Best free options flow tools (2026)
9 of the 23 tools we track list a $0 plan. Free tiers are usually delayed or limited; the table shows what each vendor states.
| Tool | Category | Free tier details | Data delay | Cheapest paid | Source |
|---|---|---|---|---|---|
| Unusual Whales | flow, dark pool, GEX | Yes: flow 2 trading days delayed, news 15 min, alerts 30 min delayed | Real-time on paid plans | $42 | source, checked 2026-10-16 |
| Barchart | flow | Yes: limited (1 watchlist, truncated screeners); UOA full access Premier only | unknown | $8.25 | source, checked 2026-10-16 |
| Market Chameleon | flow | Starter (free); 7-day trial on Premium | unknown | $99 | source, checked 2026-10-16 |
| Stocknear | flow, dark pool | Yes: Basic $0 (10 credits/mo, 1 watchlist) | Real-time options flow on Pro | $10 | source, checked 2026-10-16 |
| LuxAlgo | flow | Yes: charts, Orderflow suite 1-day lookback, 500 credits | unknown | $24.99 | source, checked 2026-10-16 |
| GEX Metrix | GEX | Yes: delayed data with intraday OI model | Delayed (free) | $19 | source, checked 2026-10-16 |
| Gextool (GEX) | GEX | Yes, no account; 3 added tickers/day | ~15 min (CBOE delayed), snapshots every 15 min | — | source, checked 2026-10-16 |
| GammaGrid | GEX | Free while in beta; open source (AGPL-3.0) self-host | unknown | — | source, checked 2026-10-16 |
| SquawkFlow | flow, dark pool, GEX | Fully free, no account, no paid tier | 10 min delayed | — | source, checked 2026-10-16 |
Tools that only offer a trial (not a permanent free plan) are not listed here. See also free alternatives.
Built from FlowStack data checked 2026-10-16. Facts only; not investment advice and not a ranking of quality. Verify prices on each vendor's site.