7 tools · pay once · offline

Trading and quant

Position sizing, options payoffs and trading journals as offline tools and notebooks.

1M+ X impressions in 4 days, run by AI agents · 8 iOS apps live on the App Store · 519 GitHub stars · 124 tools in the shop · O'BLOCK on Steam, free Oct 20

Position Size & Kelly Calculator cover

Position Size & Kelly Calculator

Google Sheets + Excel

$5
Black-Scholes Options Calculator cover

Black-Scholes Options Calculator

price and Greeks in Google Sheets + Excel

$7
Options Volatility Trading in Python cover

Options Volatility Trading in Python

Black-Scholes, Greeks, Vol Surface, VRP Strategy + Backtest

$25
Crypto Price Arbitrage Bot cover

Crypto Price Arbitrage Bot

Full Python Source Code (5 Exchanges, Telegram Alerts)

$80
Volatility Mean Reversion Strategy cover

Volatility Mean Reversion Strategy

VIX Quant Notebook

$49
Momentum + HMM Regime Filter Equity Quant Notebook cover

Momentum + HMM Regime Filter Equity Quant Notebook

Cross-sectional equity momentum with a Hidden Markov Model regime filter. The regime filter is what makes this different

$49
Funding Rate Carry Strategy cover

Funding Rate Carry Strategy

Crypto Quant Notebook

$49

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