English
Periodical icon

Periodical

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

License
GPL-3.0-or-later
Package
de.arnowelzel.android.periodical
Category
Calendar & Agenda, Health Manager, Sports & Health
Latest version
1.97 · Sep 5, 2026
Minimum Android
Android 6

Download 1.97

Screenshots

Periodical screenshot 1 Periodical screenshot 2 Periodical screenshot 3 Periodical screenshot 4 Periodical screenshot 5 Periodical screenshot 6

Description

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

WARNING: It is not recommended to use this calendar to avoid pregnancy! There are more accurate methods, like measuring the basal body temperature.

The data can be backed up on a memory card or "internal" memory, if present.

If you have any further questions or want to help me with translations in other languages, please contact me via e-mail - thank you.

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.

You can obtain the source on my website.

All versions

VersionReleasedMinimum AndroidSize
1.97 Sep 5, 2026 Android 6 2.9 MB
1.96 Apr 20, 2026 Android 5.0 2.8 MB
1.95 Nov 22, 2025 Android 5.0 3 MB
1.94 Nov 17, 2025 Android 5.0 3 MB
1.93 Oct 16, 2025 Android 5.0 3 MB
1.92 Apr 17, 2025 Android 5.0 3 MB
1.91 Apr 13, 2025 Android 5.0 3 MB
1.90 Apr 5, 2025 Android 5.0 3 MB
1.80 Dec 9, 2024 Android 5.0 3 MB
1.76 Nov 15, 2024 Android 5.0 2.7 MB
1.75 Oct 25, 2023 Android 5.0 2.6 MB
1.74 Oct 8, 2023 Android 5.0 2.6 MB
1.73 Sep 25, 2023 Android 5.0 2.6 MB
1.72 Jun 16, 2023 Android 5.0 2.5 MB
1.71 May 12, 2023 Android 5.0 2.5 MB
1.70 Apr 15, 2023 Android 5.0 2.6 MB
1.66 Jun 30, 2021 Android 5.0 1.5 MB
1.65 May 29, 2021 Android 5.0 1.5 MB
1.64 Jan 7, 2021 Android 5.0 1.5 MB
1.63 Dec 29, 2020 Android 5.0 1.5 MB
1.61 Oct 18, 2020 Android 5.0 1.5 MB
1.52 Oct 17, 2020 Android 5.0 1.5 MB
1.51 Oct 10, 2020 Android 5.0 1.5 MB
1.50 Oct 10, 2020 Android 5.0 1.5 MB
1.49 Sep 8, 2020 Android 5.0 1.5 MB
1.48 Jul 29, 2020 Android 5.0 1.5 MB
1.46 Jul 23, 2020 Android 5.0 1.5 MB
1.45 Jul 16, 2020 Android 5.0 1.5 MB
1.44 Apr 21, 2020 Android API 14 1.6 MB
1.43 Feb 4, 2020 Android API 14 1.6 MB
1.42 Aug 26, 2019 Android API 14 1.5 MB
1.41 Aug 1, 2019 Android API 14 1.5 MB
1.40 Jul 30, 2019 Android API 14 1.5 MB
1.32 May 30, 2019 Android API 14 1.5 MB
1.31 Mar 25, 2019 Android API 14 1.5 MB
1.30 Mar 18, 2019 Android API 14 1.5 MB
1.23 Feb 3, 2019 Android API 14 1.3 MB
1.22 Jan 15, 2019 Android API 14 1.3 MB
1.20 Nov 1, 2018 Android API 14 1.3 MB
1.18 Oct 21, 2018 Android API 14 1.3 MB
1.16 Aug 25, 2018 Android API 14 1.3 MB
1.15 Aug 17, 2018 Android API 14 1.3 MB
1.14 Aug 15, 2018 Android API 14 1.3 MB
1.13 Aug 9, 2018 Android API 14 1.3 MB
1.12 Jul 25, 2018 Android API 14 1.3 MB
1.11 Jul 19, 2018 Android API 14 1.3 MB
1.06 Jul 2, 2018 Android API 9 940.4 KB
1.05 Mar 27, 2018 Android API 9 929.2 KB
1.04 Mar 15, 2018 Android API 9 929.2 KB
0.35 Feb 20, 2018 Android API 9 899.5 KB
0.33 Nov 28, 2017 Android API 9 896.5 KB
0.32 Jul 27, 2017 Android API 9 908.8 KB
0.31 Apr 13, 2017 Android API 9 903.8 KB
0.30 Dec 22, 2016 Android API 9 108.1 KB
0.29 Sep 29, 2016 Android API 8 105.6 KB
0.28 Sep 29, 2016 Android API 8 102.2 KB
0.27 Sep 29, 2016 Android API 8 102.1 KB
0.23 Jan 1, 2015 Android API 8 97.1 KB
0.22 Oct 28, 2014 Android API 8 91 KB
0.21 Sep 22, 2014 Android API 8 85.5 KB
0.19 Sep 6, 2014 Android API 8 78.8 KB
0.18 Sep 6, 2014 Android API 8 78.6 KB
0.17 Sep 5, 2014 Android API 8 73.3 KB
0.16 Aug 31, 2014 Android API 8 73.2 KB
0.14 Mar 28, 2014 Android API 8 70.5 KB
0.13 Jun 22, 2013 Android API 8 70.2 KB
0.10 Apr 7, 2013 Android API 8 79.2 KB
0.9 Mar 22, 2013 Android API 8 62.3 KB

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