Call Bets Edge
by
Call Bets Edge
Enter the Number
Numbers entered: 0
Wheel Heatmap
Enter numbers to see the heatmap
Area Breakdown
Voisins–
Tiers–
Orphelins–
Zero–
History
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How to Use

  • Step1
    Enter the Numbers
    Tap the button for each number the wheel lands on.
    The buttons match the European Roulette red/black color layout.
    The heatmap and area breakdown update in real time with every tap.
  • Step2
    Check the Heatmap
    The heatmap shows where results are clustering on the wheel — darker colors mean more hits in that zone.
    The wheel is divided into four areas:
    • Voisins (Blue): Upper half of the wheel, centered on zero (17 numbers)
    • Tiers (Orange): Lower half of the wheel (12 numbers)
    • Orphelins (Purple): Numbers outside Voisins and Tiers (8 numbers)
    • Zero (Green): Zero spiel, including 0 (7 numbers)
  • Step3
    Check the Area Breakdown and HOT AREA
    The Area Breakdown compares each zone's actual hit rate against its expected value (theoretical probability).
    Any area where the hit rate exceeds the expected value is showing a statistical bias.
    The HOT AREA indicator automatically highlights whichever area is furthest above its expected value.
  • Step4
    Undo or Reset Your Input
    To remove the last entry, tap "Undo Last". To start over completely, tap "Reset".

What This Tool Shows You

The European Roulette wheel divides its numbers into specific sections.
By logging your results, you can use the heatmap to visually identify which areas are running hot.

Wheel Heatmap

Numbers are displayed in their actual wheel order. The more often a number hits, the darker its cell appears — making it easy to spot hot zones at a glance.

Area Breakdown

Shows the hit count and hit rate for each of the four areas — Voisins, Tiers, Orphelins, and Zero — alongside the theoretical expected value for comparison.

HOT AREA

Automatically identifies and displays whichever of the four areas has the highest hit rate relative to its expected value.

About Call Bets

Call Bets is a roulette strategy where you cover numbers within one of four wheel sections using a specific chip placement.
For a manual walkthrough and full breakdown of the logic, check out Call Bets Strategy Guide.

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Got a Request?

At The Otaku Bettor, we're always open to ideas — whether it's "I wish there was a tool for this..." or "This would be so much better with that feature...!"
Whether or not I can actually pull it off is another story (lol), but if you've got an idea you'd like to share with Hotaru, feel free to drop it through the contact form anytime!
Always happy to hear from you!