Orbit Cycle vs Luna

Orbit Cycle is a private, offline period and cycle tracker built for real bodies — not just a calendar with a red dot. WHY ORBIT CYCLE Most period apps give you one guessed date and call it a prediction. Orbit Cycle shows you an earliest-to-latest range with a confidence level (High, Medium, Low) that gets smarter the more you log — plus a Cycle Health score so you can see, at a glance, whether your cycles are trending regular or not. EVERYTHING YOU NEED, NOTHING YOU DON'T • Quick Log — track flow, symptoms, mood, and cervical discharge in seconds • Smart predictions — period and fertile-window forecasts with a real confidence range, not a single guess • Cycle Health score — a running read on your cycle regularity • Fertility & ovulation tracking • Gyno Visit Prep — auto-detects red-flag symptom patterns, generates questions to ask your doctor, and exports a shareable PDF or clipboard summary before your appointment • AI Cycle Coach — ask questions in plain language; works fully offline too • Body Literacy Library — 22 in-depth articles covering PCOS, endometriosis, fibroids, perimenopause, PMDD, birth control, thyroid, teen periods, postpartum, vaginal health, and more • Period product inventory — tracks how many pads/tampons/cups you actually use and estimates when you'll run out • Light, dark, and alternate themes • Full backup & restore, and one-tap permanent data deletion BUILT FOR EVERY STAGE Whether you're tracking your first period as a teen, managing PCOS or endometriosis, navigating perimenopause, or just want to know when your next period is coming — Orbit Cycle adapts to you. YOUR DATA STAYS YOURS Orbit Cycle runs entirely on your device. No account, no sign-up, no cloud sync of your health data, no ads. Your cycle history never leaves your phone unless you choose to export it yourself. Track smarter. Understand your body. Walk into every doctor's visit prepared. MEDICAL DISCLAIMER Orbit Cycle provides general health information for educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional with any questions you may have about your health or a medical condition.

Luna is the period and fertility tracker that keeps your most personal health data exactly where it belongs — on your device. No accounts. No cloud sync. No data sharing. Just intelligent, private cycle tracking powered entirely by on-device machine learning. YOUR DATA NEVER LEAVES YOUR PHONE Luna was built from the ground up with privacy as the foundation. Every prediction, every insight, every log entry is processed and stored locally. We can't see your data because it never reaches us — not even anonymized. SMART PREDICTIONS, PRIVATELY POWERED Luna's on-device ML model learns your unique cycle patterns over time, delivering increasingly accurate predictions for: Period start and end dates Fertile windows and ovulation estimates PMS and symptom pattern recognition Cycle length trends and irregularities TRACK WHAT MATTERS TO YOU Daily symptom and mood logging Flow intensity and duration Basal body temperature (BBT) Cervical mucus and ovulation signs Intimacy and contraception notes DESIGNED FOR EVERY BODY Luna adapts to irregular cycles, post-hormonal transitions, perimenopause, and more. There's no "normal" cycle — Luna learns yours. BUILT FOR TRUST At a time when reproductive health data has never been more sensitive, Luna takes a firm stance: what happens on your phone stays on your phone. No account required to get started. No subscription needed to unlock your own data. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/