Hello.
The link to the app that you provided for Google Play doesn't exist, and the APK appears to be officially unauthorised by Apple, which means that it can be considered a possible phishing link.
Also, Steemit is considered a hacked chain, and its platform frontend as malicious application. This also relates to Blurt.
Ecotracker is under development. Now is only for Android and to find it on Google Play you must be a certified tester. If you want to test it give me privately your google mail account and I will add you to certified tester or download the apk. Have a nice day.