraday and real-time access are unlocked on higher plans. Rate limits apply: 5 requests per second globally, with some endpoints (like ETF holdings) counting as multiple calls. Premium tiers add features like SEC/EDGAR filings, analyst ratings, and bond/index data. Data is sourced from Tiingo for U.S. markets, and uptime is tracked on a public status page.

Platforms

WebAPI

Pricing

FreeSubscription

Quick highlights

  • RESTful JSON API with secure API key access, HTTPS transport, and a 5 requests/sec global limit.
  • End-of-day data with 15+ years of history across 500,000+ tickers, including MIC-level filtering and adjusted fields (open, close, volume).
  • Intraday data for U.S. markets via IEX, with intervals from 1–60 minutes. Real-time reference prices are derived from IEX feeds; some fields require separate entitlements.
  • Professional and higher tiers include real-time stock prices with minute-level updates (1 API call per minute rate cap).
  • Corporate actions endpoints for dividends and stock splits.

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Where they differ

Listen Notes

Distinct strengths include:

  • Podcast API v2: search, directory, insights; official client libraries; OpenAPI spec & mock server for keyless testing.
  • Pricing tiers with concrete quotas: FREE (300 req/mo), PRO (base fee with 5k req/mo included + tiered overages), ENTERPRISE (annual contract, larger quotas, relaxed caching/no-logo).
  • Plan-based search result caps & rate limits: FREE up to 30 results/query (2 req/s, 20 req/min); PRO up to 300 results/query (medium rate limit); ENTERPRISE up to 10,000 results/query (high rate limit).
  • Advanced fields & endpoints on higher tiers: transcripts, batch fetch, RSS/large image, email, latest_episode_id, Listen Score & Global Rank.

marketstack

Distinct strengths include:

  • RESTful JSON API with secure API key access, HTTPS transport, and a 5 requests/sec global limit.
  • End-of-day data with 15+ years of history across 500,000+ tickers, including MIC-level filtering and adjusted fields (open, close, volume).
  • Intraday data for U.S. markets via IEX, with intervals from 1–60 minutes. Real-time reference prices are derived from IEX feeds; some fields require separate entitlements.
  • Professional and higher tiers include real-time stock prices with minute-level updates (1 API call per minute rate cap).

Feature-by-feature breakdown

AttributeListen Notesmarketstack
Categories

Which research workflows each platform targets

Shared: Data APIs, APIs & SDKs

Unique: Alerts, Education, Other

Shared: Data APIs, APIs & SDKs

Unique: Dividends, Splits, ETF Holdings, Interest Rates, Analyst Recommendations, Analyst Price Targets

Asset types

Supported asset classes and universes

Other

Stocks, ETFs, Bonds, Commodities

Experience levels

Who each product is built for

Beginner, Intermediate, Advanced

Intermediate, Advanced

Platforms

Where you can access the product

Web, API, Mobile

Web, API

Pricing

High-level pricing models

Free, Subscription, One-time

Free, Subscription

Key features

Core capabilities called out by each vendor

Unique

  • Podcast API v2: search, directory, insights; official client libraries; OpenAPI spec & mock server for keyless testing.
  • Pricing tiers with concrete quotas: FREE (300 req/mo), PRO (base fee with 5k req/mo included + tiered overages), ENTERPRISE (annual contract, larger quotas, relaxed caching/no-logo).
  • Plan-based search result caps & rate limits: FREE up to 30 results/query (2 req/s, 20 req/min); PRO up to 300 results/query (medium rate limit); ENTERPRISE up to 10,000 results/query (high rate limit).
  • Advanced fields & endpoints on higher tiers: transcripts, batch fetch, RSS/large image, email, latest_episode_id, Listen Score & Global Rank.
  • Listen Alerts: 24/7 monitoring of new episodes mentioning keywords; daily email digests, per‑alert RSS feeds; connects via Zapier/IFTTT and RSS to Slack/Trello/Airtable etc.
  • Podcast Datasets: batch export by keyword/category/playlist/iTunes IDs or full‑database Enterprise export; delivered as CSV or SQLite.

Unique

  • RESTful JSON API with secure API key access, HTTPS transport, and a 5 requests/sec global limit.
  • End-of-day data with 15+ years of history across 500,000+ tickers, including MIC-level filtering and adjusted fields (open, close, volume).
  • Intraday data for U.S. markets via IEX, with intervals from 1–60 minutes. Real-time reference prices are derived from IEX feeds; some fields require separate entitlements.
  • Professional and higher tiers include real-time stock prices with minute-level updates (1 API call per minute rate cap).
  • Corporate actions endpoints for dividends and stock splits.
  • ETF holdings data (Basic+ plans and above) with identifiers like ISIN and CUSIP; each request consumes 20 API calls.
Tested

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Frequently Asked Questions

Which workflows do Listen Notes and marketstack both support?

Both platforms cover Data APIs, and APIs & SDKs workflows, so you can research those use cases in either tool before digging into the feature differences below.

Do Listen Notes and marketstack require subscriptions?

Both Listen Notes and marketstack keep freemium access with optional paid upgrades, so you can trial each platform before committing.

Which tool has mobile access?

Listen Notes ships a dedicated mobile experience, while marketstack focuses on web or desktop access.

What unique strengths set the two platforms apart?

Listen Notes differentiates itself with Podcast API v2: search, directory, insights; official client libraries; OpenAPI spec & mock server for keyless testing., Pricing tiers with concrete quotas: FREE (300 req/mo), PRO (base fee with 5k req/mo included + tiered overages), ENTERPRISE (annual contract, larger quotas, relaxed caching/no-logo)., and Plan-based search result caps & rate limits: FREE up to 30 results/query (2 req/s, 20 req/min); PRO up to 300 results/query (medium rate limit); ENTERPRISE up to 10,000 results/query (high rate limit)., whereas marketstack stands out for RESTful JSON API with secure API key access, HTTPS transport, and a 5 requests/sec global limit., End-of-day data with 15+ years of history across 500,000+ tickers, including MIC-level filtering and adjusted fields (open, close, volume)., and Intraday data for U.S. markets via IEX, with intervals from 1–60 minutes. Real-time reference prices are derived from IEX feeds; some fields require separate entitlements..

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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.