BTC/USDT—— · ETH/USDT—— · SOL/USDT—— · BNX/USDT——
// plans & pricing

Trade smarter.
Pay less.

Every tool serious traders pay $150–$300/mo for — in your browser. No desktop install, no rig required.

vs. desktop tools: Sierra Chart $50 · Jigsaw $130 · Bookmap $150+ · Kappaflow starts at $49
Live market data

Binance WebSocket · Real-time · <50ms latency

Free forever
$0 forever

Dip your toes in. No card required.

  • Order Book (top 5 bid/ask)
  • Buy/Sell Imbalance meter
  • Live trade tape
  • Basic candlestick chart
  • 1 trading pair
  • DOM Heatmap
  • Kyle's Lambda
  • Multi-pair view
Start free
Most popular
Pro $49 / mo
$49 / mo

The full orderflow stack. All pairs. All indicators.

  • Everything in Starter
  • DOM Heatmap (10-level gradient)
  • 30s Rolling Delta + Cumulative (∫)
  • Kyle's Lambda (market regime)
  • Orderbook Imbalance bar
  • Absorption metrics
  • All trading pairs
  • High-frequency trade tape
Start Pro
Scale $99 / mo
$99 / mo

For traders running multi-pair setups and automation.

  • Everything in Pro
  • Multi-pair trading view
  • Custom alert thresholds
  • Advanced regime detection
  • API access
  • Export trade data (CSV)
  • Priority support
  • Custom layouts
Start Scale
Pro+ $199 / mo
$199 / mo

Dedicated infrastructure and white-glove onboarding.

  • Everything in Scale
  • Dedicated server instance
  • Custom data feeds (NYSE, CME)
  • White-glove onboarding
  • SLA + uptime guarantee
  • Team seats (up to 5)
  • Historical data access
  • Dedicated account manager
Contact us

All plans include a 14-day free trial on paid tiers. No credit card required for Starter.

// why kappaflow

Browser-first

Open a tab. Connect. Trade. Works on any OS — Mac, Windows, Linux. No downloads, no plugins.

Real-time, <50ms

Live Binance WebSocket feed. Sub-second updates. Order book, trades, and delta — all streaming.

Institutional indicators

Kyle's Lambda, DOM heatmap, delta orderflow — the tools that used to require a $5,000 terminal are in your browser.

Transparent pricing

One price. Everything included. No surprise data feed fees, no add-on tiers, no broker lock-in.

// how we stack up
Kappaflow Sierra Chart Jigsaw Bookmap NinjaTrader
Starting price / mo $49 $24 $130 $39 $0*
Browser-based Yes No No No No
No install / plugin Yes No No No No
DOM Heatmap ✓ ✗ ✓ ✓ ✓
Delta / Orderflow ✓ ✗ ✓ ✓ ✓
Kyle's Lambda ✓ ✗ ✗ ✗ ✗
Free tier Yes No No No Yes*
Free trial on paid 14 days No No No No

* NinjaTrader free tier requires account with specific broker. Data feed costs extra.

// common questions
Do I need to install anything?
No. Kappaflow runs entirely in your browser. Open a tab, connect, trade. Works on Mac, Windows, and Linux. No downloads, no plugins, no trading software to configure.
What's included in the free Starter plan?
You get a live order book (top 5 bid/ask), a buy/sell imbalance meter, real-time trade tape, and 1 trading pair. The candlestick chart is included too. No credit card needed.
What data source does Kappaflow use?
Real-time Binance WebSocket feed for all major pairs — no reconstructed or delayed data. Up to 125Hz order book updates. Polygon.io available as optional augmentation for advanced users.
Can I switch plans at any time?
Yes. Upgrade or downgrade at any time. Upgrades take effect immediately. Downgrades apply at the start of your next billing cycle.
What's Kyle's Lambda?
Kyle's Lambda measures liquidity-adjusted market impact — it estimates how much a trade moves the price relative to its size. It helps classify market regime: low lambda = deep, liquid market (good for larger size); high lambda = thin, easily moved market (reduce position). Pro tier and above includes live Lambda estimation.
Is my trading data stored?
Kappaflow streams market data in real-time for display purposes. We don't store your trading history or personal market decisions. Sessions are ephemeral — your data isn't retained.
What's the difference between Scale and Institutional?
Scale is for individual traders running multiple pairs and wanting API access. Institutional adds a dedicated server instance, custom data feeds (NYSE, CME), SLA guarantee, team seats (up to 5), and a dedicated account manager with white-glove onboarding.

Start free. Scale when you're ready.

14-day free trial on Pro and Scale. Starter is free forever.

Get started free See how it works