Overview
Free 91 Club Tools: Odds, Link and Safety Checks
Pick the tool that matches your worry. Each one runs in your browser, needs no sign-in and sends nothing you enter to anyone.
Games and odds
What a game keeps on average, how often a bet wins, and what a session looks like, with a practice mode where it helps.
| If you are wondering… | Use this | What it does |
|---|---|---|
| What does a session cost on average? | Expected-loss calculator | See the average cost of a session of round-based games, and how little luck matters once the rounds add up. |
| Can a result be predicted, and do popular rules work? | Prediction simulator | Three tests on fair random rounds: how long streaks run, whether pattern rules beat guessing, and what doubling after a loss risks. |
| How often does a crash game reach my cash-out? | Aviator odds calculator | How often a crash game reaches your cash-out target, what it keeps on average, and practice rounds with pretend money. |
| What does a colour or number round cost per hour? | Wingo calculator | Exact odds and the average cost of Wingo-style colour, number and big-small bets, by round length, with practice rounds on pretend money. |
| Does this list of results look random? | Colour history analyser | Paste recent results and see how they compare with random ones, with a plain verdict on each check and a test of the popular “bet the opposite” rule. |
| How long can a run of one colour last? | Streak odds | The exact chance of a run in a row somewhere in your rounds, the longest run to expect and how many rounds pass before a run turns up. |
| What are the odds of surviving a few picks in a mines grid? | Mines odds | The chance of each safe pick in a Mines-style game, the payout it needs, what the game keeps, and a practice grid with pretend money. |
| Where do the balls land, and what does the board keep? | Plinko odds | The exact chance of every Plinko slot, what a board returns for the payouts you type, and practice drops with pretend money. |
| What does a roll-over or roll-under bet really pay? | Dice odds | The chance of winning a roll-over or roll-under dice bet, what it pays, what the game keeps, and practice rolls with pretend money. |
| What are the chances of Dragon, Tiger and Tie? | Dragon Tiger odds | The exact chance of a tie, what Dragon, Tiger and Tie bets keep on average, and practice rounds with pretend money. |
| How likely is each total with three dice? | K3 dice odds | The exact chance of every K3-style bet on three dice, what each keeps on average, and practice rolls with pretend money. |
| What are my odds, and what does a ticket cost on average? | Lottery odds | The exact chance of every match in a pick-numbers lottery or a five-digit game, and what a ticket costs on average. |
| What does doubling after a loss need, and when does it break? | Martingale calculator | The bet ladder of a raise-after-a-loss plan, how many losses your money covers, how often it breaks and the exact average cost. |
| How likely is at least one win in a number of tries? | Probability calculator | The chance of at least one, exactly k or k or more in a number of tries, plus streaks and how many tries it takes. |
| What chance and house edge sit behind a payout? | Odds converter | Odds in decimal, fractional and American form, the chance they imply, what a stake returns and the margin in a market. |
| Is my win rate better than luck, or just a lucky run? | Win rate calculator | Your win rate, the break-even win rate for a payout and fee, a 95% range and an exact test of whether the record could be luck. |
Safety checks
Read a link, a file, a message or a payment before you act on it.
| If you are wondering… | Use this | What it does |
|---|---|---|
| Is this link what it says it is? | Login link checker | Paste a link and get a low, medium or high rating from the address alone, with the reasons listed. Nothing leaves your device. |
| Is this file the one I was meant to get? | File fingerprint checker | Check whether a downloaded file matches the SHA-256 fingerprint its publisher printed. The file never leaves your device. |
| Who gets my money if I scan this? | UPI link decoder | Read the payee, amount and note inside a upi:// link or QR text, with a list of what looks odd. Nothing leaves your device. |
| Is this message a scam? | Scam message checker | Paste a message and see the scam habits in its words, rated Low, Medium or High, with the matched words listed. Nothing leaves your device. |
| What can an app do with these permissions? | App permission checker | Tick the permissions an app asks for and read what each can do, which a games app has no need for, and which pairs matter most. |
| Is my password strong, and can I make a better one? | Password checker | Estimate the guesses a password might take, see which habits make it guessable, and make a random password. Nothing leaves your device. |
| What should I check before installing this app? | Install checklist | Twelve checks before you install an app file, answered Fine, A problem or Not checked, with a list of what to do about each. |
Limits and tracking
Set a limit before you start and keep a private record.
| If you are wondering… | Use this | What it does |
|---|---|---|
| What stake fits the limit I set? | Session budget | Turn the most you will lose in one session into a stake per round, with the exact chance of going past the limit. |
| How hard is it to win back what I lost? | Loss recovery | The gain needed to get back what you lost, the wins in a row it takes, and the exact chances of getting back or running out first. |
| How do I stop on time? | Session timer | A countdown with break reminders that also shows, in rupees, what the minutes cost on average. |
| How much have I put in and taken out? | Play ledger | A private log of play sessions with totals by week and month and a CSV export, kept only in your browser. |
Bonuses and rebates
Turn an offer into rounds and rupees.
| If you are wondering… | Use this | What it does |
|---|---|---|
| Is this bonus worth taking? | Bonus calculator | Turn a bonus offer’s turnover terms into the amount to bet, its average cost and what the bonus is worth. |
| Does a cashback or rebate offer cover the cost? | Rebate calculator | Set a rebate, cashback or fixed reward against what the game keeps, and see the net cost and the break-even rate. |
Help and fixes
Find out what is wrong with a login or a sign-up, step by step.
| If you are wondering… | Use this | What it does |
|---|---|---|
| Why can I not log in? | Login troubleshooter | Six common sign-in and install problems, a few yes or no questions each, and advice that ends on the one guide to read next. |
| Did I type my number correctly? | Phone number checker | Paste an Indian mobile number to see if it fits the ten-digit format, what the prefix means and which typing slip may be the problem. |
What they can and cannot do
Everything runs on your phone or computer. What you paste, type or choose is worked out in your browser, and there is nothing to sign up for.
