[kevingadd]

One of the most annoying things is to try and launch your camera on a phone and have to wait multiple seconds before you can hit the shutter, at which point the thing you want to photograph might already be gone. So I can definitely understand the logic behind this, even if it's creepy.

IIRC, Apple has invested specifically in reducing startup latency for the camera, but I don't know if that applies to apps.

[can16358p]

From what I can tell the startup time is more or less the same for both the built in camera app and the third party apps. IIRC built in camera used to start a bit faster in the past but that's not an issue anymore. The problem is that we launch the camera app and because the icon animates from home screen to fill the device window the latency is less noticeable, but for example in Instagram, the app is already open in full screen so starting the camera from a user action, even though it takes the same time with launching the camera app, is more noticeable from a user perspective.