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GEX Horizon VS StackrApp

Compare GEX Horizon VS StackrApp and see what are their differences

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Contents:
  1. ยป Base Details
  2. ยป Reviews
  3. ยป Alternatives

GEX Horizon logo GEX Horizon

Free real-time Gamma Exposure (GEX) dashboard tracking SPX, SPY & QQQ Call/Put Walls, Zero Gamma Flips, and Dealer Hedging Levels.

StackrApp logo StackrApp

StackrApp is a collaboration tool that helps teams build and manage their marketing technology inventory.
  • GEX Horizon GEX Horizon Dashboard
    GEX Horizon Dashboard //
    2026-07-13

Track Market Maker Positioning in Real-Time

GEX Horizon is a free, real-time Gamma Exposure (GEX) analytics platform for options traders who need to see where dealers are positioned โ€” and what they'll be forced to do next.

Unlike legacy GEX tools that refresh daily, GEX Horizon delivers sub-second WebSocket streaming of net gamma exposure across SPX, SPY, QQQ, NDX, and equities (NVDA, TSLA, AAPL, MSFT, IWM).

Why Gamma Exposure Matters

When market makers are long gamma, they trade against the trend โ€” buying dips, selling rallies โ€” suppressing volatility. When short gamma, they chase momentum โ€” buying highs, selling lows โ€” accelerating moves. Knowing which regime you're in is the most actionable market structure data available.

Key Capabilities

  • Zero Gamma Flip Indicator โ€” Detect the strike where dealer positioning shifts from volatility suppression to acceleration.
  • Live SPX GEX Dashboard โ€” Real-time call/put walls, net gamma by strike, and dealer hedging levels updated with every trade.
  • 0DTE Options Flow โ€” Isolate same-day gamma to reveal how 0DTE options drive intraday dealer behavior.
  • Dealer Hedging Velocity โ€” Quantify how fast dealers must hedge. Rising velocity = escalating impact.
  • Vanna Exposure โ€” Track how IV shifts alter dealer delta, creating feedback loops beyond what gamma predicts.
  • Volatility Shock Index โ€” Composite metric assessing the probability of a regime break.

Pricing

Tier What You Get
Free Real-time GEX, call/put walls, zero gamma flip for SPX, SPY, QQQ
Pro Tick-level data, vanna, volume-profile GEX, more underlyings
Institutional Full API, custom underlyings, bulk exports, dedicated support

See the flow. Anticipate the hedge. Trade the structure.

  • StackrApp Landing page
    Landing page //
    2022-07-21

GEX Horizon

Website
gexhorizon.com
Pricing URL
Official GEX Horizon Pricing
$ Details
freemium $99.0 / Monthly (Monthly (Pro Subscription))
Platforms
Web
Release Date
2026 July
Edit details

StackrApp

Website
stackrapp.com
Pricing URL
Official StackrApp Pricing
$ Details
-
Platforms
Laravel
Release Date
2018 January
Edit details

GEX Horizon features and specs

  • Real-Time GEX Streaming
    Live sub-second WebSocket stream of net gamma exposure for SPX, SPY, QQQ, and major US equities, updated with every options trade.
  • Call Wall Detection
    Auto-identifies the strike with largest net call gamma โ€” acting as major upside resistance from heavy dealer selling pressure.
  • 0DTE Options Flow
    Intraday analytics for zero-days-to-expiration options, isolating 0DTE gamma exposure from all-expirations to reveal same-day dealer hedging impact on price action.
  • Put Wall Detection
    Automatically identifies the strike with the largest net put gamma, acting as strong downside support due to market maker delta buying obligations.
  • Live Gamma Levels Matrix
    Consolidated real-time view of key GEX levels โ€” call wall, put wall, zero gamma flip, and major gamma concentrations โ€” across all tracked underlyings in a single dashboard.
  • Dealer Hedging Velocity Index
    Measures the speed and magnitude of market maker delta hedging activity, indicating how much buying or selling pressure dealers must execute per unit of price movement.

