Order flow in your pocket. Free.

What you get

• The full Volume footprint at phone width: Bid × Ask, Delta, Volume and Dominance views on any Binance USD-M perpetual
• Delta, bar POC and value area, stacked imbalances and delta divergence, with row grouping you can widen until a bar reads at a glance
• A live liquidity heatmap, depth of market and Time & Sales on the same contract, in the order flow view
• A layout made for a phone held either way: sheets and toolbars never shrink the chart, and turning the phone sideways keeps the bottom bar
• Drawing tools made for a finger: tap a line to select it, then move or restyle it
• A relay that keeps the order book and the tape moving when your network cannot reach Binance’s live streams
• Add Basis to your home screen and it opens full screen, without the browser bar, like an app

Why this is usually paid for

Order flow has mostly been built for a desk: installed software, several monitors, a mouse. On a phone the usual choice has been a candle chart with a volume bar under it. The data was never the obstacle. On crypto every trade is public and carries the side that crossed the spread; what was missing was an interface that fits in one hand.

Basis builds the footprint in the browser from Binance’s trade stream, so a phone does the same work a laptop does, and there is no per-user server cost to charge for. The phone layout was rebuilt for touch: tap targets of at least forty pixels, bars that never squeeze the chart, and a landscape mode that keeps navigation in reach.

How to use it

1. 1

   Open the footprint on your phone

   The button below opens Binance BTCUSDT on a five-minute Volume footprint. Zoom in until a handful of bars fill the screen; the cells grow until bid and ask volume can be read without squinting.

2. 2

   Turn the phone sideways for more bars

   Landscape shows more candles at the same cell size, and the bottom bar stays in place, so the order flow view, the screener and the menu remain one tap away while you read.

3. 3

   Widen the row grouping

   If a bar looks like a wall of single ticks, raise the row grouping in the footprint controls until a normal bar shows a handful of rows. The right size depends on the coin and the interval, not on the screen.

4. 4

   Keep Basis in front while you watch

   Phones pause background tabs to save battery, so the live tape and any browser alerts stop when you switch apps or lock the screen. Watch with Basis open, and expect it to reconnect when you come back rather than to run in the background.

Questions

Learn what you are looking at

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