Market Census vs OptionSpace

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Market Census compared with OptionSpace
Detail	Market Census	OptionSpace
What it does	Making sense of the market	Volatility data and research tools powered by a market-maker-grade fitting and pricing engine
Stage	Startup	Not given
Founded	2026	Not given
Based in	AU	US
Pricing model	Freemium	Freemium
Pricing	Free: US$0 a month. Premium: US$9.99 a month or US$99 per year.	Free sample plan with no card required. Retail subscription available for individual personal use in the United States with daily limits on API credits. Institutional plans available at contact pricing for any business use with annual licenses invoiced monthly via ACH or wire. Higher-frequency data
Key features	Score each stock and ETF from 0 to 100 with plain English explanation Fresh daily rankings of strongest stocks Portfolio tracking with email alerts Crypto scores out of 100 Commodities and currency pair tracking SEC Form 4 insider buying data Stock comparison tool Performance comparison to S&P 500 and Bitcoin Market mood indicator across sectors	Fitted volatility surfaces with bid-ask-weighted curves across every expiration Accounts for American-style options with early exercise, discrete dividends, and implied borrow rates One-minute granularity historical data across 140+ symbols spanning 10 years Realized volatility calculations from 385 intraday returns per day Vol Screener, Vol Premium, Skew Scanner, and Earnings Vol analysis tools Historical simulation using actual bid-ask prices and fitted vol surfaces Python package for research workflows Interactive visual dashboards for surface inspection and event studies Model Context Protocol (MCP) integration for AI agent workflows Greeks and constant-maturity metrics via API and dashboards
What makes it different	Plain English explanations instead of charts and jargon Covers 3,900 stocks and ETFs plus crypto, commodities and currencies in one app Fresh scores about once a day Free tier with no card required	Arbitrage-free fitted volatility wings extending beyond quoted book using Lee-moment discipline Accessible to quantitative researchers and AI workflows through Python, API, and MCP without requiring market-maker infrastructure 10 years of consistent historical data at one-minute granularity across 140+ symbols for rigorous backtesting
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	0	0
Citation Flow (Majestic)	9	0
Referring domains (Majestic)	4	0

6 details filled in for both companies.

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