Bitcoin
BTCUSDT · Perpetual
Net taker delta · last 60 minutes
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Reading the last hour of taker flow from the exchange.
Price——24h
Buyers crossed —24h aggressor split— Sellers crossed
−60m−30mnow
- Open interest
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- OI 24h
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- 24h volume
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A free footprint chart with the real order flow inside every candle
Every trade at every price, live in your browser. Free to start, nothing to install.
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- Binance
- Bybit
- OKX
- Bitget
- Gate.io
- Hyperliquid
- Coinbase
Order flow · live
Crypto order flow, live, right now
Most market overviews show you price. Price is the outcome. These are the inputs: which side had to cross the spread, how much leverage is still on the table, and what got forced out. Every figure here is read by your own browser directly from the exchange.
DisconnectedBinance perpetuals
- BTCBTC: hourly taker delta and aggressor split——
- ETHETH: hourly taker delta and aggressor split——
- SOLSOL: hourly taker delta and aggressor split——
- XRPXRP: hourly taker delta and aggressor split——
- DOGEDOGE: hourly taker delta and aggressor split——
- BNBBNB: hourly taker delta and aggressor split——
- ADAADA: hourly taker delta and aggressor split——
- LINKLINK: hourly taker delta and aggressor split——
Prints over $100K. Liquidations join live. No exchange publishes their history.
Bitcoin
The Bitcoin perpetual is the deepest order flow market in crypto and the one most footprint work is calibrated against. Its 24-hour delta is the taker side of every print (the volume that paid the spread), so a positive delta against a falling price is the clearest absorption signal the market gives you.
BTC order flow chartEthereum
Ethereum's perpetual carries a different crowd. More of its volume arrives in bursts around deleveraging, which is why the open interest and liquidation split here often move before the price does rather than after it.
ETH order flow chartSolana
Solana's perpetual is thinner and faster than the other two, so the largest single trade of the hour matters more. One order can take out several ticks at once, and the footprint shows you exactly which levels it cleared.
SOL order flow chartFree order flow software
Explore the chart tools below. Free includes footprint, CVD, delta and imbalance; Pro adds the book heatmap, big trades, the DOM ladder, the flow tape, speed of tape, VWAP and multi-chart grids. Each preview is a recording of the real chart.
Footprint charts
Bid by ask at every price, in four cell modes: raw bid×ask, delta, total volume, or a delta profile that draws the bar's own shape. Imbalance ratio and stack length are yours to set. Tick grouping follows the zoom automatically, so cells never collapse into unreadable slivers.
How to read a footprint chartDOM: depth of market
A live ladder of resting bids and offers with volume traded at each price beside it, big orders highlighted against the book's own median size, and placed and pulled orders flashing as they happen. Watching a wall get pulled is the fastest lesson available in what the book is actually worth. The ladder is part of Pro.
How to read a DOM ladderLiquidity heatmap
The order book recorded from the moment you open it, every price coloured by how much rested there, with the trades drawn over it as bubbles. Walls, orders pulled as price arrives and thin zones show at a glance, and a wall tracker marks which walls were eaten and which were pulled. The heatmap is part of Pro.
How to read a liquidity heatmapDelta panel
Each bar's delta, the highest and lowest it reached inside the bar, the running cumulative delta and volume, printed as numbers in rows beneath the chart, one column per bar. Every row can be switched off, and every figure comes from the same trades as the footprint above it, so the two can never disagree.
How to read volume deltaCumulative volume delta (CVD)
Delta added up bar after bar and drawn as candles, whose wicks show how far it ran inside each bar, or as a line, with each bar’s delta as a histogram. Bars where price made a new high or low and CVD did not follow are marked.
How to read CVDBig trades and the tape
Prints above your size threshold drawn as bubbles on the chart, clustered so that one order sweeping several prices reads as one order rather than a burst of small ones. Big trades and the flow tape beside them, where every print and liquidation lands as it happens, are part of Pro.
How to read big tradesFlow tape
Aggressive prints and liquidations in one list, filtered by what they were worth instead of by coin size. A $100K floor means the same thing on every symbol and at every price, where a size filter quietly gets noisier as price falls. The flow tape is part of Pro.
How to read the flow tapeSpeed of tape
Prints per second for every bar, against its own moving average. It counts decisions, not size: one 500 BTC print is heavy volume on a quiet tape, while a thousand small prints is light volume on a tape telling you something is starting. Speed of tape is part of Pro.
Open Speed of tapeVWAP and bands
Volume-weighted average price built from every traded level in each bar, not a high-low-close shortcut, with up to three standard-deviation bands. Anchor it to the UTC day, the New York open, a time you choose, the week or the month. VWAP is part of Pro.
