100% offline. No accounts. No cloud.
Made by ZeroCloud Apps — privacy-first software.
A private cycle tracker that actually respects your body and your data
Period apps are some of the most intimate tools on your phone — and some of the worst for privacy. Many quietly upload cycle logs, moods, and sexual health details to servers you never see.
EveLock is different.
It’s a private, offline cycle and mood tracker for iPhone that keeps everything on your device — no accounts, no cloud sync, no tracking.
Your cycle data stays where it belongs: with you.
Who EveLock is for
EveLock is designed for anyone who menstruates and wants cycle awareness without surveillance, including:
- Women and people with periods who want a simple, trustworthy tracker
- People who’ve stopped using mainstream period apps over privacy concerns
- Those living in places where cycle data may feel risky or sensitive
- Anyone wanting a calm, non-judgmental space to track their body, mood, and symptoms
If you’ve ever wondered “Where is my cycle data really going?”, EveLock is the answer: nowhere but your own device.
Track your whole cycle — in one clean calendar
EveLock focuses on a clear monthly view so you can see your cycle at a glance.
You can quickly log:
- Period days – start/end, light/medium/heavy
- Cycle phases – see past and upcoming periods in one view
- Simple predictions – upcoming cycles and fertile windows, for awareness only (wellness, not diagnosis)
Everything is designed to be:
- Fast to update
- Easy to read
- Free of clutter, ads, and confusing dashboards
Open the app, tap a day, and your calendar stays up to date in seconds.
Mood & symptom tracking that stays private
Your mood and symptoms are often as important as the dates themselves.
EveLock lets you log:
- Moods – calm, irritable, low, energized, anxious, and more
- Physical symptoms – cramps, headaches, fatigue, sore breasts, digestion changes
- Energy levels – how “full” or drained you feel
- Custom notes – anything unique to your body and experience
Over time, you start to see patterns like:
- “My energy drops 2–3 days before my period.”
- “Headaches line up with ovulation.”
- “This medication shifts my mood each month.”
Because EveLock never uploads your data, you can be fully honest without worrying where those details might end up.
Quick notes for appointments, meds & life context
Your cycle doesn’t exist in isolation — it’s influenced by stress, sleep, medication, and life events.
Use EveLock’s notes to capture:
- Medication changes or new treatments
- Doctor, specialist, or therapist visits
- Travel, jet lag, or big schedule shifts
- Stressful events or periods of rest
Those notes sit alongside your calendar, making it easier to remember what changed when before an appointment.
Simple predictions — wellness, not diagnosis
EveLock includes gentle predictions to help you plan:
- Estimated next period start
- Approximate fertile window (for wellness/awareness only)
These are there to help you:
- Plan around travel, work, or events
- Understand your own rhythm
- Notice when things shift significantly
EveLock is a general wellness tool, not a medical device, and doesn’t diagnose or replace professional care.
100% offline. No account. No cloud.
Unlike many period apps, EveLock:
- Does not require an account or login
- Does not sync to external servers
- Does not use analytics, ads, or third-party SDKs
Your data:
- Lives locally on your iPhone
- Isn’t collected, sold, or shared with anyone
- Only leaves your device if you choose to export it
That’s it. No dark patterns, no “anonymous usage data,” no surprises.
PIN & Face ID / Touch ID lock
You can add another layer of protection so that even if someone picks up your phone, they can’t open EveLock without your permission.
- Set an in-app PIN code from Settings
- Unlock EveLock using Face ID or Touch ID on supported devices
- Change or disable the PIN at any time
If you forget your PIN, you can delete and reinstall the app, which erases all data stored on that device — a privacy-first approach with no hidden back door.
One-tap PDF export when you choose
When you want a copy of your history — for your own records or to discuss with a doctor — EveLock makes it simple.
- Create a clean PDF summary of your cycles and notes
- Save it to Files, print it, or share it with a healthcare professional
- Exports are created locally and only leave your device if you send or upload them
No automatic syncing, no surprise uploads — you decide when your data moves.
Zero permissions and minimal access
EveLock is built with the ZeroCloud philosophy: ask for as few permissions as possible.
- Core tracking features work with no special permissions
- iOS will only prompt for access when you explicitly export or share a PDF
- EveLock never asks for your contacts, location, photos, or health data permissions
It’s an app designed to stay out of your way — and out of your personal life.
Delete everything in seconds
If you decide you’re done with EveLock, you can wipe your data completely.
- In Settings → Delete Data, you can erase all entries from your device
- Deleting the app itself will also remove local data
There’s no copy on a server waiting in the background. When you delete, it’s gone.
Compatibility & pricing
- Works on iPhone
- Requires iOS / iPadOS 17 or later
- One-time purchase — no subscriptions, no recurring fees
Once you buy it, it’s yours — and your data remains yours too.
Important note
EveLock is a general wellness and cycle-awareness app. It does not provide medical advice, diagnosis, or treatment.
Always talk to a qualified healthcare professional about:
- Contraception and fertility
- Irregular or painful cycles
- Pregnancy, miscarriage, or perimenopause concerns
- Any medical questions related to your menstrual health
Final call to action
Track your cycle with clarity — not surveillance.
EveLock helps you:
- Log periods, moods, and symptoms in seconds
- See gentle predictions and patterns over time
- Keep everything 100% offline on your device, protected with PIN or Face ID
👉 Download EveLock on the App Store
and start tracking your cycle in a space that’s truly private.
FAQ
Is my data stored online?
No. EveLock keeps everything on your iPhone. We don’t run servers, analytics, or trackers.
Do I need an account or sign-in?
No accounts. Open the app and start tracking.
Can I lock the app with a PIN?
Yes. Turn on the optional PIN in Settings. You can change or disable it anytime.
What if I forget my PIN?
For your privacy, PINs can’t be recovered. If you can’t remember it, you’ll need to delete and reinstall EveLock, which erases the app’s data on the device.
How do I export my data?
Use Export in the app to create a simple PDF you can save or share. Exports stay local unless you share them.
Can I move data to a new iPhone?
Yes—if you restore your new iPhone from an encrypted iCloud or computer backup that includes EveLock. The app itself doesn’t sync.
How do I delete all my data?
In Settings, choose Delete Data to erase everything from your device. Deleting the app also removes local data.
What permissions does EveLock need?
None for core features. iOS may ask for permission only when you share or save a PDF.
Does EveLock have ads or subscriptions?
No. It’s a one-time purchase with no ads.
How do I get support or a refund?
Email hello@zerocloudapps.com for help. For App Store purchases, request a refund via Apple’s Report a Problem page.
EveLock never collects, stores, or transmits your data to us. No analytics, no trackers, no accounts. Everything stays on your iPhone until you choose to export it.
One-time purchase. No subscriptions.