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HARMONIA OS + FATBOOK™

See the Auction. Read the Flow. Trade the Framework.

Harmonia OS is an AI-driven auction-market framework designed to identify where price is most likely to move next—not by predicting, but by measuring balance, imbalance, acceptance, rejection, and probabilistic reach.

Rather than relying on lagging indicators or traditional support and resistance, Harmonia maps the live auction around key zones—including 20%, 50%, 80%, EQ, and EXT—creating a structured framework for market bias, targets, rotations, and trade opportunities.

FATBOOK™ takes Harmonia deeper, adding real-time order-flow and liquidity intelligence around those levels. Liquidity, delta, CVD, absorption, exhaustion, aggressor behavior, and developing order flow help reveal whether price is being defended, rejected, accepted, or preparing to break.

Together, they create one unified trading ecosystem:

HARMONIA OS → Map the auction.
FATBOOK → Read the flow.
FAT WICK → Execute the edge.

Built for ES, NQ, YM, and RTY, from discretionary Harmonia entry models to the framework powering Fat Wick automated strategies.

Customer reviews
5.021 ratings
Top reviews
  • 4 months ago
    SFF Algos are simply some of the best out there. The algos are simple to understand, easy to follow, and help take a lot of the emotion out of trading. You still have to understand risk management and use the tools properly, but they give you a clear framework instead of leaving you guessing. Seven...
    Written 9 days after purchase
  • 4 months ago
    These algos are hands down the best I have seen. Even in this crazy market they are producing results. The developer is always improving and tweaking so they just keep getting better.
    Written 2 months after purchase
  • 4 months ago
    Best algos on the market and they are constantly improving. Unlike other algo companies Seven is constantly making updates to adapt to current market conditions. You will not find better value for the price anywhere else.
    Written 1 month after purchase
  • 4 months ago
    Seven is an incredibly active algo maker and trader. He’s constantly improving his algorithms, which are already very profitable. In an industry filled with scammers Seven is one of the few legit ones. I made back my membership within 24 hours of joining and running the algos, and months later I’m s...
    Written 3 months after purchase