Health Tracking & Your Cycle

your data

What Belle measures and what it means: PMDD, perimenopause, PCOS, fertility, and more.

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How Belle tracks PCOS

If you have PCOS, the thing that makes it hard to track is the same thing that defines it: your cycles don’t run on a schedule. Most cycle apps assume a rhythm you don’t have, then guess wrong. Belle tracks PCOS by measuring what’s actually happening in your body, not what a 28-day template says […]

Last updated 19/06/2026

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• How Belle tracks perimenopause
• How Belle tracks symptoms
• How Belle tracks your cycle
• Using Belle without a period: hysterectomy, hormonal BC, perimenopause

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