Nice apps I am using on my Fairphone 4

Just a list of apps I have found useful on my Fairphone 4. Nothing special. My general requirements for an app (apart from fitness-for-purpose, reliability) that I will use are:

  • Ad-free (I dislike ads)
  • Cost-free (with very few exceptions)
  • Open-source where possible
  • No registration requirements unless needed for functionality
  • ‘Honest’ - basically ‘does what it says’, no more, no less.

That said, here goes. All these are pretty much currently available as of March 2022. Most can be found on Google Play.

  • Element - a chat client that I ditched WhatsApp for. Not tied to any phone number, registration not required, just works worldwide providing you can get internet access
  • Protonmail - a paid-for email service offering encryption
  • BlueMail - I replaced Gmail with this. Not totally blown away by it but not too bad
  • Firefox - with add-ons installed (AdGuard Adblocker, Ghostery, Privacy Badger, HTTPS Everywhere, NoScript Security Suite, uBlock Origin)
  • Tor Browser - Private browsing
  • NordVPN - paid-for VPN
  • ColorNote notepad
  • Currency Converter (by AppCasa)
  • Cx File Explorer - a file explorer but with handing functionality for sharing images and files by various means
  • Droid48 - fantastic recreation of the HP48GX calculator
  • Exif Eraser - by a Japanese developer whose name I cannot read; very good, simple and lightweight, but no longer available on Google Play
  • Google Authenticator - a Google app I actually really like
  • PDF Viewer Plus - a simple alternative to the horrible, bloated Adobe Acrobat
  • Should I Answer - helps to filter out spam phone calls by checking numbers against a database
  • Moon Phase Widget - lunar appearance predictor by DPoisn LLC
  • Mute - Can mute all phone sounds with a button push, by MNO Company.

Why not recommend your own must-have apps? I’m still looking for a good weather app and several other things. Would love to learn what other people are using on their phones as I’m sure there are more gems out there.


Enjoy a look at this post


fennec instead of firefox
scrambled exif instead of exif eraser
aegis instead of goolag authenticator

all from f-droid store

there are also many FOSS weather apps


Or here also for the FP4

I changed the category from help to discuss

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Nice to share your list of apps :slight_smile: I have a few suggestions of apps you may want to try or know about:

First off, do you know about F-Droid? It’s an app store containing only Open Source apps :slight_smile:

I hear a lot of people rave about Aegis Authenticator instead, also because it makes it much easier to back up your data. May be worth trying as it’s an Open Source alternative :slight_smile:

I personally use Yet Another Call Blocker from F-Droid as it’s open source, but it needed a bit more tweaking of the notification settings to be useful for me (I found it “not loud enough”, as in, easy to miss the notification, with the default settings).

Well, if you’ll forgive the shameless self-promotion, I wrote my own Open Source app called Catima (short for Card and ticket manager) as an alternative to most loyalty card apps that sell your data. I am aware loyalty cards are tracking by themselves, which is why Catima allows you to share cards with other people to be able to still get your discounts while making it harder for companies to build an accurate profile on you.


Haha, Catima, that is cute! Looks like a nicely-done app!

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I go for FairEmail for email and Aegis Aegis Authenticator - Secure 2FA app for Android ( for OTP (instead of GAuth).

Best wishes,


I have successfully switched to Aegis Authenticator based on the recommendations here. It works well.


I had not used F-Droid until you mentioned it here, so thanks for that! Many useful apps there, although for some reason (some configuration I don’t have right?) there are no images displayed - just grey ‘droid’ icons where one might expect images of apps or whatever. But the functionality of the site works as expected.

It can take a while for them to load, it does seem a bit odd. You can try and refresh. :slight_smile:

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Yes, it’s been several days since I installed F-Droid and the icons have never shown up, despite the phone having been on high-bandwidth (WiFi) connections most of the time. There doesn’t seem to be any obvious reason for their absence…

I am always on VPN, maybe there is something about that it doesn’t like.

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I’ve started using Syncthing which is turning out to be very handy for keeping my Fairphone camera directory contents mirrored (one way, write only) to my Windows laptop. Risk of photo loss now very much reduced, and not reliant at all on ‘the cloud’.


aegis instead of goolag authenticator

I didn’t know this one and I am using andOTP which is a good FLOSS alternative to authenticator.

@FPWulf, You have a nice list and I think that what @FairphoneHulk wanted to say is that if you prefer open source software you should go for the replacements he recomands.


This is a nice service but I am not using it on my phone because it doesn’t allow standard IMAP afaik. Instead I use other crypted email services that are usable with a normal Mail User Agent. (Mailfence, Posteo or Disroot to name a few). The mail user agent I use is K9 Mail.

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I can’t see that anyone has responded to your query about weather apps. My favourite is the one from the Norweigian Meteorological Institute - called Yr. I started using it on a trip to Iceland, but it actually works pretty well everywhere and seems pretty accurate (I also have the UK Met Office and BBC as well as Weawow and Meteoblue - always worth checking several as they do often give slightly different forecasts). To check cloud cover try Clear Outside (used by astronomers).


correct. that’s a big dissapointment

For weather I recommend the Met Office app.

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and why do you recommend?

I find it reliable and user-friendly, without too many distracting pop-ups.

2 good sources for open source apps from trusted devs are: