I used to think the same for WhatsApp, Spotify, Twitter and Apollo but they can all be replaced by alternatives (Telegram / Signal, Amazon Music, Mastodon, Memmy).
I know about Keepass but it’s definitely not as convenient and easy to use as Bitwarden.
I don’t use YouTube app because of ads everywhere but I would have trouble stop using YouTube on my computer.
#1 would be the phone app, pretty handy for calling people in real time. Without it I would have to carry a phone separately, It's become pretty hard finding a phone booth today.
#2 Would be SMS, these are quite handy for quick messages without interrupting something important.
#3 GPS maps, I have the most amazing sense of orientation, that basically guarantees I never end up where I’m supposed to, unless I have GPS.
You may take these functions for granted children. But back in the day, maps were something you had in the glove compartment of your car. Phones were something you had on the wall, with a long wire hanging out of them, to connect you to a wired network. Messages was something you send on paper, put a stamp on, and posted through the postal service.
Of course compared to back then, a smartphone has plenty more clever functions. Like the calculator, which we did either in the head or more complex calculations were done on paper.
But I guess these aren’t what you kids were looking for. But they are actually quite amazing, even if you take them for granted. ;)
To me it's still Nova. Ever since they were bought out I've been trying to find a replacement but nothing seems to match it feature for feature. Especially on Samsung or LG phones, I'm using Nova constantly.
I just developed a muscle memory to be able to swipe down or up on any app to trigger a specific task. It allows me to really keep my home screen clean.
I've turned off automatic updates to try to limit branches intrusiveness but I'm eventually going to have to move on.
After that kiwi browser or Firefox Nightly. I need at least one of those. Those are the only browsers that allowed desktop extensions.
I guess I would choose with Firefox Nightly as it gets updated much more frequently and isn't chromium.
If it weren't for Spotify and Strava for bike rides, I would gladly get rid of my smartphone and replace it with a flip phone. Life was better before the entire internet traveled with you everywhere you go.
Evernote (functional note-taking app), ReVanced (Youtube ads are a blight on civilization), My Boy! (Fire Emblem GBA series are my comfort games which get me through my bus commute. I would buy them on actual hardware if Nintendo didn't make it such an obtuse PITA with limited-time subscriptions to induce artificial scarcity.)
Bitwarden - used for all my passwords and 2FA
WhatsApp - wish I could replace with Signal but network effects too wide
Twitter - I'm too addicted. This used to be Flamingo (RIP)
The last spot could've been between Flamingo and Reddit Sync, sad times.
Tasks - My life would be a mess without this or something very similar.
Firefox - Ad blocking, dark mode, bookmarks etc. synced to my laptop.
My bank app.
If you asked me month ago I'd say Relay for reddit but here we are. Today I'll go with Youtube Revanced, without it yt experience is severely lessened.
EDIT: Oh three apps. Firefox and Power Amp
Google Notes: Hosted Obsidian is AMAZING! You can self host for free, but I recommend supporting them.
1Password: I use Bitwarden (personal) and Keeper (work). Both, in my opinion, much better than 1Pass.
WhatsApp: this one is hard, as it has to do with your contacts. I'm in the same boat here. I use Signal for most friends, but my foreign friends use WhatsApp, which means that I do too.
KeePassDX - I've migrated all my passwords to KeePass and use tasker to automatically backup to google drive. I have a nextcloud automatic backup configured too. I used to have Aegis but KeePassDX can take care of that too
Kiss Launcher - My first install!
Poweramp for audio, I still prefer local audio than streaming. I use Youtube Music or Spotify to discover new ones.