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Friday, December 26, 2025

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Tool Comparison

GammaWins Calculator vs MesoSim comparison

Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.

Quick takeaways

GammaWins Calculator adds Options P&L coverage that MesoSim skips.

MesoSim includes Backtesting, Paper Trading, APIs & SDKs, AI, and AI Chat categories that GammaWins Calculator omits.

In depth comparison

GammaWins Calculator logo

GammaWins Calculator

gammawins.com

Web-based options profit calculator focused on payoff + Greeks visualization. Core tools are usable without an account; some account-only features will prompt sign-in. Market data shown in the calculator is currently 15-minute delayed; GammaWins states paid tiers are planned for live data + direct index feeds.

Platforms

Web

Pricing

Free

Quick highlights

  • Payoff/strategy value visualization over time and underlying price, with optional Greeks overlays.
  • Built-in templates for common options strategies (single-leg, spreads, volatility, and complex multi-leg strategies) and supports building custom multi-leg strategies.
  • Supports US equity and equity-index options plus Danish/Swedish/Norwegian equity and index options listed on Nasdaq Nordic.
  • Options quotes are sourced via OPRA (calculator currently displays 15-minute delayed data for options and stock prices).
  • Modeling: uses Black-Scholes for European options (mainly index options) and stock calls, and Bjerksund-Stensland for American puts.

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MesoSim logo

MesoSim

mesosim.io

Options strategy backtesting SaaS with low-code strategy definitions, observability (events log), risk graphs/Greeks, margin reporting, an options valuation model/solver, and an implied-volatility surface viewer. Plan gating: Free includes 25 runs; Standard ($1000/yr) unlocks unlimited SPX + BTCUSD/ETHUSD options backtests plus sharing/exports and 1 MesoLive paper-trading account; Advanced ($1250/yr) adds RUT/VIX/GLD, margin models, vol surface/HD risk graphs, and hourly risk traces (plus up to 2 paper accounts). Live trade execution is a paid MesoLive add-on; API access is FundPro-only.

Platforms

WebAPI

Pricing

FreeSubscription

Quick highlights

  • Advanced options strategy backtesting service built around a low-code workflow.
  • Strategy Definition schema supports multi-leg structures plus entry/exit/adjustments and simulator controls (fill model, commissions/slippage, margin, position monitoring).
  • TradFi instruments documented for simulation: SPX (data from 2010), RUT/VIX (data from 2012), and GLD (data from 2012), with index vs equity option modeling notes.
  • Published data availability + vendors and resolution (5-minute): SPX/RUT/VIX/GLD sourced from Cboe Global Markets; BTCUSD/ETHUSD (and historical SOLUSD) sourced from Deribit.
  • Position Monitor provides 2D/3D risk graphs, PnL, and Greeks, with trace collection intervals (Off/Daily/Hourly).

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Where they differ

GammaWins Calculator

Distinct strengths include:

Options P&L
  • Payoff/strategy value visualization over time and underlying price, with optional Greeks overlays.
  • Built-in templates for common options strategies (single-leg, spreads, volatility, and complex multi-leg strategies) and supports building custom multi-leg strategies.
  • Supports US equity and equity-index options plus Danish/Swedish/Norwegian equity and index options listed on Nasdaq Nordic.
  • Options quotes are sourced via OPRA (calculator currently displays 15-minute delayed data for options and stock prices).

MesoSim

Distinct strengths include:

BacktestingPaper TradingAPIs & SDKsAIAI Chat
  • Advanced options strategy backtesting service built around a low-code workflow.
  • Strategy Definition schema supports multi-leg structures plus entry/exit/adjustments and simulator controls (fill model, commissions/slippage, margin, position monitoring).
  • TradFi instruments documented for simulation: SPX (data from 2010), RUT/VIX (data from 2012), and GLD (data from 2012), with index vs equity option modeling notes.
  • Published data availability + vendors and resolution (5-minute): SPX/RUT/VIX/GLD sourced from Cboe Global Markets; BTCUSD/ETHUSD (and historical SOLUSD) sourced from Deribit.

