What free screeners do well — and where they stop
Free unusual-activity tables answer 'what traded a lot today.' They rarely answer 'which of these is worth my review time.' ConvexRadar's ranking and catalyst context exist for that second question.
Free screeners like Barchart's are a common starting point. ConvexRadar is built for the next step: a ranked, contract-level scanner that combines unusual-activity pressure with IV cost, catalysts, and saved-contract tracking in one paid but inexpensive workflow.
Free unusual-activity tables answer 'what traded a lot today.' They rarely answer 'which of these is worth my review time.' ConvexRadar's ranking and catalyst context exist for that second question.
Screener users typically bounce between a volume table, an IV page, an earnings calendar, and a watchlist. ConvexRadar folds those into one row per contract, then lets you save and track what you found.
ConvexRadar is not affiliated with Barchart. And like every page on this site: options flow is one research input, ConvexRadar's print typing is a chain-derived proxy rather than licensed full-tape data, and nothing here is financial advice.
No. ConvexRadar is independent, and this page is a comparison for traders considering a paid step up from free screeners.
Free tables show raw volume. ConvexRadar ranks exact contracts, adds IV cost and catalyst context, and tracks saved contracts — the parts of the workflow that take the most manual time.
Founder Beta is $29/month and Pro is $49/month, each with a 5-day free trial, so the workflow can be tested before paying.
Trading options involves risk. ConvexRadar is research software and does not provide financial advice or guarantee trade outcomes.