Each tool answers one narrow question. The link checker reads only the text of an address and cannot see who owns a site. The fingerprint checker compares a file with a number you supply. The odds tools and the simulator use example figures unless you enter your own, and the practice modes use pretend money: they show how a session tends to run, not how any app behaves. None of them can see inside a platform, so none says whether a game is fair.
Got a link in front of you right now? Run it through the link checker first, then read the guide on finding the right link, which covers what the platform’s own help centre advises.
Free tools
Login link checkerPaste a link and get a low, medium or high rating from the address alone, with the reasons listed. Nothing leaves your device.Expected-loss calculatorSee the average cost of a session of round-based games, and how little luck matters once the rounds add up.Prediction simulatorThree tests on fair random rounds: how long streaks run, whether pattern rules beat guessing, and what doubling after a loss risks.Bonus calculatorTurn a bonus offer’s turnover terms into the amount to bet, its average cost and what the bonus is worth.File fingerprint checkerCheck whether a downloaded file matches the SHA-256 fingerprint its publisher printed. The file never leaves your device.Aviator odds calculatorHow often a crash game reaches your cash-out target, what it keeps on average, and practice rounds with pretend money.Wingo calculatorExact odds and the average cost of Wingo-style colour, number and big-small bets, by round length, with practice rounds on pretend money.Colour history analyserPaste recent results and see how they compare with random ones, with a plain verdict on each check and a test of the popular “bet the opposite” rule.Streak oddsThe exact chance of a run in a row somewhere in your rounds, the longest run to expect and how many rounds pass before a run turns up.Mines oddsThe chance of each safe pick in a Mines-style game, the payout it needs, what the game keeps, and a practice grid with pretend money.Plinko oddsThe exact chance of every Plinko slot, what a board returns for the payouts you type, and practice drops with pretend money.Dice oddsThe chance of winning a roll-over or roll-under dice bet, what it pays, what the game keeps, and practice rolls with pretend money.Dragon Tiger oddsThe exact chance of a tie, what Dragon, Tiger and Tie bets keep on average, and practice rounds with pretend money.K3 dice oddsThe exact chance of every K3-style bet on three dice, what each keeps on average, and practice rolls with pretend money.Lottery oddsThe exact chance of every match in a pick-numbers lottery or a five-digit game, and what a ticket costs on average.Martingale calculatorThe bet ladder of a raise-after-a-loss plan, how many losses your money covers, how often it breaks and the exact average cost.Probability calculatorThe chance of at least one, exactly k or k or more in a number of tries, plus streaks and how many tries it takes.Odds converterOdds in decimal, fractional and American form, the chance they imply, what a stake returns and the margin in a market.Win rate calculatorYour win rate, the break-even win rate for a payout and fee, a 95% range and an exact test of whether the record could be luck.Session budgetTurn the most you will lose in one session into a stake per round, with the exact chance of going past the limit.Loss recoveryThe gain needed to get back what you lost, the wins in a row it takes, and the exact chances of getting back or running out first.Rebate calculatorSet a rebate, cashback or fixed reward against what the game keeps, and see the net cost and the break-even rate.Session timerA countdown with break reminders that also shows, in rupees, what the minutes cost on average.Play ledgerA private log of play sessions with totals by week and month and a CSV export, kept only in your browser.UPI link decoderRead the payee, amount and note inside a upi:// link or QR text, with a list of what looks odd. Nothing leaves your device.Scam message checkerPaste a message and see the scam habits in its words, rated Low, Medium or High, with the matched words listed. Nothing leaves your device.App permission checkerTick the permissions an app asks for and read what each can do, which a games app has no need for, and which pairs matter most.Password checkerEstimate the guesses a password might take, see which habits make it guessable, and make a random password. Nothing leaves your device.Login troubleshooterSix common sign-in and install problems, a few yes or no questions each, and advice that ends on the one guide to read next.Phone number checkerPaste an Indian mobile number to see if it fits the ten-digit format, what the prefix means and which typing slip may be the problem.Install checklistTwelve checks before you install an app file, answered Fine, A problem or Not checked, with a list of what to do about each.
Common questions
Do these tools send what I enter to a server?
No. Each tool runs in your browser, and what you paste, type or choose stays on your device. The site has no accounts and no forms. The privacy page lists the little the hosting service can still see, such as which page was requested.
How accurate are the tools?
The arithmetic is exact for the numbers you give it, and the checkers do exactly what their pages say. The limits are in the inputs: example odds are illustrations, the link checker reads only the text of an address, and nothing here can see inside a platform. Use the numbers on your own screen.
Do I need to sign in or install anything to use them?
No. Open the page and use the tool. There is nothing to install and no account to make. Your browser needs JavaScript switched on, which it usually is.
Which tool should I start with?
Start with the worry you have right now. A link or a file you were sent goes to the safety checks first. If you are about to play, set a limit with the session budget, then price a session in the odds tool for your game. If a message asks for money or a code, read it with the scam message checker before you reply.
Do the practice modes use real money?
No. Practice modes draw random numbers in your browser and keep a pretend balance, with the odds you set. They show how a session tends to run. They are not any app’s game and nothing in them is connected to one.