Feature-by-feature breakdown

AttributeGammaWins CalculatorMesoSim
Categories

Which research workflows each platform targets

Shared: Options & Derivatives, Data Visualizations

Unique: Options P&L

Shared: Options & Derivatives, Data Visualizations

Unique: Backtesting, Paper Trading, APIs & SDKs, AI, AI Chat

Asset types

Supported asset classes and universes

Options, Stocks

Options, Cryptos

Experience levels

Who each product is built for

Intermediate, Advanced

Intermediate, Advanced

Platforms

Where you can access the product

Web

Web, API

Pricing

High-level pricing models

Free

Free, Subscription

Key features

Core capabilities called out by each vendor

Unique

  • Payoff/strategy value visualization over time and underlying price, with optional Greeks overlays.
  • Built-in templates for common options strategies (single-leg, spreads, volatility, and complex multi-leg strategies) and supports building custom multi-leg strategies.
  • Supports US equity and equity-index options plus Danish/Swedish/Norwegian equity and index options listed on Nasdaq Nordic.
  • Options quotes are sourced via OPRA (calculator currently displays 15-minute delayed data for options and stock prices).
  • Modeling: uses Black-Scholes for European options (mainly index options) and stock calls, and Bjerksund-Stensland for American puts.
  • Dividend handling currently assumes a constant dividend rate based on recent payout history; a more advanced dividend model using exact ex-dividend dates / finite-difference is described as part of an upcoming paid plan.

Unique

  • Advanced options strategy backtesting service built around a low-code workflow.
  • Strategy Definition schema supports multi-leg structures plus entry/exit/adjustments and simulator controls (fill model, commissions/slippage, margin, position monitoring).
  • TradFi instruments documented for simulation: SPX (data from 2010), RUT/VIX (data from 2012), and GLD (data from 2012), with index vs equity option modeling notes.
  • Published data availability + vendors and resolution (5-minute): SPX/RUT/VIX/GLD sourced from Cboe Global Markets; BTCUSD/ETHUSD (and historical SOLUSD) sourced from Deribit.
  • Position Monitor provides 2D/3D risk graphs, PnL, and Greeks, with trace collection intervals (Off/Daily/Hourly).
  • Volatility Surface viewer to explore implied-vol surfaces with overlays (e.g., open interest, volume, bid-ask spread, Greeks) and playback at 5-minute resolution (non-crypto in current version).
Tested

Verified by hands-on testing inside Find My Moat

Not yet

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Editor pick

Featured inside curated shortlists

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Frequently Asked Questions

Which workflows do GammaWins Calculator and MesoSim both support?

Both platforms cover Options & Derivatives, and Data Visualizations workflows, so you can research those use cases in either tool before digging into the feature differences below.

Do GammaWins Calculator and MesoSim require subscriptions?

Both GammaWins Calculator and MesoSim keep freemium access with optional paid upgrades, so you can trial each platform before committing.

How can you access GammaWins Calculator and MesoSim?

Both GammaWins Calculator and MesoSim prioritize web or desktop access. Investors wanting a mobile-first workflow may need to rely on responsive web views.

What unique strengths set the two platforms apart?

GammaWins Calculator differentiates itself with Payoff/strategy value visualization over time and underlying price, with optional Greeks overlays., Built-in templates for common options strategies (single-leg, spreads, volatility, and complex multi-leg strategies) and supports building custom multi-leg strategies., and Supports US equity and equity-index options plus Danish/Swedish/Norwegian equity and index options listed on Nasdaq Nordic., whereas MesoSim stands out for Advanced options strategy backtesting service built around a low-code workflow., Strategy Definition schema supports multi-leg structures plus entry/exit/adjustments and simulator controls (fill model, commissions/slippage, margin, position monitoring)., and TradFi instruments documented for simulation: SPX (data from 2010), RUT/VIX (data from 2012), and GLD (data from 2012), with index vs equity option modeling notes..

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Curation & Accuracy

This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).

Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.