38 votes
Accepted

Do iOS apps run in the background?

Apple has very strict guidelines for how—and when—apps can run in the background. The following are the only scenarios in which a third-party iOS app can use CPU in the background. Background Fetch ...
owlswipe's user avatar
  • 5,922
29 votes

Did the Macintosh OS in 1997 really not have multitasking?

There are several ways to implement multitasking: cooperative, where processes voluntarily yield control periodically or when idle or logically blocked. This type of multitasking is called ...
nohillside's user avatar
  • 101k
23 votes

What did iOS do before multitasking?

FWIW, Apple has always allowed some of their own apps or services to persist in the background, i.e. the Phone, Mail, push notifications, Find My iPhone, and so on, based on the need and functionality....
Bryan Scott's user avatar
  • 1,345
15 votes
Accepted

What did iOS do before multitasking?

The app switcher came with limited multitasking. Before that, you pressed the home button and the front program stopped running.
bmike's user avatar
  • 236k
13 votes

Did the Macintosh OS in 1997 really not have multitasking?

Could Macs in 1997 really only run one program at once? I vividly remember running multiple programs at once in Windows 3.1. Well, yes and no. To truly run several programs at once, you need parallel ...
jaume's user avatar
  • 15k
9 votes
Accepted

How can I keep an app open in the background?

Apps are paused when backgrounded and resume when opened. If an app does not correctly resume to the state it was left in, this is something only the developer can fix. It's not possible to run an ...
grg's user avatar
  • 201k
8 votes
Accepted

Does Background App Refresh affect notifications?

Background App Refresh allows apps to download information in the background under certain conditions. Apple says: After you switch to a different app, some apps run for a short period of time ...
tubedogg's user avatar
  • 15.2k
8 votes

How can I force Chrome to open links with specific profile?

With the current version of Chrome (51.0.2704.106 (64-bit)) you can just right-click an url and then open it with the fourth menu choice from top: "Open Link as PROFILE" (your configured ...
Alessandro Trinca Tornidor's user avatar
7 votes

What did iOS do before multitasking?

Initially, iOS did not have multitasking. Their first attempt was in 2010 (holy crap!). The iPhone just didn't have enough ram and wasn't optimized for it. In 2010, Apple enabled the core apps to ...
megamaiku's user avatar
  • 201
7 votes
Accepted

Do programs keep running on macos when user switches account?

Yes, the applications will continue to run in the background. This happens with Fast User Switching and when Locking then logging in. Monitoring You can see the other users' applications are running ...
Graham Miln's user avatar
  • 43.8k
6 votes

ionice equivalent for MacOS?

On macOS you'll find a similar program named taskpolicy that comes with the system. It allows you to both start a new program with a specific I/O scheduling policy, as well as change the I/O ...
jksoegaard's user avatar
  • 77.9k
5 votes

IOS: How to “unsnap” a slide over app

The OP is talking about an old iPad so mentioning “split screen” will not be available. Something like the mini 2 which is what I have and I have the same issue. Start Safari as normal so this is ...
Stefan's user avatar
  • 51
5 votes

Open applications in the background in OS X, I don't want my focus taken from me. Respect my Focus!

To launch an app in Finder in the background (hidden) you can use a simple Automator service. Open Automator app, select a service that accepts files or folders in Finder and add a Run Shell Script ...
boris42's user avatar
  • 1,451
5 votes
Accepted

how to prevent numerous background daemons from harming gaming FPS (or other intense foreground workload performance)?

The answer to this is that it was a missing feature in macOS, and in macOS Sonoma now has Game Mode, which will have no configuration, but the OS should detect full-screen games and prioritize them.
Glyph's user avatar
  • 1,562
4 votes
Accepted

Apps not working properly in background

Apps shown as "open" but that are not the foreground app are in the Suspended state (described below), with a couple of exceptions. So the apps you are seeing in the app switcher are ...
tubedogg's user avatar
  • 15.2k
4 votes
Accepted

Did the latest iOS or Zoom update break screen sharing when in split-screen mode?

This is related to iPadOS 14 and all apps that screen share will need to update and use a new SDK/API or Apple needs to ship a new update for one app to broadcast the content of another sandboxed app. ...
bmike's user avatar
  • 236k
4 votes

How do I move a maximized window from one monitor to another?

Are both displays the same resolution? [Not the same physical size, that's not important.] Are you confusing 'maximised' with 'fullscreen'? You can move any window, maximised or not, by dragging the ...
Tetsujin's user avatar
  • 116k
4 votes

Allow in the Background Unrecognized Entry

I have seen references in post-Ventura updates to software that uses Application and Helper tools not having them registered using the proper application names, but using the developer name instead. ...
Andy Griffiths's user avatar
4 votes
Accepted

How do I kill the running app when I can't swipe upwards

If you have Siri enabled, you should be able to tell it to “Turn on VoiceControl” and then once that’s enabled, use your voice to tell your phone to “Open App Switcher” (voice control will always be ...
RyDev's user avatar
  • 413
4 votes
Accepted

What is the "open" UNIX script for and why is it unidentified?

It's not a "UNIX script". It's a regular program, it comes with the standard macOS installation "from factory". Its purpose is simply to "open" up files and folders for ...
jksoegaard's user avatar
  • 77.9k
3 votes
Accepted

Can closed (not running) apps access background app refresh?

Do not confuse Suspended with Not Running. Suspended means the app is still in memory but otherwise not utilizing any resources. Not Running means the app is not in memory at all due to being ...
tubedogg's user avatar
  • 15.2k
3 votes
Accepted

IOS: How to “unsnap” a slide over app

The solution that seem to be working is actually to go to the home screen and open the app from there.
firedev's user avatar
  • 764
3 votes

Possibilities when not using background app refresh

With background refresh an app more or less lets iOS take care of data refresh. If this is turned off it‘s up to the application on how data gets refreshed (on activation, on user demand etc). There ...
nohillside's user avatar
  • 101k
3 votes

Do programs keep running on macos when user switches account?

While they will all continue to run, they may not keep doing the same thing.  For example, if iTunes is playing a song, it will pause when you switch users.  I haven't tried it with the new "Music" ...
WGroleau's user avatar
  • 4,937
3 votes
Accepted

How to secure Mac laptop while it is running processes such as wget, or some local node.js apps?

The "Lock Screen" feature is your friend: all of your processes will continue to run, but your password will be needed to access anything. Command+Control+Q if you need to dash off quickly.
TJ Luoma's user avatar
  • 20.7k
3 votes

Which background apps restart when you reboot iPhone?

I think the reason you're having a hard time finding a definitive answer is that the concept of a "running" app is different here than many expect. A non-technical user might have one idea ...
jksoegaard's user avatar
  • 77.9k
3 votes
Accepted

How can I switch among apps with Cmd/whatever + number keys, as on Unix desktop environments?

Karabiner-Elements can be used to run an open shell command. It'll open it if the application is closed, and focus if it's already open. If you create cmd-numbers.json in ~/.config/karabiner/assets/...
mooncoder's user avatar
3 votes
Accepted

How to determine details of backgound process?

I wrote a small helper script that parses sfltool output with awk and formats it in a digestible way. This may help you determine what those specific background apps are. More details at the GitHub ...
luckman212's user avatar
  • 2,950
2 votes

How can I keep an app open in the background?

If you're on iOS 9.0 - 9.1, you can jailbreak with PanGu. You can then install a tweak called Dissident in Cydia that enables backgrounding with different behaviors per-application.
Andrew Larsson's user avatar

Only top scored, non community-wiki answers of a minimum length are eligible