It starts getting annoying! Another illegal copy of Periodical shows up again, this time with the name “Periodical calendar” from someone called “Eminantapps”. Currently available at https://play.google.com/store/apps/details?id=eminantapps.infotech.periodical_calander:
This is now the fourth case of this kind I am aware of. It’s just so easy to use existing sources and build your own app that contains advertising.
I can not really top this happening – but I report every single case to Google and also write to the creators of these apps to delete them immediately.
As a reminder: Periodical is not public domain but has been released under the GPL! The GPL is legally binding and requires that the author of the work on which the app is based is named and that the sources of the modified version are available.
Unfortunately some people ignore the principles of “Open Source” and the GPL. Again I have to deal with an illegal copy of Periodical (also see Again an illegal copy of Periodical and Illegal copy of Periodical). This time it is called “Periods Tracker”, published by “joettaraubapps” (https://play.google.com/store/apps/details?id=com.joettaapps.periodstracker):
Many thanks to Marie of https://bloodyhealth.gitlab.io for the hint via e-mail!
The procedure corresponds to the known pattern – one takes the sources, removes all references to the original and inserts advertising or offers the app as a paid version. I have already contacted “joettaraubapps” by e-mail and also sent a notice about a copyright infringement to Google.
As a reminder: The GPL is legally binding and derivative copies of my app must comply with certain conditions!
With the permission of the sender I’m honored to publish a positive feedback about Periodical, thank you very much:
Dear Mr Welzel,
I just wanted to let you know, how much I am enjoying the Periodical app for the last three months. I was using the Flo once before, but it was kinda impractical and never gave me the right information, so after I’ve read how they handle their clients’ information, I was looking for an app that will actually work for me and I found Periodical. I really enjoy how it counts the average lenght of my cycle, how I can add almost any info about my period, the minimalistic design and how it can be easily worked with.
I just wanted to thank you for your work because it trully makes my everyday life much better. Keep up the good work :)
Thank you very very much.
Rudolfová Pavla (Czech Republic)
There is again a new version of Periodical with a number of changes:
- Events and symptoms in the details are now separate lists.
- The calendar now indicates if there are events, symptoms or notes for a specific day.
- Added Greek translation.
With this version there are no less than 13 languages available (soon it will be 14). Thanks to all translators and developers at Crowdin and Github for their contributions!
For some time now I have been using the online translation service Crowdin for translations of Periodical. This service is free to use for open source projects without any commercial intentions. There I have already received Polish as an additional translation (thanks Tomasz!).
Now another translator has contacted me via Crowdin and offered do the translation for Hebrew. Apart from the fact that there are not many applications that directly support this language, this is also interesting because Hebrew is written from right to left and I may have to do adjustments in the software to support this.
Thanks to all translators for their help!
The Android app “Öffi” has become Open Source and is available at GitLab:
This action was preceded by the suspension of the app from Google. See also the report at Golem (in German).
A while ago someone informed me about an illegal copy of Periodical which was modified without providing sources of the modified version. This copy does not exist any longer.
But there are also business-minded people who create their own version based on the existing sources (as from August 2017) that contains paid ads – of course only after deleting all references to the true origin:
I already wrote about the topic “rooting of Android” in 2013. Since then the direction of Android itself changed a lot.
Things which where not very popular five years ago are now quite normal: films are being watched on mobile devices with services such as Netflix and games like Pokémon GO generate huge sales (by the end of 2017 about 890 million USD). For the providers of such services it is of course important that the data of the apps is not accessible by third parties – for example to protect DRM mechanisms.
Another area are payment services, such as Google Pay, which got introduced in 2015 – and again, it is important that no third party can access confidential data.
In September 2017 a security hole concerning Bluetooth was discovered in Android and published under the name “BlueBorne”. Unfortunately Sony decided not to provide any updates for the Xperia Z3 Compact anymore, as the device was already too old after nearly 3 years on the market (also see my other post about this).
Recently someone informed me via Github about a copy of Periodical on Google Play, which was published as “Period Tracker” – however without the modified source code and without mentioning the original source, which is a clear violation of the GPL.