Belle Cycle App overview
The Belle Cycle App is the longest-running Belle product — a focused iOS and Android app for cycle tracking, symptom logging, mood, and PMDD support. This is what most people mean when they say “the Belle App.” Here’s what it does and how it fits with the rest of Belle.
What the Cycle App is for
Tracking the patterns of a body that doesn’t run on a 24-hour clock. The Cycle App is built around four daily inputs:
- Where you are in your cycle
- Symptoms (pain, energy, sleep, anything physical)
- Mood (irritability, anxiety, sadness, calm — the things PMDD makes loud)
- Notes (one optional sentence)
The check-in takes about 5 seconds. After 2–3 cycles, the app starts surfacing your specific patterns — your luteal-phase window, your worst sleep day, your most sensitive evening — using the same clinical frameworks (PSST, DRSP, STRAW+10, Rotterdam) your doctor would use.
Who the Cycle App is for
Anyone whose cycle is the question they want to understand better. Belle Cycle App is used by:
- PMDD — its original audience, and still its strongest fit
- Perimenopause — stage tracking via STRAW+10
- PCOS — metabolic pattern recognition
- Endometriosis / adenomyosis — symptom-cycle correlation for clinician visits
- Fertility / TTC — basic ovulation and cycle predictions
- General cycle tracking — for anyone whose hormones matter to how they feel
The app works without the Belle Ring. The Ring adds continuous biometric data; the App is fully usable on phone-only input.
Belle+ subscription
The Cycle App is free to download and use for the basics — daily check-ins, cycle predictions, symptom logging, basic insights. Belle+ is the optional paid subscription that unlocks:
- PMDD pattern analysis with DSM-5 + PSST/DRSP scoring
- Perimenopause stage tracking with STRAW+10 + NICE 2024 guidelines
- Doctor-ready PDF exports
- CBT toolkit and cycle-aware coaching
- Priority email support
You can use the Cycle App indefinitely without subscribing. See Belle+ subscription — what’s included for the full split.
About the PMDD Course
Separately from Belle+, the Cycle App offers a one-time PMDD Course — a 12-week guided program that includes 12 months of Belle+ access bundled in. Same app, different purchase. See PMDD Course vs Belle+: what’s the difference? for which one fits you.
How the Cycle App fits with the Belle Ring
The Cycle App and the Belle Ring app are two separate apps, not modes of one. They share an account, a backend, and your data — but each has its own purpose:
- Belle Cycle App owns symptom logging, mood, cycle predictions, the PMDD Course, Belle+
- Belle Ring app owns the Ring hardware (pairing, firmware, biometrics)
If you have a Ring, you’ll use both: the Ring app for Ring-specific data, the Cycle App for cycle-and-symptom tracking. Same login.
How to get started
Welcome to Belle: how the Cycle App gets to know your cycle → walks through what happens across your first three cycles — when Belle has a baseline, when it starts comparing, and when the real pattern recognition kicks in.