Simple Cycle.

$1.99 Once. Private Forever.

Only for iPhone

Free · In-App Purchases

iPhone

A period tracker that doesn't talk to anyone. No accounts. No subscription. $1.99 once. Private forever. 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.

Ratings & Reviews

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v1.1 — what changed • Refreshed visual design — Phosphor icons throughout, tighter palette, calmer screens. • Passive fertile-window indicator on the calendar (opt-in, off by default). Estimated only — not a contraceptive, not for family planning. • Cycle Summary Card refresh — the "next period in N days" countdown is now the hero, not buried. • Trial visibility — see exactly where you are in your 7-day trial from Settings. • Faster, clearer day-detail logging. • Various fixes and polish. Pricing unchanged. $1.99 once, never a subscription. Ever.

Version 1.1

The developer, CoreLift LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary based, for example, on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Size
    • 4.8 MB
    Category
    • Health & Fitness
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    Provider
    CORELIFT LLC
    • CORELIFT LLC has not identified itself as a trader for this app. If you are a consumer in the European Economic Area, consumer rights do not apply to agreements between you and the provider.
    Copyright
    • © 2026 CoreLift LLC
  • Developer Website
  • Privacy Policy

    • More by CoreLift LLC

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