Unusual Whales is built around order-flow data: unusual options activity, sweeps, dark-pool prints and alerts, plus community and news features. Optionscanner is built around a rules engine: it screens a universe against criteria you can read and edit, checks your positions against exit rules you adopt, and runs a paper-first agent, with every number's inputs on screen. The two answer different questions, and some traders use both.
How this page was written: from each product's public materials as read in September 2026, and from what Optionscanner does as deployed. Features and prices change; check each site for current details. This is a description of tools, not advice about which to buy or what to trade.
Unusual Whales is primarily a flow-data product. Its core is options order flow: unusual activity, large sweeps and blocks, dark-pool prints, and alerts when something out of the ordinary trades, alongside news, politician-trading disclosures and a large community. The question it answers is "what is the market doing right now that I would not otherwise see?"
Optionscanner is a rules-based analytics desk on your own brokerage feed. It screens a universe against criteria that are visible and editable, grades a setup on volatility, liquidity, event risk and direction, builds the trade on a chart with its probability cone, checks your open positions against exit rules you adopt, and runs a paper-first agent under those rules. The question it answers is "does this setup meet my rules, and what exactly would the trade be?"
Both offer screeners and per-ticker option analytics such as implied volatility, skew and expected move, and both have educational content. The overlap is real but shallow: the screener in a flow product ranks by activity, the screener in a rules product ranks by fit against criteria.
A trader whose process starts from "what is unusual today" and who reads flow as a signal source will find Unusual Whales closer to that workflow. A trader whose process starts from a written set of rules, who wants every candidate judged the same way and wants the record of why, will find Optionscanner closer. Some traders use a flow product for discovery and a rules product for evaluation and monitoring; nothing in either prevents that.
Flow data shows what traded, not why, and large prints can be hedges, closes or spreads legged separately. A rules engine only knows the rules it is given; a setup outside them is invisible to it. Neither product is a source of investment advice, and both leave the decision to the trader.
Unusual Whales is primarily a flow-data product. Its core is options order flow: unusual activity, large sweeps and blocks, dark-pool prints, and alerts when something out of the ordinary trades, alongside news, politician-trading disclosures and a large community. The question it answers is "what is the market doing right now that I would not otherwise see?"
Options order flow and unusual-activity detection. Optionscanner has no flow feed and does not try to infer institutional intent from prints. Dark-pool and block data, and flow-based alerts. Congressional and insider trading trackers, and a social feed. A broad news and market-overview layer.
A rules engine with the thresholds on screen: delta band, days to expiry, credit-to-width floor, liquidity floors, IV rank and volatility-premium tests, each one a number you can change. Position monitoring judged by rules you adopt by name, with the rule that fired and the value that met it printed on the card. A paper-first automation agent with an approval queue, a kill switch and a decision log, and a hard rule that no live order is placed without a click.
More in Comparisons: Optionscanner and other tools: Optionscanner vs Market Chameleon: Data Depth or Workflow? · Optionscanner vs OptionStrat: Strategy Builder or Rules Engine? · Optionscanner vs Barchart: Market-Wide Screens or a Rules Engine?