Periodical has 27 thousand installs. Users love it: 4.8 stars from 173 ratings.
Periodical is made and published by
Arno Welzel.
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The app name, icon, screenshots and description belong to Arno Welzel and are shown as
published on Google Play.
About Periodical
Periodical is a health & fitness app developed by Arno Welzel.
Install Statistics
Periodical has been installed 27 thousand times. In the last 30 days, the app was installed 240 times.
User Ratings
Periodical is rated 4.84 out of 5 stars. The rating is based on 170 ratings.
App Information
Periodical is freely available from Google Play. The app 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 since May 2012.
Description by Arno Welzel(from Google Play)
This application calculates the fertile days according to Knaus-Ogino and can track menstrual symptoms.
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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.
★★★★★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.
★★★★☆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
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Technologies used by Periodical
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