Order flow on a Mac. Free, in the browser.

What you get

• The full Volume footprint in a browser tab: Bid × Ask, Delta, Volume and Dominance views on Binance spot pairs and USD-M perpetuals
• Delta, bar POC and value area, stacked imbalances and delta divergence, with row grouping you can tune to each coin
• The Order Flow workspace beside it: a live liquidity heatmap, depth of market and Time & Sales on the same contract
• A layout that uses the whole screen of a MacBook or an external display, with keyboard shortcuts and a command palette
• The same experience on Apple silicon and Intel Macs, because nothing is installed and the browser does the work
• Bar-by-bar replay of past sessions, and price alerts that run while the tab is open

Why this is usually paid for

Much of the classic order-flow software was built for Windows first. On a Mac that has meant running Windows in a virtual machine, controlling another computer remotely, or doing without. The data was never the obstacle: on crypto every trade is public and carries the side that crossed the spread.

Basis builds the footprint inside the browser from Binance’s trade stream, so a Mac needs nothing but the browser it already has. There is no installer to trust, no seat licence and no server doing the work for each user, which is why it can be offered for free.

How to use it

1. 1

   Open the footprint in your browser

   The button below opens Binance BTCUSDT on a five-minute Volume footprint. Safari and Chrome both work. If you want it a click away, Safari can add any site to the Dock from its File menu, and it then opens in its own window like an app.

2. 2

   Give the chart the screen

   Go full screen or move the window to an external display, then zoom until a handful of bars fill the view. On a large screen the cells are big enough to read bid and ask volume at every price without squinting.

3. 3

   Read the trades against the book

   Press Order Flow at the top of the terminal for the liquidity heatmap, depth of market and tape on the same market. The footprint shows what traded; the heatmap shows what is waiting. Read together, they say whether a level was defended and what it cost.

4. 4

   Keep the window in view for long sessions

   Browsers slow down tabs that are hidden behind others to save energy, which can pause the live tape. For a long session, keep Basis in its own window where you can see it. When a paused tab comes back into view, it reconnects and repairs the trade history.

Questions

Learn what you are looking at

Each of these explains the calculation this platform actually performs, and where the reading misleads.

Or ask your AI, on live data

Also free