# LunaLock — Private Period Tracker

> Private Period Tracker (iPhone/iPad app by 贺 周.)

- Source: https://appshunter.io/ios/app/lunalock/id6779429995 (this page in markdown: same URL + `.md`)
- Developer: [贺 周](https://appshunter.io/developer/1815397078)
- Category: Utilities, Lifestyle
- Price: Free with in-app purchases
- Age rating: 9+
- Requires: iOS 17 · 3 MB
- Languages: American English
- Released: 2026-06-16
- Data updated: 2026-07-28
- User reviews in markdown: https://appshunter.io/ios/app/lunalock/id6779429995/reviews.md

## What is LunaLock?

LunaLock is the period tracker that actually keeps your data private. No cloud sync. No accounts. No data collection. Your period data stays on your device, period.

Unlike other period apps that upload your most personal health data to remote servers, LunaLock was built from the ground up with one principle: your data never leaves your phone.

FREE FEATURES:
- Log period start and end dates with haptic feedback
- Smart cycle prediction with confidence ranges (not just averages)
- Track 6 common symptoms: cramps, bloating, headache, fatigue, acne, mood swings
- Log your daily mood with 6 mood options
- Record flow level from spotting to heavy
- Calendar view with period and prediction markers
- FaceID and PIN lock with emergency shake-to-lock
- Auto-lock timer for extra security
- Period reminders with customizable advance notice
- Onboarding privacy promise
- Delete all data anytime
- No ads, no accounts, no tracking

PRO FEATURES (one-time $3.99 purchase):
- Trend charts for cycle length, symptom frequency, and mood patterns
- Data export as PDF for doctor visits or JSON for other apps
- Home screen widget with countdown and cycle day
- 5 beautiful color themes (Luna, Rose, Ocean, Forest, Sunset)
- HealthKit write-only integration (optional)
- Monthly and annual cycle reports
- Emergency shake-to-lock
- All future updates included

WHY LUNALOCK?
Other period apps like Flo and Clue require accounts, collect your data, and use subscriptions. LunaLock is different:
- $3.99 once, not $4.99/month forever
- Zero data collection - we literally cannot see your data
- FaceID lock means even someone borrowing your phone cannot see your period info
- Emergency shake-to-lock for when you need instant privacy

LunaLock. Your period. Your phone. Nobody else's.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| LunaLock Pro | $3.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-06-16

No release notes.

## More apps by 贺 周

- [多功能驱蚊灯 --多模式，驱蚊，阅读，小夜灯，可定时熄屏睡眠](https://appshunter.io/ios/app/id6746356117)
- [Scientific math Calculator](https://appshunter.io/ios/app/scientific-math-calculator/id6759213986)
- [bingotimer](https://appshunter.io/ios/app/bingotimer/id6759560391)
- [filefinder pro](https://appshunter.io/ios/app/filefinder-pro/id6759831480)
- [FamHero](https://appshunter.io/ios/app/famhero/id6760260869)
- [Pawell](https://appshunter.io/ios/app/pawell/id6760383565)

All apps by 贺 周: https://appshunter.io/developer/1815397078

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-28.*