Obtainium is one that I have been using for over a week now. It keeps all my FOSS apps up to date. I have 30 apps added now, and 80% of them are now updated directly from their github page!
The easiest way is to look at your Installed apps through F-Droid as it will show both apps installed through F-Droid and apps from the Play Store that are available through F-Droid. You can copy-paste each source link into Obtainium.
I use Obtanium to keep Liftoff and Thunder up to date, since the updates come faster than they do from the Play Store :) Very easy to set up...even if you originally installed from the Play Store, you can still use Obtanium to update going forward.
I'd love for wefwef to have a Material Design theme automatically applied when using an Android phone, but other than that it's right now the perfect Lemmy app and it's extremely fast when you install it with Chrome!
I want to use wefwef but I just can't get past the fact that it looks like a single page app designed exclusively for iOS. I think it's the permanent back button which you basically never see on Android because it has a dedicated back button/action.
K-9 Mail, soon to be Thunderbird (Play Store / F-Droid / GitHub) - No-nonsense e-mail client
NewPipe (F-Droid / GitHub) - YouTube client for privacy, has no ads, supports background playing, local subscription lists, and ability to download videos
Techmino (GitHub) - FOSS Tetris clone with no ads and multiple modes, definitely my favourite
Waistline (F-Droid / GitHub) - Calorie counter app that stores all data locally. Need to add products yourself but have full control.
K-9 Mail and Thunderbird ended up partnering about a year ago at this point, and they're planning to turn K-9 Mail into Thunderbird on Android (and also iOS and macOS).
Antennapod is a Free Open Source Software (FOSS) podcast app. The app is well designed with great features. You can also use it for playing audio books locally as well.
I quite like it, my only complaint is that the Android auto support is not great. It seems to lose track of what podcast I'm playing s lot of the time. The customization and queueing features are great though.
Yes that definitely used to be an issue. But I haven't quite experienced/noticed that lately (maybe since they revamped the new home tab?)... If it's been a while, maybe give it another shot.
With all the social media corps going full ham on advertising, I'm going to make the switch from Chrome to Firefox with ad-blocking add-ons. However, I'm at a crossroads since there are many variations ranging from the official Firefox app to Firefox Nightly and even Fennec or Fenix.
If you are trying to switch from Chrome, then just use regular Firefox with the ublock extension (and maybe some of the other privacy extension officially supported). If you are a "power user" and want modify/access about:config and other settings then you need Firefox Nightly. The Fennec and Fenix (iirc) are just stripped down Firefox that either only have private mode or additional settings for privacy (that are already present in regular version, but way not be enabled by default). Hope that helps.
Just get the regular Firefox with uBlock Origin if all you're concerned about are advertisements. The default settings out of the box are fine for most users.
Get the Mull browser if you're concerned about privacy as well, as this is a hardened Firefox similar to LibreWolf. Not sure if this is on the Play Store, but it's definitely on F-Droid.
Before jumping ship from Chrome completely try Vivaldi, it's built on the Chrome engine (so you can continue using your extensions and what nots) but it's made by one of the guys that created Opera but jumped ship before it got sold off to big money.
So like old Opera there's a huge emphasis on not only pushing what a browser can do (Opera pioneered speed dial for instance and tabs too iirc) but privacy and security as well.
I've been using it for a while now with Firefox really not being able to scratch the itch left by Opera and I'm really impressed with just how good it is for being built on Chrome.
I use Fennec it disables telemetry and updates pretty quickly from Firefox upstream releases. Also supports custom sync server and add-ons collection without having to run nightly builds.
I liked IceRaven, but it's not regularly updated anymore. I would go with Firefox Nightly, since that lets you install any extension you want (through an arduous process), where regular Firefox only lets you install add-ons on Mozilla's approved whitelist.
I use Kiwi browser, which is a Chromium based browser with extension support! I currently have uBlock Origin, Privacy Badger, Sponsorblock, Bypass Paywalls installed.
Musicolet is my favorite local music player because of the ability to switch between queues without losing the position of the last played track. I don't understand how not all music player have the same feature
For self hosted music lovers, I would like to introduce you to Tempo, an open source and lightweight music client for Subsonic, designed and built natively for Android.
I'm waiting for more comprehensive offline support, but it does look promising. DSub and Ultrasonic are other good FOSS subsonic clients (although DSub isn't being actively developed).
EDIT: Actually looks like there has been some recent activity with DSub, which is great to see.
Connect is working really well for me, but I prefer jerboa. Unfortunately that isn't working right now with lemmy. World being on an older version. Once they go to 18.1, I should be able to use it again.
There are a lot of options for Lemmy, but beware they still need to mature a bit. The two apps I keep using the most are Thunder and Connect for Lemmy. Lots of users swear by Liftoff but I find the aesthetics a bit lacking for me. There's also Lemming which is the most barebones but has a great UI for something that has only had a couple of alpha releases. Most if not all of these are available to download from Github.
All the apps I have tried so far have been great. Liftfof however is on a class of it's own. A unique feature it has is the ability to combined feet from different accounts on different instances.
Fdroid -> StreetComplete very easy contributing to osmMaps. You know your neighbourhood? Answer questions if that trafic lights have sound indication for blind people or about the type of surface that bike line has.
I checked right now and I'm logged in and I think it's necessary to contribute. But it's a simple form to register and you should try. It's pretty addictive to answer questions about your surroundings :)
Moshidon is a fantastic Mastodon Client.
Kotatsu is my personal favorite Manga reader on Android.
Image Toolbox is a great choice for an open source mobile image editor with a good amount of features.
I'm looking for a Mastodon app. The official app and website really sucks for viewing threads. I prefer the comments to be nested like on Lemmy, but the official one stacks them all. Are there any recommendations?
Edit: It still stacks all comments like the official one. Maybe I'm too used to the Reddit/Lemmy comment nesting style. That's the gold bar for me, but at least something like what Twitter has would be better.