Hi, I'm Stew Humphrey
A Rocky-Mountains-based sports bettor, independent solo developer and aspiring mountain man, here to share the sports betting tools I've built, training I've benefited from and lessons I've learned along the way.
It's my firm belief (through observation and experience) that with the EyeOnTheBet tools I have built and the training I have received, profitable sports betting is achievable by anyone!
I use these sports betting calculators and trackers daily, so a quality user experience is important to me as both a developer and a user. Now I present them to you: professional-grade sports betting calculators, bankroll and sportsbook trackers, and thorough sports betting guides—all completely free and privacy-focused.
On a personal note, my life dream is to develop some mountain acreage for me and my dogs to live on, and to make sure my parents are comfortable in retirement. All of my professional pursuits are an effort to make that a reality.
Why I Share These Sports Betting Tools
Sportsbooks are intentionally structured to ensure sports bettors lose money, whether quickly or over time. Every element—from odds pricing to bonus structures to confusing rollover requirements—is designed to extract maximum profit from bettors.
I realized that to bet profitably, I needed tools that:
- Calculate exact payouts to avoid bad bets
- Convert odds formats for accurate line shopping
- Identify guaranteed profit betting opportunities
- Protect my bankroll from rollover traps
- Track my bankroll across multiple sportsbooks
The tools that existed were not built to my liking, and the best ones were not free. So I built EyeOnTheBet.
What Makes These Tools Different:
Built by an Active Bettor
I'm not a software company selling tools I've never used. I bet on sports regularly and use these calculators and management tools daily. If something doesn't work perfectly, I fix it immediately because I need it to work for my own betting.
Completely Free
No registration, no credit card, no hidden premium tiers. All calculators and management tools are 100% free forever.
Privacy First
Your betting data never leaves your browser. No accounts, no databases, no risky data transfers, no data breaches. We use minimal cookies for site functionality and analytics that help us improve the site and attract more users.
Designed for Profit
Every tool serves one purpose: helping you make smarter betting decisions that lead to long-term profitability.
Immediately Profitable Sports Betting
Unlike most beginner sports bettors who throw $10 or $20 on games they're watching without much thought, I started by learning profitable strategies with the intent of making some side money. Unsurprisingly, it worked.
The Beginning
I'd never been into gambling, let alone sports gambling. But I have done my time in the stock market and enjoyed it. So when I was shown some betting strategies in Autumn 2024 that reminded me of the stock market, I was intrigued.
Education and Training
I invested time and money into the OddsFlex training program (which I now recommend and affiliate with) to learn simple, expert betting strategies that guaranteed profits. The training was easy to follow and the results were immediate, more than covering the one-time cost of the training within two weeks.
The Tools Were Unoptimized or Missing
Despite learning solid strategies, the available calculators were not built for my specific needs and the best tracking option was creating complicated spreadsheets that still didn't quite cut it. I'd lose profitable bet opportunities because I was switching between multiple calculators. I'd forget how much cash I had in each sportsbook. I'd accidentally deposit too much and get trapped in harsh rollover requirements.
Building the Solution
As a programmer, I decided to solve my own problem. I built a series of sports betting calculators and bankroll management tools that I could access instantly to help with my bets and keep track of my bankroll. EyeOnTheBet was born.
Now: I bet profitably using these exact tools daily paired with the OddsFlex training (more on that below). If they help me win, they can help you too.
Sports Betting Tools Included
All tools are completely free with no registration required:
Betting Calculators
- Arbitrage Calculator - Find guaranteed profit opportunities
- Free Bet Calculator - Maximize promotional bonus value
- Deposit Calculator - Avoid bonus rollover traps
- Odds Calculator - Convert odds & see implied probability
- Parlay Calculator - Calculate parlay payouts & probability
Bankroll Management Trackers
Coming Soon: Currently in development
- Sportsbook Organizer - Track balances and rollovers
- Transaction Logger - Record deposits and P/L
Sports Betting Strategy & Training
Sports betting tools are essential, but profitable sports betting requires strategy and education. I personally use and recommend OddsFlex for profitable sports betting training.
