VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Thursday, December 4, 2025

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Tool Comparison

OTC Markets vs Sensor Tower comparison

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

Quick takeaways

OTC Markets adds Data APIs, Order Book / Level II, News, Ticker Changes, Splits, Dividends, Regulatory Filings Monitoring, and Screeners coverage that Sensor Tower skips.

Sensor Tower includes App & Website Traffic categories that OTC Markets omits.

In depth comparison

OTC Markets logo

OTC Markets

otcmarkets.com

Primary operator and market data source for U.S. OTC equities via OTC Link ATS/ECN/NQB (SEC‑regulated ATSs). Commercial data products include Real‑Time Level 1+ (inside quote & trades), Level 2+ (full quote book with MPIDs), 15‑minute delayed Level 1+, End‑of‑Day, reference/security master, and compliance datasets (Blue Sky, Promotion/CE, Compliance Analytics). Delivery options include real‑time multicast feeds, SFTP/FTP files, and a REST Disclosure API. Website provides delayed quotes, corporate actions, screeners and issuer news (DNS).

Platforms

WebAPI

Pricing

FreeSubscription

Quick highlights

  • Real‑Time Level 1+ (inside bid/offer + trades) and Level 2+ (full quote book with market participant IDs) data products; Delayed Level 1+ on a 15‑minute basis; End‑of‑Day snapshots.
  • Level 2 quote montage specification (fields: MPID, price, QAP, size, time‑of‑update) and display requirements.
  • Reference & pricing files (security master with optional CUSIP), plus End‑of‑Day pricing files; secure SFTP delivery supported.
  • Disclosure API (REST, JSON/CSV/XML) with app‑key auth; filter by symbol/CUSIP/company; document retrieval; plan‑level rate‑limit guidance.
  • Compliance & regulatory data: Blue Sky Data (state eligibility monitoring), Promotion Data file (Caveat Emptor/tier/share data), and Compliance Analytics (multi‑factor risk scoring).

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Sensor Tower logo

Sensor Tower

sensortower.com

Mobile app and web intelligence platform covering downloads, usage, advertising, and audience trends. A limited free tier is available, while enterprise add-ons include App Teardown and expanded ASO capabilities such as unlimited keyword tracking and custom alerts. Data is delivered via Connect APIs and scheduled feeds with daily refreshes, available in CSV/Parquet and through Snowflake integration.

Platforms

WebAPI

Pricing

FreeSubscription

Quick highlights

  • App download estimates and advertising intelligence, with insights into audience and market share.
  • App performance tracking for ASO workflows, including keyword opportunities, competitive benchmarking, and Apple Search Ads analysis. Free sign-ups provide limited access.
  • Usage insights built from panel data, showing daily and hourly patterns such as retention, time spent, and session frequency.
  • Advertising insights covering share of voice across networks, creative tracking, and messaging trends.
  • Web Insights module that measures cross-platform behavior across desktop web, mobile web, and apps, with deduplicated user benchmarking.

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Where they differ

OTC Markets

Distinct strengths include:

Data APIsOrder Book / Level IINewsTicker ChangesSplitsDividendsRegulatory Filings MonitoringScreeners
  • Real‑Time Level 1+ (inside bid/offer + trades) and Level 2+ (full quote book with market participant IDs) data products; Delayed Level 1+ on a 15‑minute basis; End‑of‑Day snapshots.
  • Level 2 quote montage specification (fields: MPID, price, QAP, size, time‑of‑update) and display requirements.
  • Reference & pricing files (security master with optional CUSIP), plus End‑of‑Day pricing files; secure SFTP delivery supported.
  • Disclosure API (REST, JSON/CSV/XML) with app‑key auth; filter by symbol/CUSIP/company; document retrieval; plan‑level rate‑limit guidance.

Sensor Tower

Distinct strengths include:

App & Website Traffic
  • App download estimates and advertising intelligence, with insights into audience and market share.
  • App performance tracking for ASO workflows, including keyword opportunities, competitive benchmarking, and Apple Search Ads analysis. Free sign-ups provide limited access.
  • Usage insights built from panel data, showing daily and hourly patterns such as retention, time spent, and session frequency.
  • Advertising insights covering share of voice across networks, creative tracking, and messaging trends.

