How to optimize iOS app startup speed?

Unity Engine
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1

I just upgraded my Unity license to Plus, so I can get rid of that Unity splash screen and speed up the app startup time, which is currently 5 seconds. Unfortunately, even without the splash screen, Unity takes that long to initialize, although my scene is pretty simple (we are mainly using AR with not much 3D content).

So I am wondering if there are other strategies to speed up things? Our users complain about the long startup time, for our use-case it is vital that the app is available as soon as possible.

2

Some things you can try:

  1. If you have texture heavy scene, decrease texture size and/or compress textures
  2. Add additional simple loading scene
3

Have an almost empty opening scene (perhaps just an image) to load faster, then quickly move to your original first scene.

4

Thanks for your responses, highly appreciated. What is the “minimal startup time” that could be achieved / you had already achieved, just to set my expectations right? That would be interesting to know.

5

It varies between devices. Cold start for our 2D game with about 100 megabytes of compressed textures takes about 3.4 seconds with iPhone 7 plus.

6

Thanks!