Tasker. Basically an interface for writing scripts for your phone. Even if you don't have a use case in the beginning you'll start finding things to do with it.
I used it to identify the cell towers near my home and turn wifi off when I was out of their range and back on when I was in range. It seemed to help save battery by not constantly looking for wifi networks and I didn't have to remember to turn it off and on manually.
I used tasker to display an icon on my status bar to tell me whether auto rotate is enabled or not. I kept lying down on my side forgetting that I had auto rotate on and my display would rotate when I didn't want it to.
It's an incredibly specific and minor thing that was annoying me, but tasker let me fix it. It's a great tool, but can be complicated if you aren't familiar with scripting. Luckily it's got some presets and a "basic" mode.
There's a completely free app (no ads, either) that prevents auto-rotate from actually happening unless you want it to. It pops up an icon when your phone wants to rotate, and it you don't tap it within the timeout (adjustable up to 3 seconds) then the icon goes away and the rotation never happens. It's highly customizable, and I just can't live without it since I found it.
I created a trigger to disable auto-rotate when I'm using the apps I'm usually browsing while in bed (i.e. doom scrolling social media) but I like your idea.
The main thing is a script to stop any media playing and turn off the screen after x minutes, so I can fall asleep watching YouTube or listening to something. There's probably already an app for that but this is pretty customizable.
Another stupid use is putting the phone on silent while using the camera app because Samsung won't let you turn off the camera shutter sound.
I've got some that pulls the picture from Bing and the picture from NASA and set them to my wall paper and lock screen back grounds.
I've got another one that silences my phone when I'm at work or church and not connected to my car blue tooth. I used something similar in college to silence my phone when a calendar event was happening. My phone never made a peep during a lecture! It resets volumes to normal levels after the silent period is done.
I got it yesterday, it's bloody solid. Did tend to demolish my battery a bit, but that night just have been because time was dissolving before by very eyes. If you commute or have to burn time a lot (I spent a lot of time in hospital waiting rooms recently) then it's amazing m no microtransactions either
It is one of the best games I've played this year. Really easy to get into for short bits, I pirated it first, played for a few hours on PC, bought it, played it for a few dozen more, and happily bought it for my phone.
It's just a really great alarm clock app, but with tons of other sleep tracking functionality. I've always had trouble sleeping through my alarms, but I never do with this.
If you run Home Assistant, Sleep as Android can publish events to an MQTT broker so you can create automations based on those events, like "smart_period", "awake", "not_awake", "alarm_alert_smart", etc.
I find recipes online, download them to the app stripped of all the online recipe bloat. It sorts all the information automatically, including notes and nutritional info. I can check off ingredients and highlight directions, edit tags, compile menus, add my own notes and write my own recipes, it automatically provides a grocery checklist, has a serving calculator to adjust amounts for whole recipes, built in timers, and that's just the basics off the top of my head.
It's free up to a certain amount of storage but I think all the features are available.
I'm not the person you replied to, but it's great for telling you why the check engine light is on. If you're somewhere that requires emission testing: you can diagnose if you have an exhaust leak, bad O2 sensor, clogged catalytic converter, etc. Besides that: its good just to know if the check engine light can be safely ignored.
To oversimplify, your car maintains a list of faults, and if that list isn't empty, it'll turn on the check engine light. An obd2 code reader let's you see those codes. I can vouch that these Bluetooth readers + torque are the cheapest way to get these codes without going to a parts store. Even if you have no intention of doing your own work on your car, it's good to have an idea what the problem is so your mechanic doesn't rip you off.
They generally only return obd2 codes though, which are required by law for emissions. Many automakers keep extra, proprietary codes that require expensive, proprietary tools to read.
It was the first (only?) app where I was baffled at the features compared to the price. It's a joy to use. If you self-host music, it beats the competition by miles
I wish sonos had better interoperability, but I did discover if you make a group of speakers and then cast to the "primary" speaker with symfonium, it broadcasts to the whole group.
Was my only issue with it, but that's 100% a "sonos is shit" problem, not the app.
I love Simple Audiobook Player+. The UI is super minimal (and really maxes out the whole OLED black thing if you choose it) without compromising on features that are kind of essential for audiobooks (e.g. delayed pause/sleep timers, speed settings, volume boosting, an EQ). My favorite thing is the "undo seek" button. I'm an oaf who is constantly inputting accidental touches. When I was using Audible, I'd have to manually find where I was after accidentally hitting the next chapter button or moving the dot on the progress bar. SABP lets me just undo that shit.
It hasn't been updated in a while, but it doesn't need updating when it does its job so well. There are no ads, no marketing notifications, just books. It's like a program from coreutils in app form. It might be a bit ugly or outdated looking, but I'm about that.
Smart audiobook player is great, but I do wish we had an open source alternative. The audiobookshelf app is almost there, but it still requires a self-hosted server I believe.