Feature-by-feature breakdown

AttributeOTC MarketsSensor Tower
Categories

Which research workflows each platform targets

Shared: APIs & SDKs

Unique: Data APIs, Order Book / Level II, News, Ticker Changes, Splits, Dividends, Regulatory Filings Monitoring, Screeners

Shared: APIs & SDKs

Unique: App & Website Traffic

Asset types

Supported asset classes and universes

Stocks, Bonds

Other

Experience levels

Who each product is built for

Beginner, Intermediate, Advanced

Beginner, Intermediate, Advanced

Platforms

Where you can access the product

Web, API

Web, API

Pricing

High-level pricing models

Free, Subscription

Free, Subscription

Key features

Core capabilities called out by each vendor

Unique

  • Real‑Time Level 1+ (inside bid/offer + trades) and Level 2+ (full quote book with market participant IDs) data products; Delayed Level 1+ on a 15‑minute basis; End‑of‑Day snapshots.
  • Level 2 quote montage specification (fields: MPID, price, QAP, size, time‑of‑update) and display requirements.
  • Reference & pricing files (security master with optional CUSIP), plus End‑of‑Day pricing files; secure SFTP delivery supported.
  • Disclosure API (REST, JSON/CSV/XML) with app‑key auth; filter by symbol/CUSIP/company; document retrieval; plan‑level rate‑limit guidance.
  • Compliance & regulatory data: Blue Sky Data (state eligibility monitoring), Promotion Data file (Caveat Emptor/tier/share data), and Compliance Analytics (multi‑factor risk scoring).
  • Coverage of OTC Link ATS via MIC 'OTCM'; OTC Link ATS/ECN/NQB each operate as SEC‑regulated ATSs.

Unique

  • App download estimates and advertising intelligence, with insights into audience and market share.
  • App performance tracking for ASO workflows, including keyword opportunities, competitive benchmarking, and Apple Search Ads analysis. Free sign-ups provide limited access.
  • Usage insights built from panel data, showing daily and hourly patterns such as retention, time spent, and session frequency.
  • Advertising insights covering share of voice across networks, creative tracking, and messaging trends.
  • Web Insights module that measures cross-platform behavior across desktop web, mobile web, and apps, with deduplicated user benchmarking.
  • Connect APIs and scheduled feeds with daily updates, available in CSV or Parquet formats, and direct integration with Snowflake.
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Frequently Asked Questions

Which workflows do OTC Markets and Sensor Tower both support?

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

Do OTC Markets and Sensor Tower require subscriptions?

Both OTC Markets and Sensor Tower keep freemium access with optional paid upgrades, so you can trial each platform before committing.

How can you access OTC Markets and Sensor Tower?

Both OTC Markets and Sensor Tower prioritize web or desktop access. Investors wanting a mobile-first workflow may need to rely on responsive web views.

What unique strengths set the two platforms apart?

OTC Markets differentiates itself with Real‑Time Level 1+ (inside bid/offer + trades) and Level 2+ (full quote book with market participant IDs) data products; Delayed Level 1+ on a 15‑minute basis; End‑of‑Day snapshots., Level 2 quote montage specification (fields: MPID, price, QAP, size, time‑of‑update) and display requirements., and Reference & pricing files (security master with optional CUSIP), plus End‑of‑Day pricing files; secure SFTP delivery supported., whereas Sensor Tower stands out for App download estimates and advertising intelligence, with insights into audience and market share., App performance tracking for ASO workflows, including keyword opportunities, competitive benchmarking, and Apple Search Ads analysis. Free sign-ups provide limited access., and Usage insights built from panel data, showing daily and hourly patterns such as retention, time spent, and session frequency..

Keep exploring

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Stay on top of related tools

Browse the categories and profiles that overlap most with this comparison to round out your shortlist.

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.