Instantly calculate pachinko spin rate, break-even point, and expected profit.
Shift from relying on intuition to data-driven decision-making.
"How many spins does this machine give per 1000 yen?"
"Is it above or below the break-even point?"
"If I keep playing this machine, will my expected profit be positive or negative?"
Mawaru-da is a pachinko-specific calculation tool that answers these questions on the spot.
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📊 Function ① Spins per 1000 yen calculation
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Enter the starting spin count and start.
The "spins per 1000 yen" is automatically calculated from the amount invested and the current spin count.
* Add investment with a single tap using the +500 yen / +1000 yen buttons
* Quickly count spins with the +1 / +10 buttons
* Simple design that allows one-handed operation even during gameplay
You can quickly grasp the spin rate while looking at the data counter in the hall.
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📈 Function ② Borderline & Expected Profit
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By entering the jackpot probability, total payout, and exchange rate, the borderline is automatically calculated.
* Simultaneous display of equivalent borderline / borderline by exchange rate
* Real-time display of expected profit per spin
* See expected profit per 1000 yen at a glance
* Instantly determine if the current spin rate is above the borderline
For those who "don't know the total payout," a function to estimate from the payout per spin, probability of winning a bonus round, and number of bonus rounds is also included. For bonus round loop machines, you can calculate the borderline immediately without having to check the spec sheet.
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🔍 Feature ③ Machine-Specific Borderline Search (NEW)
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Includes borderlines for over 385 pachinko machines.
• Quickly search by machine name (Hiragana or Katakana OK)
• Displays a list of borderlines for different exchange rates from equivalent to 2.5 yen
• Automatically compares the difference between your rotation rate and the borderline
• Automatically calculates estimated expected earnings per 1000 yen, hourly wage, and daily expected earnings
• One-tap access to detailed machine information and analysis articles
Machine data is automatically updated daily. Borderlines for new machines are also added continuously.
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🎰 Feature ④ Calculates the probability of hitting a losing streak
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Simply enter the jackpot probability and the current number of games played.
This function statistically calculates the probability of the current winning streak occurring.
Checking the numbers based on probability theory provides valuable information for making calm and rational decisions.
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🔗 Function 5: Consecutive Win Checker
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This function calculates the probability of consecutive wins in both probability variation and ST (Special Time) modes.
• Calculates consecutive win probability from the probability variation continuation rate
• Can also be calculated from ST jackpot probability × ST count
• Instantly shows "How many more consecutive wins are possible?"
Supports both probability variation loop machines and ST machines.
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💡 Recommended for those who:
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✓ Want to know the exact number of spins per 1000 yen
✓ Want to check if the break-even point is exceeded
✓ Want to quickly find the break-even point for each machine
✓ Want to play only machines with a positive expected return
✓ Want to check the probability of losing streaks numerically
✓ Are curious about the probability of consecutive wins
✓ Want to improve their pachinko earnings
✓ Want to play based on data
✓ Are not good at complicated calculations but want to put the break-even point theory into practice
Suitable for a wide range of users, from beginners to advanced players.
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🎯 Simple Design for Easy Use
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• Instantly displays results by simply entering the required information
• Large buttons for easy tapping during gameplay
• Easy-to-read screen for quick checks even in the pachinko parlor
• Minimal ads. Doesn't interfere with calculations
No need to memorize complex formulas.
Leave the rotation rate, border, and expected value calculations to the app.
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📱 App Information
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• Price: Completely Free
• Compatibility: iOS / Android
• Category: Utility
• Developer: Kyosuke Takahashi
Calculate rotation rate, check borderlines, understand expected earnings, search borderlines by machine type, check probability of losing.
All the calculations you need for playing pachinko are in one app.
Download now and start data-driven strategies.
Automatically calculates spins per 1000 yen, break-even point, and expected profit. A free tool that also supports break-even point searches for 385 machines, as well as probability of losing streaks and winning streaks.