Mobile Apps | Android OS & Apple iOS

All Apps tested by myself!

Motto: Quality, not Quantity

Sorting by app name is no rating! Purchase date and own rating with 1–5 stars for each app. Where “date of purchase” means “date of installation” for free apps. I also mention in-app purchases and donations as well as separately/subsequently payments.

Under “System Requirements” I mention the operating system version for which the app is suitable.

Checking the app quality/seriousness of a developer naturally includes a review of his/her website and privacy policy.
In doing so, I also see if the offered app is only available for iOS or also for other operating systems and take this into account.

Further reviews are already in progress. Icon: laughing Smiley

Test reports on all apps already tested are accessible via the hamburger menu at the top right.
Apps that are available for iOS and Android OS or platform-independent, I list below sorted in categories …

App Sources

Smartphones owe their success to their expandability through apps. They are distributed online via sales platforms called app stores. In addition to these, there is also the developer platform GitHub for the open Android operating system, where programmers make their software available. In addition, many independent developers offer their apps for download on their own websites.

Apple iOS

Apple App Store

(from September 2023, apps from iOS version 17 onwards can also be obtained from other sources – my security advice also applies to this!)

Android OS

Google Play (Front end & Repository for apps distributed by Google)
F-Droid (Front end & Repository for Open Source Software)
Aurora Store (Front end for all apps distributed by Google)
Aurora Droid (Front end for all apps distributed by F-Droid)

Security Advice

Do not download apps from unsafe sources! Be suspicious and check carefully from whom you obtain software. The sources I have mentioned below are reputable. However, pay close attention to the spelling of the Internet addresses, because websites of reputable providers are often copied and registered with similar domains. In this way, you could get malware on your device. Also read app reviews and avoid apps with few good ratings (stars).

Data Security

DNS Resolver, Firewall, OTP, Passwortmanager, Werbeblocker

All Systems (online)

Bitwarden (Password Vault + OTP)
NextDNS (DNS Resolver + Firewall)

Apple iOS

1Blocker (Ad blocker + Firewall)
DNSCloak (DNS Resolver + Firewall)
OTP Auth
Strongbox (Password Vault + OTP)

Android OS

Aegis Authenticator (OTP)
KeePassDX (Password Vault, OTP)
RethinkDNS (DNS Resolver + Firewall)

E-Book & Media Player

Apple iOS

Amazon Kindle
Apple Books
Apple Music
Apple Podcasts
Cs Music

Android OS

Amazon Kindle
Metro – A music player for Android
VLC video and music player

Photo Gallery

Apple iOS

Apple Photos

Android OS

Simple Galerie Pro
Google Photos (requires Google Play services)

Budget Book

Apple iOS

My Budget Book Pro Edition

Android OS

My Budget Book


Apple iOS

iMessage (no recommendation, safety risk)
Session   (Messenger)
Threema (Messenger)

Android OS

Silence (SMS with end-to-end encryption!)
Session   (Messenger)
Threema (Messenger)

PIM (Contacts, Appointments, Tasks, Notes)

Apple iOS

CalenGoo (can also be used local w/o Google!)
Tutanota (E-Mail, Contacts, Calendar with E2EE)

Android OS

Simple Calendar Pro
Tutanota (E-Mail, Contacts, Calendar with E2EE)

System Functions, System Monitor

Apple iOS

Battery Charge Alarm
Do not disturb (System function, part of “Focus”)

Android OS

BatteryBot Pro
Do not disturb – Scheduled (System function)

Public Passenger Transport

Apple iOS

DB Navigator

Android OS


Weather Forecast

Apple iOS


Android OS


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