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Screenshots

  • Period Diary: Privacy First screenshot 1
  • Period Diary: Privacy First screenshot 2
  • Period Diary: Privacy First screenshot 3
  • Period Diary: Privacy First screenshot 4

About Period Diary: Privacy First

Your Body. Your Data. Period. Most cycle trackers profit from your most intimate health information. We built an app that does the exact opposite: complete, accurate cycle insights with zero compromises on your privacy. Your reproductive health data is among the most sensitive information you possess. Most cycle tracking apps store your logs on cloud servers, sell data to third-party brokers, or use it for targeted advertising. We built this app on a simple premise: Your Body. Your Data. Period. Why Choose Complete Privacy? 100% On-Device Storage: Everything you log is saved locally on your iPhone. We do not host cloud servers, hold decryption keys, or have access to your health history. No Account Required: Download and start logging immediately. No email registration, phone numbers, or social logins necessary. Intelligent & Simple Cycle Tracking Accurate Predictions: Get reliable forecasts for upcoming periods, fertile windows, and ovulation days. Comprehensive Symptom Logging: Track cramps, mood swings, energy levels, skin changes, flow intensity, and custom notes. Take complete control of your cycle health with 100% privacy and peace of mind.

Ratings & reviews

4.1

429 ratings

5 ★ 66% 4 ★ 8% 3 ★ 8% 2 ★ 5% 1 ★ 13%

What’s new

Version 3.1.1 · Updated September 23, 2026

Improving the app for a better user experience!

App privacy

The developer, Sasa Kolda, reported these privacy practices to Apple.

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Identifiers: Device ID
  • Usage Data: Product Interaction
  • Diagnostics: Crash Data

Used for: Analytics, App Functionality

Alternatives to Period Diary: Privacy First

Looking for apps like Period Diary: Privacy First? Here are 6 similar apps on the App Store. The highest rated is Her Calendar: Period Tracker (4.7/5), and all 6 are free to download.

Period Diary: Privacy First vs. alternatives
App Rating Price Last updated Compare
Period Diary: Privacy First 4.1 / 5 (429 ratings) Free September 23, 2026
Period Tracker: Cycle Calendar 4.6 / 5 (144) Free Jun 3, 2026 Compare
Ovulation Tracker: Period App 4.3 / 5 (83) Free Oct 4, 2026 Compare
Her Calendar: Period Tracker 4.7 / 5 (62) Free Oct 22, 2026 Compare
Period Tracker: Menstrual Flow 4.6 / 5 (178) Free Jul 30, 2024 Compare
Flyer Period Tracker 4.0 / 5 (22) Free Nov 26, 2023 Compare
Period Tracker: Monthly Cycles 4.0 / 5 (3,811) Free Mar 31, 2026 Compare

Compare Period Diary: Privacy First with the top alternatives: ratings, updates, ASO score and keyword gaps →