“Periodical” is a menstruation calendar to calculate the fertile days according to Knaus-Ogino which also allows to take notes and document symptoms.
WARNING: It is not recommended to use this calendar to avoid pregnancy! There are more accurate methods, like measuring the basal body temperature.
It is possible to backup all data to a memory card or “internal” memory, if present.
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
Or scan the following QR Code for the download via the Google Play Store:
Feature: Added Ukrainian as language and updated translations.
Bugfix: Changing the period intensity on a day without any other information caused the deletion of this entry.
Feature: When a backup is not possible the dialog to select the storage location will be opened automatically.
Bugfix: Fixed potential crash when adding new data.
Bugfix: Cleaning up unused data in the internal database.
Bugfix: Fixed missing elements in the detailed list.
Feature: Changed layout of the detailed list.
Bugfix: Fixed problems with Persian translation.
Feature: Added English in language selection.
Bugfix: Display of “help” and app information now also works in Turkish.
Feature: Language can be changed within the app.
Feature: Start of week can be set to any day of the week.
Bugfix: Fixed crash when trying to restore without a backup at the selected location.
Feature: Added Persian translations.
Bugfix: If the selected location for backups does not allow write access Periodical does not crash any longer.
Bugfix: Corrected list with details.
Feature: Navigation bar with dark background.
Bugfix: Two options for “mood” did not get saved.
Feature: New section for “mood” in the details.
Feature: Added Basque as language.
Feature: Backup and restore now use the Storage Access Framework.
Feature: Added Azerbaijani as language.
Bugfix: Backup and restore is now also possible with Android 10.
Feature: Update to AndroidX.
Bugfix: Fixed calculation of predicted ovulation.
Bugfix: Starting a period after the first day of a predicted cycle is now possible again.
Bugfix: Corrected intensity in detail view.
Bugfix: Symbols for details will now be displayed in empty days as well.
Bugfix: Adding and removing days to/from a period now always works correct.
Feature: Added new symptom and updated help text.
Feature: Added Hebrew translation.
Feature: The calendar now indicates if there are events, symptoms or notes for a day.
Feature: Events and symptoms are now separate lists in the details.
Feature: Added Greek translation.
Bugfix: Details can now also be added or opened in empty days.
Feature: Added loading screen.
Feature: New translation: Polish.
Feature: Updated translations.
Bugfix: Reverted language codes back to their generic form to avoid missing translations when a regional language setting is used.
Bugfix: Fixed a crash when changing the month using the buttons.
Bugfix: Changed preferences did not get stored when the app was closed with the preferences opened.
Feature: Updated translations.
Bugfix: Links in the version information will now be opened with the standard browser and not inside Periodical (which couldn’t work since Periodical does not request internet access).
Feature: New symptom: headache/migraine
Feature: Redesign with navigation drawer.
Feature: Simple list view with cycle lengths added again.
Feature: Added translation for Portuguese (Brazil).
Feature: Updated symptom descriptions.
Feature: Single days can be added to a period or removed from a period.
Feature: Days of the period can be marked with an individual intensity.
Feature: You can add notes and symptoms to every day.
Feature: The calendar view shows the day of the cycle and the intensity of the period.
Feature: The list view shows the intensity of the period, notes and symptoms.
Feature: Added maximum cycle length.
Feature: Updated French translation.
Feature: Added Japanese translation.
Feature: Added AppCompat for older devices.
Feature: Added option to change luteal phase length.
Bugfix: Fixed wrong sort order in list view.
Feature: Improved permission handling for Android 6 or later.
Bugfix: Fixed handling of backups in newer Android versions.
Feature: Added translations for Czech and Dutch (thanks to the Github user „Pander“) ergänzt.
Feature: Adjusted color scheme to Material Design.
Feature: Added Russian translation.
Bugfix: Added some missing content descriptions for some week day labels.
Feature: Improved accessibility support: All elements now provide a meaningful content description, so the app can also be used with TalkBack.
Bugfix: Details list in right sort order again.
Feature: Added Spanish translation (thanks to Laura Arjona Reina).
Feature: Extended the color scheme to display days before the first cycle and after the last calculated cycle.
Feature: Code cleanup and optimization.
Feature: Target platform changed to SDK version 20 (Android 4.4).
Bugfix: Fixed wrong weekday labels when changing the start of the week.
Feature: Added Italian translation (thanks to Valerio Bozzola).
Feature: Additional preference for start of the week (sunday or monday).
Bugfix: Fixed a problem with restoring databases and preferences.
Bugfix: Under Android 2 there was a crash when you tried to open the newly introduced preferences.
Feature: The French translation has been updated.
Feature: Added preferences to adjust the default length of a period in days.
Feature: “About” and “Help” are now separate activities displaying HTML and no dialog boxes any longer.
Note to developers: Beginning with version 0.15 Eclipse is not used any longer. The project now uses IntelliJ IDEA Community Edition.
Feature: Modified color scheme to display future fertile days a bit lighter.
Feature: The calculation of the longest and shortest period is now done for the last 12 entries only to avoid the fertile period getting longer but never shorter again.
Feature: The “today” marker is now a circle and not an oval any longer.
Feature: French translation updated.
Feature: Increased resolution of overlay icons for MDPI devices.
Feature: There is now a separate layout for landscape view.
Feature: The calendar is now a bit “nicer” with rounded corners, nicer “today” marker and symbols
for the first day of the period and the day of ovulation.
Feature: The day of ovulation is now being calculated and displayed in the calendar.
Feature: Added new app icons for low and high density display devices (ldpi, hdpi, xhdpi).
Feature: Detail list now allows to select an entry to display the corresponding month.
Feature: Reworked color display and focused elements in the calendar are now displayed properly.
Feature: Modified manifest so the app and its data may be backed up using ADB.
Bugix: Database cursor was not closed properly when loading the detail list.
Feature: Added new dialog to display help text.
Feature: Added GPL text to “about” dialog.
Feature: Changed color scheme from red, green, white to red, blue, yellow according to the chain of Maria Hengstberger.
Feature: Modified layout to display text in calendar view more readable.
Feature: Updated french translation.
Feature: Added French as additional language.
Bugfix: Text correction.
Feature: Better support for newer Android versions (Action Bar, adjusted layout) and improvements in the UI.
Feature: The detailed list now also shows period lengths.
Bugfix: The longest period is now correctly displayed if it is shorter than 28 days.
Bugfix: The database cursor was not closed properly after reading the data.
Bugfix: The identification of the current day in the calendar was not updated if Periodical was in the background and activated again on the next day.
Feature: An individual application icon was added.