Simple Cycle. vs Cycluna

A period tracker built for women who refuse to send their cycle to the cloud. Local-only. No account. No subscription. Nothing leaves your phone. Ever. Open the app, log your day, close it. Open it again when you need to. The cycle stays here, predictions get smarter as you log, and nobody — not us, not Apple, not your phone carrier, not advertisers — sees a single byte of it. What you get: • Cycle calendar with period dots and a passive fertile-window indicator • Predictions that learn from your own logs — more cycles, sharper predictions • Quick logging — flow, cramps, mood, optional notes • Face ID / Touch ID app lock • One period reminder, one day before — or off • Full CSV export, anytime, no questions What you don't get: • No accounts. No login. Ever. • No iCloud sync. No Apple Health sync. No cross-device anything. • No ads. No analytics. No trackers. • No subscription. No upsells. No "premium tier." • No streaks, badges, or daily check-in nagging. • No symptom mining. No AI "cycle coach." The deal: Free for 7 days. Then $1.99, once — yours forever. No subscription. No price hike. The lowest one-time price on the App Store for a serious period tracker, and the only one that physically cannot leak your data because it's never connected to anything. The fertile-window indicator is estimated from cycle averages and is not a contraceptive — not for family planning. Built by Under5 — apps that respect your time, your privacy, and your wallet.

Cycluna is a period and cycle tracker that keeps everything on your iPhone. No account. No sign-up. No data leaving your device, because there is nowhere for it to go. Know where you are Your cycle day, your phase, your fertile window, and when your next period is likely to arrive. One look and you know. A calendar that knows your rhythm Period days and fertile days marked across the month, so planning ahead doesn't take math. What your body is actually doing Each phase explained in plain language, with a hormone reference chart showing how oestrogen, progesterone, LH and FSH move through a typical cycle. A journal that's actually private Moods, headaches, and anything you want to write down. Lock it behind Face ID if you like. Patterns, only when they're real Cycluna looks at your mood and headache logs across your days, your cycle phases, and the lunar month. It only names a pattern when there is enough data to support one — and says so plainly when there isn't. No invented insights. The moon, every night Tonight's moon phase, the nights ahead, and how your own logs sit across the lunar month. Research has not established a moon–mood link, and Cycluna does not pretend otherwise — this lens describes your logs and nothing more. Reminders before it matters A gentle nudge before your period or ovulation, scheduled by your own phone. Turn them off and they're gone. Yours to take with you Export your data whenever you want. Delete it and it's gone from the device for good — there is no copy anywhere else, because we never had one.