HerSensi tool
Cycle Variation Visualizer
Turn several period start dates into intervals, average length and range so you can see your own pattern clearly.
Cycle variation visualizer
Your result
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The tool describes the dates you entered; it does not diagnose irregular periods or a hormonal condition.
Worked example
What this looks like in real life
Dates 2 May, 31 May and 29 June create two 29-day intervals — a much clearer story than simply saying your periods feel random.
If the intervals vary widely, that is a pattern to track, not a diagnosis by itself.
What the tool cannot tell you
Does not define what is medically normal for you.
Does not identify ovulation or fertility problems.
Very heavy bleeding, severe pain or pregnancy concerns need their own assessment.
Continue from the result