Evgeniy Volkov
I've been building software for sports betting, casino, and poker operators for over a decade. ToolsGambling is where I publish open, mathematically-verified calculators and guides — the stuff I wish had existed when I was learning the industry myself.
Areas of expertise
Betting Mathematics
Expected value, Kelly criterion, closing line value, variance and bankroll simulation — what the numbers actually mean on a real slip.
RNG & Provably Fair
SHA-256 seed verification for crypto casinos, RNG certification standards, and how to independently audit game fairness.
Bankroll Management
Practical staking plans, risk-of-ruin math, and what separates entertainment gambling from a grinding professional workflow.
Software Engineering
Nuxt 3 / Vue / TypeScript / Supabase / Chart.js — every calculator on this site is built, tested, and open to inspection.
How I build these tools
Every calculator starts with a peer-reviewed formula or a publicly-documented house rule. If a result isn't verifiable from first principles, it doesn't ship.
Data sources — RTP tables, house edge figures, regulatory rulings — are cited inline in each guide, with a link to the original source wherever possible (Nevada Gaming Commission, eCOGRA reports, IRS publications, peer-reviewed journals).
All tools run client-side in your browser. No session tracking, no "improved by AI" opacity. The inputs you enter never leave your device, and the JavaScript is readable in every browser's DevTools.
Editorial policy
- Every strategy guide is reviewed by me personally before publication — no ghostwritten affiliate filler.
- Partner listings (casino and bookmaker pages) are clearly marked as affiliate content and isolated from the tools and educational guides.
- Responsible gambling disclosures and links to GamCare / BeGambleAware appear on every page.
- Calculator formulas are documented in each article's methodology section so you can verify the math yourself.
Published work on this site
- BlogIn-depth strategy guides (160+)Long-form guides on blackjack, poker, sports betting, roulette — all with working calculators and linked sources.Open Section
- GlossaryBetting & casino terminology (70+ terms)Plain-language definitions of gambling math concepts — EV, CLV, variance, hold, juice, and more.Open Section
- Tools80+ free calculatorsKelly, arbitrage, parlay, hedge, correct-score, provably-fair verifier, RTP estimator, and more.Open Section