
GammaWalls
GEX Horizon
Barchart
GammaFlip
ChartGEX
FinViz
PremiumGuardHQ
Real-time options analytics API - Greeks, gamma exposure, SVI vol surfaces for 6,000+ underlyings. Free tier available.

Ghost
Medium
beehiiv
MailChimp
Buttondown
WordPress
Notocat
With Substack, anyone can start a publication that combines a personal website, blog, and email newsletter or podcast. It's quick and simple.
Which is more popular?
Based on our record, Substack seems to be a lot more popular than FlashAlpha. While we know about 113 links to Substack, we've tracked only 2 mentions of FlashAlpha.
Website, pricing, platforms and company facts side by side.
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| Website | flashalpha.com | substack.com |
| Pricing | — | |
| Company | Startup from Cyprus · 2026 | Startup from the United States |
| Listed in |
In their own words, as submitted to SaaSHub.


FlashAlpha is a real-time options analytics API for quant traders and developers. It computes gamma exposure (GEX), delta/vanna/charm exposure, SVI-calibrated volatility surfaces, and full Black-Scholes Greeks for 6,000+ US equities and ETFs. Delivered via REST API with a Python SDK. Free tier...
No description of Substack yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
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Monetizing Podcasts and Newsletters - Chris Best of Substack and Jonathan Gill of Backtracks
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using FlashAlpha and Substack. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


We have no reviews of FlashAlpha yet. Be the first one to post
Substack offers writers of all experience levels the ability to write an email newsletter that’s profitable through subscriptions. Substack provides purpose-built web and newsletter publishing tools to enable writers...
What sеts Substack apart is its sеamlеss intеgration of contеnt crеation and subscription-basеd monеtization. Substack’s usеr-friеndly intеrfacе, distribution tools, and support for various contеnt formats make it a...
Substack and Medium differ primarily in their monetization methods. Medium pays creators based on reader engagement, while Substack enables writers to monetize directly through paid subscriptions to their newsletters....
Recommendations tracked on public social media and blogs since March 2021.


I built FlashAlpha for this. GET https://lab.flashalpha.com/v1/vrp/{symbol} returns ATM IV, four matched RV windows (5d, 10d, 20d, 30d) using Yang-Zhang, the VRP for each, rolling z-score and percentile, put-call directional... - Source: dev.to / 6 months ago
FlashAlpha's Historical API changes that. The contract is simple: every live analytics endpoint, replayable at any minute since 2018-04-16, returned in the same response shape. One query parameter — at — and you get what GEX, DEX, VEX,... - Source: dev.to / 7 months ago
a profile link: https://substack.com/@noahpinion. - Source: dev.to / 2 days ago
A free comedy newsletter that has nothing to do with technology yet mentions it from time to time. https://substack.com/@yelluwcomedy. - Source: Hacker News / 5 days ago
Books have already been written on this, some as early as 1945 (That Hideous Strength, C.S. Lewis). Otherwise I can recommend basically everything by Curtis Yarvin and Kevin Dolan (https://substack.com/@exitgroup,... - Source: Hacker News / 24 days ago
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Ghost is a fully open source, adaptable platform for building and running a modern online publication. We power blogs, magazines and journalists from Zappos to Sky News.
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Free real-time Gamma Exposure (GEX) dashboard tracking SPX, SPY & QQQ Call/Put Walls, Zero Gamma Flips, and Dealer Hedging Levels.
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Welcome to Medium, a place to read, write, and interact with the stories that matter most to you.
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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 savi…
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beehiiv empowers people to create, monetize, and grow by providing the most powerful and robust newsletter platform, holistically under one roof.
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