Open VWAP and bandsBar replay and backtesting
Pick a date, or let the chart pick one, and step through it a bar at a time with everything after the playhead hidden. Trade it with realistic fills, fees and slippage, switch to the footprint wherever the order flow was archived or recorded, and keep every trade in your journal. Backtesting is part of Pro.
How to backtest with bar replay
- Bid column · sells hitting resting buyers
- Bar delta · aggressive buying minus aggressive selling
- Diagonal comparison · ask here vs bid one tick down
- Three stacked buy imbalances
- POC · heaviest level in the bar
What is a footprint chart?
A candle tells you where price opened, how far it travelled and where it closed. A footprint chart tells you what happened inside it: how much traded at every single price, and which side was the one crossing the spread to get filled. Everything below is marked on the example bar beside it.
Read the complete footprint chart guideThe two columns
Every price level in a footprint bar prints two numbers. The left is volume that traded at the bid: somebody sold into a resting buy order. The right is volume that traded at the ask: somebody bought from a resting sell order. Both sides of every trade are always present; what the split tells you is who was impatient. Resting orders wait. Market orders pay the spread. Separating the two is the whole idea.
Delta: who was the aggressor
Delta is ask volume minus bid volume: buying that crossed the spread minus selling that crossed it. Per level it says which side was working that price. Per bar it says what the auction cost the aggressors. The useful part is not the number, it is the disagreement between the number and the price. A bar that closes green on negative delta was pushed up by sellers being absorbed, not by buyers arriving, and it is a completely different bar from one that closed green on plus nine hundred.
What is bid-ask imbalance
An imbalance compares the two sides of the same spread, which is why it is read diagonally and not straight across. To buy at the ask at a price, your counterparty is a limit seller resting there. To sell at the bid one tick below, your counterparty is a limit buyer resting there. Those two orders are the quote. So Klustra compares ask volume at each price against bid volume at the price one tick beneath it, and marks the level when one side is three or more times the other. Comparing a level against itself compares trades that were never competing for the same resting order.
Stacked imbalances
One imbalance is noise. Three or more consecutive levels imbalanced the same way is a stack, and a stack is a stretch of price where one side kept having to pay up and the other kept refusing to. Those are the ranges worth drawing a line on, because when price comes back the side that lost that fight often has unfinished business there.
How to read stacked imbalancesThe point of control
The point of control is the price that traded the most volume, whether in one bar, in a session, or in a range you draw yourself. It is where the auction agreed. Price leaving a POC quickly and not returning is acceptance somewhere else. Price grinding back to it again and again is a market that has decided nothing yet, and trading against that is how ranges take your money.
Absorption, exhaustion and the unfinished auction
Absorption is heavy one-sided delta with no price to show for it. Six hundred contracts lift the offer and the bar closes on the tick it opened: the passive side ate all of it. That reads stronger than any indicator, because you watched the aggressive side lose in real time.
Exhaustion is the opposite shape, at the extreme. Take the top level of the bar and compare it with the level beneath: if the volume collapses to a fraction of what was trading one tick lower, the buyers ran out before the sellers did.
An unfinished auction is the detail most explanations skip. At a genuine high the top level should be one-sided: buyers lifted the offer, nobody sold up there, and the auction turned. If the extreme level prints volume on both sides, the turn was interrupted rather than completed, and price usually comes back to finish it. Those levels are the highest-quality magnets on the chart.
How to read order flow on a Bitcoin footprint chart
Put it together on a live BTC bar and the sequence reads like a sentence. A stacked buy imbalance forms on the way up. The next bar prints a large positive delta but a smaller range than the one before it. The level at the high shows volume on both sides. That is aggressive buying being absorbed at an unfinished high: a poor place to buy, and a defensible place to be short with the stop above the stack. None of it is visible on a candle, and all of it is in the free chart.
Each of these has its own page, with settings, worked examples and the cases where it misleads you: Footprint charts, DOM: depth of market.
Compare
A free alternative to the paid order flow platforms
Free gives you the footprint, CVD and delta. Pro adds the order book, the tape and the archive, for less than any other paid plan in this table.