What OddsFlex Offers:
- Training from the top earning OddsJam users
- Low-to-no-risk, guaranteed-profit betting strategies
- Comprehensive sportsbook vetting and education
- Weekly live Q&A sessions & webinars with the founders
- OddsJam discount for line shopping & comparison tools
My Experience
OddsFlex got me started out right in the world of sports betting and I've yet to have a losing month. Their training has paid for the initial cost many times over by teaching me strategies I would have missed. Combined with the EyeOnTheBet calculators and discounted OddsJam line shopping tools, it's a complete professional betting toolkit.
Mission: Democratize Profitable Sports Betting Tools
My mission is simple: provide every sports bettor with the professional-grade tools needed to bet profitably, regardless of budget.
Why Free?
Profitable betting should be accessible to everyone, not just those who can afford expensive software subscriptions. I'd rather keep it free for those who are not in a position to pay, and rely on the Honor System and generosity of those who are.
Your Support
Use these betting tools for free, and if they help you manage your bankroll effectively and bet profitably, please consider supporting their development through donations using the button below. Even $5-10 helps support the many hours of development and ongoing maintenance required to keep everything running smoothly.
Frequently Asked Questions
About EyeOnTheBet
EyeOnTheBet was created by an independent sports bettor and programmer who wanted better tools for bankroll management and profitable betting decisions. The entire platform—calculators, trackers, browser extension, and website—is developed and maintained by one person who personally uses all the tools daily for their own sports betting activities.
Yes, all sports betting calculators and tools are completely free to use with no registration, no hidden premium tiers, and no credit card required. The platform operates on an honor system: if the tools help you bet profitably, donations are appreciated to support ongoing development and maintenance. But payment is never required.
EyeOnTheBet was created because sportsbooks are intentionally structured to ensure bettors lose money over time through unfavorable odds, confusing bonus terms, and psychological betting traps. These calculators and trackers help sports bettors manage their bankroll effectively, avoid common pitfalls, and make smarter decisions to beat the house and bet profitably long-term.
EyeOnTheBet is built by an active sports bettor who uses these tools daily, ensuring practical functionality and quality user experience. Key differences: all tools are free forever, no registration required, data stored locally for complete privacy, no third-party tracking, comprehensive feature set including arbitrage calculators and deposit protection tools, and ongoing improvements based on real betting scenarios.
Yes, the platform generates revenue through sportsbook affiliate links (when you sign up at recommended sportsbooks using provided links/codes) and training program affiliates (OddsFlex). Optional user donations help support ongoing development. All affiliate relationships are clearly disclosed. This revenue model keeps the tools free while supporting continued development and maintenance.
Absolutely. All calculator inputs and tracker data are stored locally in your browser and never transmitted to external servers. No accounts, no tracking, no data collection. Your betting activities remain completely private. The only data collected is anonymous website analytics (page visits, not personal betting information).
Yes, all calculators use the same mathematical formulas that sportsbooks use to calculate payouts. The creator personally relies on these calculators for real money betting decisions daily, so accuracy is critical. If you ever find a calculation error, report it immediately—it will be fixed because it affects the creator's own betting too.
Anyone who bets on sports and wants to make smarter, more profitable decisions. Whether you're a casual bettor looking to manage a small bankroll or a serious bettor seeking arbitrage opportunities, these free tools provide professional-grade calculations and tracking. If you bet on sports, you should be using betting calculators.
Join the Winning Team
Welcome to EyeOnTheBet. You're now equipped with the same professional sports betting calculators and bankroll management tools I use daily for profitable betting.
Whether you're just starting your sports betting journey or you're a seasoned bettor looking for better tools, everything you need is here—completely free.
Good luck and smart betting!