Randomness & Fairness Audit
See how our wheels choose results, why streaks happen, and how we keep decisions private.
What “fair” means for a Yes/No wheel
For an equal-probability wheel, “fair” means each option (Yes and No) has the same chance of being selected: 50/50 over many spins.
How the wheel picks the outcome (implementation overview)
Each spin does two key things:
- Generates a random seed per spin (a random angle + rotation count).
- Maps the seed to the segment under the fixed pointer and then animates the wheel so the visual result matches the selected option.
For a 2-segment wheel, the full circle is split into two equal ranges. The selected segment is the one whose range contains the random angle.
Why streaks happen (and why they are normal)
Even with a perfectly fair coin-flip equivalent, you can see streaks. Short streaks are not evidence of bias—they are expected outcomes in random sequences.
Example: the probability of getting 5 “Yes” results in a row is (1/2)^5 = 1/32 ≈ 3.125%.
Does the animation change the result?
No. The result is determined by the seed and wheel math. The animation is there to provide clear, engaging feedback that the wheel has made its choice.
Privacy note
Everything happens in the browser. We don’t send your question or outcome to a server. If you open “My recent spins”, the history is stored locally on your device and limited to the most recent entries.
Try it responsibly
Use the wheel for low-to-medium-stakes decisions, group tie-breakers, and breaking decision paralysis. For life-changing or high-stakes choices, treat the result as one input and combine it with reflection and (when appropriate) professional advice.