# Petal Chan: Period Tracker — 100% private period tracker.

> 100% offline, private period, cycle, and fertility tracker with biometric security. (iPhone/iPad app by Aman Mishra.)

- Source: https://appshunter.io/ios/app/petal-chan-period-tracker/id6761746225 (this page in markdown: same URL + `.md`)
- Developer: [Aman Mishra](https://appshunter.io/developer/1891247849)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Rating: 4.80/5 from 4 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.2 · 52 MB
- Languages: American English
- Released: 2026-04-10
- Data updated: 2026-08-29
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/petal-chan-period-tracker/id6761746225/reviews.md

## What is Petal Chan?

Welcome to Petal Chan, the privacy-first period, cycle, and fertility tracker designed to give you complete control over your health data.

Unlike other tracking apps, Petal Chan is 100% offline. Your personal data never leaves your phone, is never uploaded to the cloud, and is never sold to third parties. Experience total peace of mind with our secure, beautifully designed interface.

KEY FEATURES

• 100% Offline & Private — Your data stays on your device. Period. No accounts, no cloud, no exceptions.

• Accurate Cycle Tracking — Log your period, predict ovulation, and track your fertile window with a smarter prediction engine refined through continuous updates.

• IUD & Symptom-Only Tracking — Don't get a regular period? Whether you have a hormonal or copper IUD, use a birth control implant, or experience amenorrhea and highly irregular cycles, Petal Chan adapts to you. Enable "Symptom-Only" mode to track your mood, cervical mucus, and body signals on your own terms—without forcing inaccurate period predictions.

• BBT Tracking & Ovulation Detection — Log your Basal Body Temperature each morning and watch Petal Chan chart your thermal shift curve to confirm ovulation automatically. Supports °C and °F. Your most accurate fertility window, no subscription required.

• Cervical Mucus & LH Test Logging — Track all four cervical mucus types and log your LH ovulation test strips as negative, high, or peak. Combined with BBT, Petal Chan builds a complete, science-backed picture of your fertile days — entirely on-device.

• Biometric Security — Lock the app with your fingerprint or Face ID. The app also blurs itself in your recent apps list so only you ever see your data.

• Expanded Daily Logs — Log Mood, Symptoms with severity ratings, Energy levels, Food cravings, and more. New cycle visualisers help you spot patterns at a glance across months.

• Dedicated Mood Tracking — Beautifully designed mood tracking to keep yourself and your data updated.

• Multiple Language Support — Use Petal Chan in English, Spanish, French, German, Portuguese, or Tagalog, and switch anytime in Settings.

• "Period is Late" Helper — Built-in guidance for irregular cycles that also adjusts your predictions automatically.

• Home Screen Widget — See your current cycle day and upcoming dates at a glance without opening the app.

• Flo, Clue & CSV Import — Switching from another app? Import your history from Flo, Clue, or any CSV export. Your data, your choice, always.

• Secure Data Export — Export your full history to a CSV file anytime for your own records or to switch devices with ease.

YOUR PRIVACY, GUARANTEED

Petal Chan is built from the ground up with privacy as its foundation — not an afterthought. No trackers, no analytics, no ads. All predictions and BBT analysis run locally on your device using well-established cycle science, so your data never needs to leave your phone to work accurately.

NO SUBSCRIPTIONS. NO ADS.

Tired of paying monthly fees just to understand your body? Petal Chan offers a generous free experience, plus a simple one-time payment to unlock all Chan+ modules and features forever. Try Chan+ risk-free with our built-in 15-day free trial.

BUILT WITH CARE

Petal Chan is independently developed and actively maintained, with regular updates focused on accuracy, design, and user-requested features. Every update is a direct result of listening to our growing community of users.

—

Petal Chan is a health-tracking tool for informational purposes only. It is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. It should not be used as a method of contraception or to assist with conception. Always consult a qualified healthcare professional for medical advice, diagnosis, or treatment.

Take back your privacy and understand your cycle better with Petal. Download today.

## Key features

- 100% Offline & Private data storage
- Accurate cycle and ovulation prediction
- IUD and Symptom-Only tracking modes
- BBT tracking and ovulation detection
- Biometric security (Fingerprint/Face ID)
- Expanded daily logs for mood and symptoms
- Import from Flo, Clue, and CSV

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Petal Pro | $19.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/petal-chan-period-tracker/id6761746225/reviews.md

### 5/5 — Totally recommend!!

*2026-07-18*

I really like this app for just seeing where I am right now, and I love the feature where you can set a timer for changing your product😂💕

## Frequently asked questions about Petal Chan

### Does Petal Chan have ads?

No, Petal Chan is completely ad-free. The app explicitly states 'NO SUBSCRIPTIONS. NO ADS.' and emphasizes its privacy-first approach without trackers, analytics, or advertisements.