Exocharts, Bookmap and ATAS are established platforms, and each does things Klustra does not: market replay, trading from the chart, futures and stock data. Those rows are here too. Their cells come from each vendor’s own site, and each name links to its price list.
| KlustraFree | Lowest paid priceKlustraPro | Exocharts | Bookmap | ATAS | |
|---|---|---|---|---|---|
| Price per month | 0 USDTa monthOpen the chart | 9 USDTa month, or 66 USDT a yearGet Pro | €28 – €49a month | $0 – $99a month | €0 – €89.95a month |
| Getting started | |||||
| Runs in a browser | Yes | Yes | YesWeb plan, no DOM | YesBookmap Web | NoWindows and macOS |
| Live chart without signing up | Yes | Email sign-in | YesDesktop trial | YesBookmap Web | No |
| Pay in crypto | Nothing to pay | YesUSDT or USDC | No | Not listed | Not listed |
| Order flow | |||||
| Footprint chart | Yes | Yes | Yes | YesGlobal Plus | Yes |
| Delta | Yes | Yes | Yes | Yes | Yes |
| Cumulative volume delta (CVD) | Yes | Yes | Yes | Yes | Yes |
| Bid-ask imbalance | Yes | Yes | Yes | Not listed | Yes |
| Volume profile | YesFixed range | YesFixed range | Yes | Yes | Yes |
| VWAP | No | Yes | Yes | YesPaid plans | Yes |
| Open interest | No | Yes | Yes | Not listed | Yes |
| Liquidations | No | Yes | Yes | YesGlobal and up | Yes |
| Order book and tape | |||||
| DOM ladder | No | Yes | YesDesktop app | Yes | Yes |
| Liquidity heatmap | No | Yes | Not listed | Yes | YesBeta |
| Big trades | No | Yes | YesDesktop app | Yes | YesPaid plans |
| Time and sales tape | No | Yes | YesDesktop app | Yes | Yes |
| Speed of tape | No | Yes | Not listed | YesThird-party add-on | Yes |
| Alerts and layout | |||||
| Alerts | No | Yes | Not listed | Yes | Yes |
| Several charts on screen | NoOne | YesUp to four | Yes | YesPaid plans | Yes |
| Beyond crypto charting | |||||
| Market replay | No | No | Yes | YesPaid plans | YesPaid plans |
| Trade from the chart | No | No | No | Yes | Yes |
| CME futures and stock data | No | No | Yes | Yes | Yes |
Klustra’s columns come from the same list as its price table. The others were read from each vendor’s own pricing page and documentation on September 25, 2026: prices are monthly billing, before VAT and market-data fees, and a plan named in a cell is the one that includes it. A dash means the vendor's pages do not list it. Plans change, so follow the link before you decide.
What it costs
Start free. Go Pro when you need more.
Prepaid in USDT. No automatic renewal and nothing to cancel. All purchases are final.
Free
No account needed0 USDT
Your starting point for order flow. Open the chart, explore the tools, and build your own way of seeing the market.
- Live footprint and candles from seven exchanges
- Footprint, CVD, delta and imbalance
- The last six hours of order flow
- Years of candles, on every timeframe
- Every drawing tool, with moving averages, RSI and ATR
- Workspaces, drawings and watchlists saved in your browser
- An optional free account, to carry your setup to another device
- One chart at a time. No account, no card, nothing to install
Runs in your browser · Nothing to install
Pro
One paid plan5.50 USDTa month, billed yearly (66 USDT). Or 9 USDT monthly.
Everything in Free, plus the depth: days of order flow, more tools, more charts, and alerts by email and Telegram that work with the tab closed.
- Everything in Free
- The deep order-flow archive: days of footprint, not hours
- The DOM ladder in full depth, with big orders and flashes
- The book heatmap, big trades, the flow tape and speed of tape
- VWAP, open interest, liquidations and order-flow signals
- Price and order-flow alerts, by email and Telegram when the tab is closed
- Two- and four-chart grids
- Up to 100 email and Telegram alerts, 100 messages a day per channel
- Bar replay backtesting and a trading journal, synced across your devices
- No affiliate cards: the sidebar folds away
- Prepaid, never renewed automatically. Nothing to cancel
Pay in USDT or USDC · All sales final
Compare Free and Pro, feature by feature
| Feature | Free | Pro |
|---|---|---|
| Charts | ||
| Live markets on Binance, Bybit, OKX, Bitget, Gate.io, Hyperliquid and Coinbase | Included | Included |
| Candles, with years of history on every timeframe | Included | Included |
| Footprint chart (bid × ask) | Included | Included |
| Book heatmap | Not included | Included |
| Charts on screen at once | One | Up to four |
| Order flow | ||
| Delta | Included | Included |
| CVD | Included | Included |
| Bid-ask imbalance and stacked imbalances | Included | Included |
| Volume | Included | Included |
| Absorption and exhaustion signals | Not included | Included |
| Order-flow history | Last 6 hours | Deep archive, where covered |
| Order book and tape | ||
| DOM ladder | Not included | Included |
| Big trades | Not included | Included |
| Flow tape | Not included | Included |
| Speed of tape | Not included | Included |
| Indicators and drawing | ||
| VWAP and bands | Not included | Included |
| Open interest (futures) | Not included | Included |
| Liquidations (futures) | Not included | Included |
| Moving averages, RSI and ATR | Included | Included |
| Drawing tools | Included | Included |
| Alerts: browser, email and Telegram | ||
| Price and order-flow alerts in the browser | Not included | Included |
| Email and Telegram price alerts with the tab closed (Binance spot, Bybit, Coinbase) | Not included | 100 alerts, 100 messages a day per channel |
| Backtest and journal | ||
| Bar replay backtesting, with orders and fills | Not included | Included |
| Trading journal, synced across your devices | Not included | Included |
| Workspace | ||
| Workspaces, drawings and watchlists saved in your browser | Included | Included |
| Optional account copy, to carry your setup to another device | Included | Included |
| Partner affiliate cards in the sidebar | Shown | None |
Underlined names open a short recording of that tool on a real chart.
