Best Private Period Tracker for iPhone (2026)

When people search "private period tracker" they usually mean one thing: health data that stays under their control. In practice, privacy comes down to four checks: no forced signup, offline core usage, no ad/analytics profiling, and clear local data handling.

Privacy checklist before installing

1. Open the app without creating an account.
2. Enable airplane mode and verify that logging still works.
3. Read privacy policy language about storage and tracking.
4. Check whether ads or third-party SDKs are embedded.
5. Confirm backup/export options for personal control.

What matters most in daily use

• Fast period and symptom logging
• Clear cycle calendar view
• Predictive windows that remain understandable
• Optional local reminders
• No friction from popups, upsells, or account prompts

LocalOne Period & Cycle (2026 update)

LocalOne Period & Cycle is designed for exactly this use case: fully offline cycle tracking, no account, no cloud dependency, and no ad model.

• One-time pricing: $1 forever
• Offline by default: use anywhere
• Private data model: data stays on device
• Practical tools: cycle, symptom, notes, reminders
• Control: export for personal backups

FAQ

Does it require signup? No.

Can I use it without internet? Yes, fully offline.

Does it sell or upload health data? No, data remains on your iPhone.

Are there ads or subscriptions? No.

Can I export data? Yes, for personal backup.

For product context, also see Introducing LocalOne Period & Cycle.