StackrApp features and specs

  • Visual Stack Tracking
    StackrApp provides a visual and organized way to track and manage your technology stacks, making it easy to see all the tools and technologies you or your team are using at a glance.
  • Discovery of New Tools
    The platform can help users discover new technologies and tools by browsing what others in the community are using in their stacks, facilitating learning and exploration.
  • Simple and Clean Interface
    StackrApp offers a straightforward and user-friendly interface that makes it easy to create, edit, and share your technology stacks without a steep learning curve.
  • Community Sharing
    Users can share their stacks with others, enabling collaboration and knowledge sharing among developers, teams, and the broader tech community.
  • Free to Use
    StackrApp appears to be accessible without significant cost barriers, allowing individuals and small teams to use the platform without a major financial commitment.

Possible disadvantages of StackrApp

  • Limited Popularity and Community Size
    StackrApp has a relatively small user base compared to more established platforms, which limits the breadth of community content and shared stacks available for discovery.
  • Limited Integrations
    The platform may lack deep integrations with other popular developer tools, project management systems, or IDEs, reducing its utility within existing workflows.
  • Sparse Documentation and Resources
    As a smaller platform, StackrApp may have limited documentation, tutorials, or support resources, making it harder for new users to get the most out of the tool.
  • Uncertain Long-term Viability
    Being a lesser-known product, there may be concerns about its long-term maintenance, updates, and whether the platform will continue to be supported in the future.
  • Limited Advanced Features
    The platform may lack more advanced features such as detailed analytics, team management capabilities, or robust comparison tools that power users and larger organizations might need.

Analysis of GEX Horizon

Overall verdict

  • I don't have verified, up-to-date information about GEX Horizon (gexhorizon.com) to make a reliable assessment of its quality, legitimacy, or performance. Before using this service, especially if it involves financial products, trading, or investments, you should conduct thorough independent research.

Why this product is good

  • I do not have specific data or verified reviews about this particular website or service in my knowledge base
  • Financial and trading platforms require careful due diligence including regulatory checks, which I cannot perform in real-time
  • Without current information, I cannot confirm the legitimacy, features, or track record of this platform

Recommended for

  • Anyone considering this service should first verify its regulatory status with relevant financial authorities
  • Check independent review sites like Trustpilot, BBB, or forums for user experiences
  • Look for verifiable company registration and contact information
  • Consult with a licensed financial advisor before making any investment decisions
  • Research the founders/team background and company history

Analysis of StackrApp

Overall verdict

  • I don't have verified, up-to-date information about StackrApp (stackrapp.com) to make a reliable assessment. I'm not able to confirm this product's features, reputation, or quality with confidence, and I don't want to provide potentially inaccurate information about a specific commercial service.

Why this product is good

  • I lack verified data on this specific product's actual performance and user reviews
  • Providing fabricated details about features or quality would be misleading
  • Product offerings and quality can change over time, making unverified claims risky
  • I cannot browse the internet in real-time to check the current state of this website or app

Recommended for

  • Anyone considering this app should check recent user reviews on independent platforms like Trustpilot, G2, or app stores
  • Research the company's reputation through the Better Business Bureau or similar consumer protection resources
  • Look for recent, dated articles or reviews rather than relying on AI-generated assessments for specific commercial products
  • Try a free trial or demo if available before committing, and verify claims directly with the company

Category Popularity

0-100% (relative to GEX Horizon and StackrApp)

GEX Horizon

StackrApp

Trading
100 100%
Trading
0% 0
Stack
0 0%
Stack
100% 100
Finance
100 100%
Finance
0% 0
Business & Commerce
0 0%
Business & Commerce
100% 100

Questions & Answers

As answered by people managing GEX Horizon and StackrApp.

What makes your product unique?

GEX Horizon's answer

GEX Horizon is the only free platform that delivers real-time, sub-second gamma exposure data via WebSocket streaming. Most GEX tools update once daily โ€” we update with every options trade. Key differentiators:

  • Live zero gamma flip detection โ€” know the exact strike where dealer positioning shifts regime in real-time, not at yesterday's close
  • Free institutional-grade analytics โ€” call/put walls, dealer hedging velocity, and 0DTE flow are typically locked behind expensive paywalls elsewhere
  • Multi-asset coverage โ€” SPX, SPY, QQQ, NDX plus single stocks like NVDA, TSLA, AAPL, MSFT all in one dashboard
  • No delayed snapshots โ€” WebSocket-powered streaming means you see dealer positioning as it changes, not 15 minutes ago

Why should a person choose your product over its competitors?

