Comparison

ZeroSigma vs SPY 0DTE GEX

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ZeroSigma

This app provides real-time options analytics for traders, focusing on dealer positioning and market structure. It tracks key exposure metrics and strike-level positioning to help understand potential price influences. The mobile interface offers a fast and focused way to monitor market data on the go.

Highlights
  • Real-time exposure metrics
  • Strike-level positioning insights
  • SPX/SPY dealer positioning
  • Fast mobile interface
  • Secure account access
  • Options flow and volume tracking
Features
Read full description

ZerσSigma is a real-time options analytics platform built for traders who want to understand dealer positioning and market structure. Track key exposure metrics across SPX, SPY, QQQ, and NDX, with explicit 0DTE and 1DTE views designed to separate today's positioning from the next expiration. Explore gamma exposure, delta exposure, vanna, charm, higher-order Greeks, volume, GEX Flow, and Dealer Directional Open Interest at the strike level. Switch between Normal and Delta-Adjusted gamma views and examine how positioning changes across strikes and expirations. ZerσSigma Mobile provides a fast, focused interface for monitoring market structure wherever you trade. Features: • SPX, SPY, QQQ, and NDX coverage • 0DTE and 1DTE positioning • Gamma Exposure with Norm and Δ-Adj views • Delta, Vanna, Charm, Theta, Speed, Vomma, and Zomma exposure • Dealer Directional Open Interest (DDOI) • GEX Flow and options volume • Strike-level positioning analysis • Real-time market data and exposure updates • Secure account-based access Create an account in the app to get started. Premium access requires an auto-renewable subscription. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/?utm_source=chatgpt.com Privacy Policy: https://zerosigma.co/privacy?utm_source=chatgpt.com

About

SPY 0DTE GEX

Features
Read full description

SPY 0DTE GEX puts institutional-grade gamma exposure analysis on your phone, refreshed every 15 minutes during market hours. WHAT YOU GET • Live SPY 0DTE levels — pin magnet, zero gamma, call wall, put wall, and max pain, updated every 15 minutes from real options-chain data. • Per-strike GEX chart — see exactly where dealer gamma concentrates, in net, absolute, calls-only, or puts-only view. • Intraday levels chart — watch how each level moves across the session, in timeline or single-day view, on a chart that scales to your phone in landscape. • Session history — pin-hit rate, average range, and a full log of past sessions. • Advanced metrics — max pain, expected move, net delta exposure, put/call ratio, IV skew, vanna, and charm. • Custom push alerts — build your own rules: price crossing a level, a bias or gamma-zone flip, or sentiment past a threshold. Alerts fire even when the app is closed. WHO IT'S FOR Options traders who watch 0DTE gamma positioning and want the same signals the desktop tool gives, without opening a browser. SUBSCRIPTION SPY 0DTE GEX Pro unlocks the full app: live levels, the GEX chart, session history, and unlimited custom alerts. • Pro Monthly — $19.99/month, 7-day free trial • Pro Yearly — $149.99/year, 7-day free trial Payment is charged to your Apple ID at confirmation of purchase. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID account settings. IMPORTANT SPY 0DTE GEX is an informational and educational tool. It is not investment advice, and Nexcod Srl is not a registered investment advisor. Options trading carries substantial risk. Always do your own research before trading. Terms of Use: https://trendystocks.trade/spy-0dte-gex-terms.html Privacy Policy: https://trendystocks.trade/spy-0dte-gex-privacy.html

Screenshots

ZeroSigma4 screens
SPY 0DTE GEX4 screens

Verdict

The call

ZeroSigma and SPY 0DTE GEX are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ZeroSigma sells 2 in-app purchases, starting at $79.00 per month and SPY 0DTE GEX sells 2 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
ZeroSigma versus SPY 0DTE GEX: the parameters behind the verdict, then further details
ParameterZeroSigmaSPY 0DTE GEX
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyMonthly—
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better16.4
Further details — not scored
Size31 MB50 MB
Age rating4+4+
DeveloperZeroSigmaNexcod Srl

In-app purchases

2 purchases

ZeroSigma

Subscriptions2
  • ZeroSigma Premium$79.001 Month
  • ZeroSigma Premium$699.001 Year
2 purchases

SPY 0DTE GEX

Subscriptions2
  • Pro Monthly7 Days trial$19.991 Month
  • Pro Yearly7 Days trial$149.991 Year

Questions

Is ZeroSigma free?
ZeroSigma is free to download, with in-app purchases available.
Is SPY 0DTE GEX free?
SPY 0DTE GEX is free to download, with in-app purchases available.
Do ZeroSigma or SPY 0DTE GEX have ads?
Neither ZeroSigma nor SPY 0DTE GEX shows ads.

Other comparisons