### How accurate is Petal Chan's cycle tracking?

Petal Chan uses a 'smarter prediction engine refined through continuous updates' for accurate cycle tracking and ovulation prediction. It also supports Basal Body Temperature (BBT) tracking and logging of LH ovulation test strips for a more science-backed picture of fertile days.

### Can I track my cycle if I have an IUD or irregular periods with Petal Chan?

Yes, Petal Chan offers specific modes for IUD users (hormonal or copper) and those with irregular cycles or amenorrhea. The 'Symptom-Only' mode allows tracking moods, cervical mucus, and body signals without forcing inaccurate period predictions.

### Is my data safe with Petal Chan?

Petal Chan is designed with privacy as its core principle. It is 100% offline, meaning your data never leaves your device, is never uploaded to the cloud, and is never sold to third parties. It also features biometric security like fingerprint or Face ID.

### What devices does Petal Chan support?

Based on the provided data, Petal Chan currently supports iPhone devices. It also offers a home screen widget for quick access to cycle information without opening the app.

### Can I import my data from other period tracking apps into Petal Chan?

Yes, Petal Chan supports importing your history from popular apps like Flo and Clue, as well as any CSV export. This makes switching to Petal Chan seamless, ensuring you don't lose your past health data.

### How often is Petal Chan updated?

The latest version of Petal Chan is 4.1.1, and it was last updated on June 5, 2026. This indicates a relatively recent update, suggesting ongoing development and support for the application.

### What languages does Petal Chan support?

Petal Chan is available in multiple languages, including English, Spanish, French, German, Portuguese, and Tagalog. Users can switch between these languages at any time within the app's settings.

## Version history (last 5 releases)

### 5.0.0 — 2026-08-04

• Period estimates now include a likely date range and confidence level.
• Recent cycle history can adapt estimates while limiting the effect of unusual logs.
• Home, calendars, widgets and reminders now use the same estimates.
• Tracking modes and birth-control context better control which estimates are appropriate to show.
• BBT and LH information is presented more carefully and transparently.
• Improved handling of irregular, imported, duplicated and incomplete cycle data.
• Clearer explanations of what influenced an estimate.
• Refined health-context selectors and Home estimate cards.
• Improved PIN indicators, app-lock feedback and launch experience.
• Additional reliability, performance and data-reset safeguards.
Your existing history and settings remain preserved. Petal’s estimates are informational and are not medical advice.

### 4.2.0 — 2026-07-24

Cleaned up the garden! Code is now tidier and lighter.
Reinforced security shields and overall app stability.
Squashed pesky bugs to keep PetalChan running seamlessly.

### 4.1.1 — 2026-06-05

What's new in this update:

• Clue Import Error Fixed - minor bug fixes

• Clue Import Support — You can now import your history from Clue, alongside Flo and CSV imports.

### 4.1.0 — 2026-05-03

A major Petal Chan update is here.

This release introduces one of our biggest fertility tracking overhauls yet, with deeper insights, more flexibility, and better privacy-first tracking tools.

What's new in this update:

• BBT Tracking & Ovulation Detection — Log your Basal Body Temperature every morning and Petal Chan will chart your thermal shift curve to help confirm ovulation automatically.

• Cervical Mucus & LH Test Logging — Track all four cervical mucus types and log LH ovulation test results as negative, high, or peak for a more complete fertility picture.

• IUD & Symptom-Only Tracking — A big new addition for users with hormonal or copper IUDs, birth control implants, amenorrhea, or highly irregular cycles.

• Expanded Daily Logs & Cycle Visualisers — Track symptoms with severity ratings and spot patterns more clearly across months.

• Enhanced Biometric Privacy — Face ID support and recent-app blur add another layer of privacy.

• Clue Import Support — You can now import your history from Clue, alongside Flo and CSV imports.

### 3.2.2 — 2026-04-14

Hey Petal users

This update is a big one — we've completely overhauled the app from the ground up.
Everything feels smoother, more polished, and more intentional.

We're now Petal Chan — same app you love, refreshed identity and a whole new look.

Full UI redesign — cleaner layouts, refined typography, and a more cohesive feel throughout the entire app.

Home Screen & Lock Screen Widgets — see your cycle day and upcoming dates at a glance without opening the app.

Smarter predictions — our cycle prediction engine has been further refined for better accuracy across irregular cycles.

Performance improvements — faster load times and smoother animations across all screens.

Bug fixes — squashed several edge cases reported by the community. Thank you for reporting them!

If Petal Chan has helped you, leaving a review on the App Store means the world and helps more people find us.

## More apps by Aman Mishra

- [KeepDM: Locally Save Chats](https://appshunter.io/ios/app/keepdm-locally-save-chats/id6767604258)
- [Waterfall Calculator](https://appshunter.io/ios/app/waterfall-calculator/id6779210948)
- [Deposition Timer](https://appshunter.io/ios/app/deposition-timer/id6784677621)

All apps by Aman Mishra: https://appshunter.io/developer/1891247849

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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 2026-08-29.*