Google is somehow the only company that is able to completely ruin a calculator app. Even before installing, Google outs themselves with how much data they collect:
App info and performance: Crash logs and Diagnostics
Personal info: Email address
Device or other IDs
App activity: App interactions
And of course the encouraging message:
Data can’t be deleted
The developer doesn’t provide a way for you to request that your data be deleted
As soon as you try to install it, the app requests network access. I'm glad to be using GrapheneOS where this can be restricted.
The app doesn't crash on launch, which is a new concept for Google, since most of their apps won't even start without Google Play Services installed. Maybe that means the calculator app can calculate 1+1 without requiring installing the most invasive software known to man, right?
Of course it can't. It crashes the moment you press the plus sign. Thank you, Google, for requiring Google Play Services for your calculator app to do basic addition. You know what calculator doesn't require Google Play services to do math?
In all seriousness, OpenCalc is a near 1:1 match to Google Calculator, so I suggest anyone use that instead.
The cherry on top is Google's calculator app is bundled with a privacy policy, which on its own is a treat to read through: https://policies.google.com/privacy
Funnily enough, calculator is one of the few proprietary apps I've paid for and still happily lose. Wolfram alpha just does many things that other calculators don't.
The last time I wanted to do something for privacy, someone laughed at me saying "They don't want to make a google mail because google spies on us". Eh I wish you could read all this shit but you're old and you don't care about privacy ig
I've been looking for a calculator app for years now that fits what I need I need it for and have yet to find a good one. There was a good one a few years ago called function-something which allowed you to create your own mathematic expressions and it was super awesome, but it's been discontinued... :(
EDIT: To those asking, I've essentially tried the first 50 that show up under "calculator" in Google Play. If you posted it, I've very likely tried it and found it lacking.
rofi-calc is awesome. It's so convenient to just press a keyboard shortcut you have defined and instantly being able to type or paste your equation, no having to wait for a complicated GUI to load, no clicking required. You can just pop it in whenever you need. Also it does unit conversions, instead of a math equation you can just type 10 inches to cm or 10 eur to usd or 100 celsius to fahrenheit or 100 to binary which is a huge time saver.
Yeah I should have mentioned it, the day I stumbled on rofi-calc and learned that it could deal with natural language thanks to qalculate I was floored ! I don't know who came up with the idea by hat off to them
I've personally found the behavior of 'clear', spacing of buttons, and lack of customization capable of fixing those to be rather annoying. They're the same complaints I have with Fossify's calculator app. I'm currently using OpenCalc since they don't have those issues.
I use this one. It isn't FOSS, but it's a one-time purchase to remove ads. It has a lot of added features, like algebra and unit conversions, and requires no permissions.
Graphene is basically android too. If you install lineage without gapps for example, I think you'll have great privacy. About the second, I don't know..
Desmos scientific calculator isn't open source but it is what I end up using most of the time. It just does float stuff though, it can't handle something like (10100+1)-10100
It also doesn't support nearly as many features as the graphing calculator does, for some reason. But it formats everything very nicely and you can copy and paste as latex