Periodical

1.96

Arno Welzel

4.82

166 reviews

10,000+
Downloads

Free

A menstrual calender with calculation of fertile days according to Knaus-Ogino.

4.82 · 166 reviews · 10,000+ downloads

About Periodical

Periodical is a health & fitness app developed by Arno Welzel.

Download Statistics

Periodical has been downloaded 26 thousand times. In the last 30 days, the app was downloaded 250 times.

User Ratings

Periodical is rated 4.82 out of 5 stars. The rating is based on 170 ratings.

App Information

Periodical is FREE to download. The APK download size is 2.74 MB. The latest version available is 1.96. The last update was on April 19, 2026.

Technical Requirements

Periodical requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play May 2012.

Description

This application calculates the fertile days according to Knaus-Ogino and can track menstrual symptoms.

More data about Periodical

Price	Free to download
Total downloads	26 thousand
Recent downloads	250
Rating	4.82 based on 170 ratings
Ranking	Not ranked
Version	1.96
APK size	2.74 MB
Number of libraries	12
Designed for Android	5.0+
Suitable for	Everyone
Ads	NO ads

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Alternative downloads for the Periodical app

Periodical compared with similar apps

Common keywords of similar apps

Calculation Knaus Ogino Memory Free Software License Version Menstrual Fertile Days

Keywords missing from this app

Period Ovulation Calendar Tracker Cycle Pregnancy App Fertility Track Data Health Symptoms Calculator Periods Tracking Cycles Temperature Day Body Women Pms Date Control Menstruation Reminders Easy Irregular Reproductive Pregnant Accurate Predictions Cervical Weight Predict Features Helps Mood Designed Understand Diary Conceive Birth Moods Mucus Record Safe Simple

Google Play Rating history and histogram

Rating history

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Downloads over time

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Periodical has been downloaded 26 thousand times. Over the past 30 days, it has been downloaded 250 times.

Changelog of Periodical

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Developer information for Arno Welzel

Arno Welzel

android@arnowelzel.de

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Comments on Periodical for Android

★★★★★ Alair Abernethy · Jun 17, 2015

Simple and elegant For tracking your periods with a minimum of fuss this is an elegant solution. Major praise for it being plain looking, and not covered in pink or flowers! Does what it says on the box.

★★★★★ Madeleine Read · Aug 27, 2024

For what I need -- very basic period tracking -- Periodical is perfect: two taps every month are enough to track what I want to, and no worries that my data is being sold or stolen. I used to use Clue and am so glad not to be bombarded with ads to upgrade or have to click through an endless series of buttons in order to track a single day.

★★★★☆ E · Jan 12, 2026

Private, no frills' app; I've used it for years. Being offline and having a neutral color scheme were the primary reasons I chose Periodical over other apps. I personally find it pretty accurate, but it depends on your body chemistry. While it does predict your ovulation window I do wish it had a system for actually adjusting the predictions based on user data, like opk test results. I used a different app for a while that did this but came back to Periodical when that one broke.

★★☆☆☆ Holly M · Sep 30, 2023

Love the app, everything is easy to use. But please add notifications! The main point of cycle tracking is so that you and your sheets are prepared for the big week. It's not possible to always be on top and remembering to check the app. Please add reminder notifications.

Google Play Rankings for Periodical

This app is not ranked

Technologies used by Periodical

1 permissions · 12 libraries

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