Missing a tool or a feature you trade with? Email features@klustra.app and tell us.
Questions traders actually ask
What is a footprint chart?
A footprint chart replaces each candle with the volume that traded at every price inside it, split by which side crossed the spread. Sells that hit the bid print on the left of each level, buys that lifted the ask on the right. It answers the question a candle cannot: not where price went, but who had to pay to move it.
Read the footprint chart guideHow do I read order flow as a beginner?
Start with one thing: the disagreement between delta and price. Find bars with heavy one-sided delta and almost no range, and watch what happens next. That is absorption, and it is the pattern that teaches the rest. Add imbalance stacks once you trust that, and leave the DOM until last, because it moves too fast to learn on.
What is bid-ask imbalance?
It is a comparison between the ask volume at one price and the bid volume one tick below, which are the two sides of the same quote. When one is three or more times the other the level is marked. Three consecutive marked levels is a stacked imbalance, which is the version worth acting on. A single one is usually noise.
Is Klustra really free?
Yes. The chart is free without signing in: live footprint, CVD, delta and imbalance and the last six hours of order flow. Pro adds the book heatmap, big trades, the DOM ladder, the flow tape and speed of tape, two- and four-chart grids, the deep order-flow archive, and alerts in the browser, by email and on Telegram, for 9 USDT a month or 66 USDT a year. Pro is prepaid, with no automatic renewal and nothing to cancel.
Do I need an account?
No account is required for the free chart. An optional email-link account lets you manually save and restore a copy of workspaces, drawings and browser alerts. Local settings remain on your device unless you request a save. Clearing browser storage can erase local data, so export important workspaces.
Do I need to download anything?
No. Klustra is a web page. It runs in Chrome, Firefox, Safari and Edge on desktop, and works on tablets. There is no installer, no extension and no desktop build, so nothing to keep updated and nothing that can be blocked by a corporate machine policy.
Which exchanges are supported?
Live chart adapters support Binance, Bybit, OKX, Bitget, Gate.io, Hyperliquid and Coinbase, with market availability depending on the venue. Coinbase is spot-only here. Email and Telegram alerts cover Binance spot, Bybit and Coinbase markets; Binance futures alerts notify in the open chart only. Archive coverage varies by instrument and date.
What is the difference between a footprint chart and a volume profile?
A footprint shows volume at price within each individual bar, so it is about sequence: what happened, in what order, at what price. A volume profile aggregates volume at price across a whole session or range, so it is about structure: where the market has agreed and where it has not. Most traders use both, on the same chart.
How much history do I get?
Candle history reaches years back on both plans. Real per-price footprint comes from the exchange's own trade history and your live stream: Free shows the last six hours of order flow. Pro adds the deep archive of whole UTC days, with a 4 GiB daily download allowance. The chart marks where real footprint begins and never invents missing trades.
Can I get alerts by email or Telegram?
Alerts are part of Pro. Browser alerts evaluate price and order-flow conditions while the tab is running. Price alerts can also reach you by email or Telegram with the tab closed: our servers check the price about once a minute, so a quick move through the level between checks can be missed. Telegram alerts arrive through your own Telegram bot, which you connect in the Alerts panel. Email and Telegram cover Binance spot, Bybit and Coinbase. Limits are 100 saved alerts and 100 messages a day per channel, with a five-minute repeating-alert cooldown.
Does it work on mobile?
The chart reads well on a phone and is fully usable on a tablet, but order flow is a dense display and a small screen shows a lot less of it. The heavier 3D and multi-chart layouts scale themselves down on small or low-power devices so the page stays fast.