GEX Horizon's answer

  • Real-time, not daily โ€” WebSocket streaming delivers sub-second GEX updates, so you see dealer positioning as it shifts, not yesterday's snapshot
  • Free institutional-grade data โ€” Call/put walls, zero gamma flips, dealer hedging velocity, and 0DTE flow are all available at no cost โ€” features typically locked behind expensive paywalls
  • Zero gamma flip detection โ€” Know the exact strike where the market shifts from volatility suppression to acceleration, in real-time
  • Multi-asset in one view โ€” SPX, SPY, QQQ, NDX plus single stocks (NVDA, TSLA, AAPL, MSFT) all tracked from a single dashboard
  • 0DTE-specific analytics โ€” Isolate same-day gamma exposure to understand how 0DTE options are driving intraday dealer behavior and pinning forces
  • No API key or setup required โ€” Open the dashboard and start trading. No subscriptions, no configuration, no delayed data tiers
  • Built by traders, for traders โ€” Every feature is designed around the question: "What will dealers be forced to do next?"

How would you describe the primary audience of your product?

GEX Horizon's answer

  • 0DTE options day traders who need to know whether dealer hedging will suppress or accelerate intraday moves
  • SPX/SPY index options traders who use gamma levels as key support/resistance in their daily planning
  • Futures traders hedging ES/NQ positions who need to understand dealer delta exposure dynamics
  • Retail options traders seeking institutional-grade market structure data without paying premium subscriptions
  • Quantitative analysts monitoring real-time dealer positioning for systematic strategy signals
  • Financial advisors and PMs who want a quick daily read on whether the market is in a long-gamma or short-gamma regime

What's the story behind your product?

GEX Horizon's answer

GEX Horizon was built out of frustration with the status quo in options analytics. Institutional traders have always had access to real-time gamma exposure data โ€” it's fundamental to understanding market maker behavior and intraday volatility regimes. Yet the tools available to most traders were either:

  • Expensive ($30-100+/month for daily snapshots)
  • Delayed (refreshing once per day, missing intraday regime shifts)
  • Incomplete (showing gamma charts without zero gamma flips, call/put walls, or hedging velocity)

We believed that every trader deserves to see where the dealers are positioned โ€” in real-time, without a paywall. So we built the WebSocket infrastructure, the real-time GEX computation engine, and the intuitive dashboards that make institutional-grade options market microstructure data accessible to everyone. The result is GEX Horizon โ€” free, real-time, and built for the traders who need it most.

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare GEX Horizon and StackrApp

GEX Horizon Reviews

SpotGamma Alternative: Why GEX Horizon is Better for Intraday Traders
Enter GEX Horizon. Built from the ground up to solve the latency, cost, and integration problems of legacy platforms, GEX Horizon is quickly emerging as the premier SpotGamma alternative. Below, we break down exactly why GEX Horizon outperforms its competitors, focusing on its free real-time data, cutting-edge Incremental Static Regeneration architecture, and its commitment...
Source: gexhorizon.com
Unusual Whales vs GEX Horizon for 0DTE Options
Predicting Market Maker Behavior: If dealers are in a "Positive Gamma" regime, they will hedge by selling into rallies and buying into dips, creating a tight, low-volatility, range-bound market. If they are in a "Negative Gamma" regime, they must sell into dips and buy into rallies, exacerbating volatility. GEX Horizon quantifies this, telling you exactly how the market will...
Source: gexhorizon.com

StackrApp Reviews

We have no reviews of StackrApp yet.
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What are some alternatives?

When comparing GEX Horizon and StackrApp, you can also consider the following products

Barchart - Barchart Stocks & Futures app shows a list of stocks on the basis of ranking and performances as compared to other stocks through which you can do a comprehensive research before buying shares of a company to reduce the risk of losing your life saviโ€ฆ

CabinetM - Pinterest for marketing tools: find, compare and build stack

ChartGEX - Options analytics platform that maps dealer gamma exposure, Vanna/Charm flows, and ML-driven directional signals into a single trading dashboard.

Dashboard Options - Dashboard Options: Elite options trading analytics. Track real-time Gamma Exposure (GEX), 0DTE Greeks flow, and market maker hedging with complete privacy.

FlashAlpha - Real-time options analytics API - Greeks, gamma exposure, SVI vol surfaces for 6,000+ underlyings. Free tier available.

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