Read Era is technically free, but I paid for premium years ago and have never regretted it. I can open any kind of uncorrupted book file, from the Amazon reader format to PDF to epub, and everything else I've ever come across. It has a great search function, and the ability to file a book into a custom 'Collection'. You can edit the details of a book, like adding Author or pusblisher info, add your own personal notes to a page or highlighted quote, see an aggregate of all your highlights in a particular file, and adjust the font, background color, and contrast to your hearts content.
I make my whole family use it now, cause I love it so much and Premium works on Family share.
just scrolling trough my phone, here's some I like
app opps - lets you change permissions for apps, handy if you want to have multiple things playing audio or use google photos without it scanning your phone.
calcu - it's a calculator!
simple draw - exactly what it says on the tin
es file explorer pro - versatile, but not bloated
moon+ reader pro - a handy reader for all sorts of docs, including search etc
polarr - a photo editing app with features not a lot of apps have. The devs are pushing some dumb filters tho
handy photo - same as polarr
mx player pro - got videos to play?
poweramp - a music player
poweramp equalizer - is what it says on the tin
sd maid pro - for clearing out old files and such
poweraudio plus - used to be the only app with a parametric equalizer. Now poweramp does too
ultrachron - just a nice timer/stopwatch
unified remote - a remote control app, be careful tho, I doubt this thing is secure
web video caster - also downloads videos from plenty of places
and a couple more apps, where the developer has decided to pull the lifetime license and move to a subscription, even after I had bought it
So I've used Moon reader pro for several years and love it, but I cannot get reading states to sync between my Samsung phone and Samsung tablet. The book files are named exactly the same on both. I've tried syncing using Google Drive and Dropbox. It treats the books as two separate reading states, though I see the metadata/reading states file edited in Google Drive upon reading for a bit. Any suggestions?
Just to mention another file explorer, Solid Explorer is great especially becase it's easy to access Google Drive without having to use the Google drive interface.
I've been using FX File Explorer since 2012. It's straight up the best file manager on Android, especially when you use SMB and SFTP. Multi window makes moving things around easy as, and the built in text editor works a treat. Being able to share images from apps to FX's "Save As" option is awesome to. It means every app can save where you want.
No idea why it isn't more popular compared to the alternatives.
FX is one of the only 2 apps I ever paid for and it's great. I needed something to access SMB shares and it has always worked wonderfully. It's good for poking around in the file system on the phone too. There may be better stuff out since I bought it years ago but I've never had a reason to check.
HiPER Calc Pro. A great scientific calculator I use constantly. (There is also a unpaid, ad-supported version, and the ads weren't too intrusive the last time I tried it)
Cryptomator is a fantastic way to securely upload your stuff to cloud storage providers like Google Drive, OneDrive, etc. In my case, I use it to have an encrypted blob of my stuff with me on a drive when I'm out and about.
They also give you the ability to purchase a license independent of Google Play if you didn't want Google to get a cut.
A file explorer allowing for me to transfer files over the network. When Solid Explorer suddenly didn't seem to want to do network transfers anymore (likely because Windows updated something), I waited for that app to update to fix the issue. It never did. I found that MiXplorer was a good alternative that transfers files over the network just fine and works nice and fast as well. The interface takes a bit to get used to (meaning it isn't the same as Solid Explorer) but the app is certainly worth using. Importantly, I can transfer files over the network without issue again.
Notably, this app is free to download (from XDA) however the Google Play version is not free. The Google Play version (which supports development) is a one time paid fee.
I love it but I can feel it getting neglected with each Android update.
The worst for me was transferring a video to a computer using the FX Web feature and discovering it silently truncated the video..... when it was already too late.....
Also bought Nova Launcher Prime, but they were apparently acquired in the last year so now Nova is spyware? Anyway, I switched over to Kvaesitso and couldn't be happier.
nova prime + netguard to keep it off the internet has kept me using it. "search focused" launchers are not how I use my phone and nothing else has all the features nova does without being able to just dump the stupid home screen search bar.
Edit: gave it a try, but you have to remember the exact name of every app, and i dont care enough to remember if the name is 'store' or 'market' or 'app store' for example
CamScanner (intuitive and powerful scanner app that processes images exceptionally well and interfaces cleanly with all sorts of other apps) and Hiper Calc Pro (scientific calculator that shows you your input and looks like a classic calculator interface)
That's great! It's not super helpful for me, though, since I teach students that often aren't good at troubleshooting technology issues on their own so I need an app that's pretty universal and user-friendly. Plus, the question specifically asked about stuff in the Android play store...
Tasks.org is a wonderful open-source todo/task app, that has a low-cost monthly subscription to use it's syncing ability. It's worth it to support FOSS wherever we can.
Worth noting that it also has a bunch of free alternatives for sync, some self-hostable, and you were talking about the paid service hosted by the Tasks.org devs.