I am getting this warning when compiling: Failed to generate flattened icon stack for icon named ... Is it safe to ignore it? Is there a way to fix it? Thank you.

A new version of the Configuring your app to use alternate app icons sample code is available for download. The sample uses Icon Composer files and supports iOS 18 or later.

I am trying to validate my update for my app to be ready for iOS 26 with the new Icon Composer .icon file. Everywhere I read says that the old AppIcon in the assets folder wouldnt be used and to just drop the .icon file in the project navigator and link it properly. I do that and its still asking for a .png file; I add the 1024x1024 .png file and its still not working. I am very lost and dont know where to go from here I have both the .icon and .png app icons in there. My app deployment target is at iOS 26, Xcode Project format 16.3 (I dont see 26 so assuming 16.3 is the highest). I feel I have done all the things, and advice? Thanks in advance!

App Icon created with Icon Composer is empty for visionOS app We are developing a universal app, and the app’s icon was created using Icon Composer. Xcode 26, RC visionOS 26 and visionOS 2.5 App Icons on macOS, iOS, and iPadOS are correct We have archived the app for macOS and iOS and successfully uploaded it to the App Store. This strongly suggests that the App Icon configuration in our project settings is correct for these platforms. App Icon issue on visionOS However, the visionOS app icon is not working as expected: When testing on the Vision Pro simulator (versions 2.x and 26.0), the app icon appears empty. When archiving and submitting to the App Store, the process fails with the following error: The app’s Info.plist file is missing the CFBundleIcons.CFBundlePrimaryIcon key for the visionOS App Icon. This suggests that the project’s App Icon settings may not be correctly applied for visionOS builds. Request for assistance We are preparing to release our app, one of the first to support Liquid Glass, and would greatly appreciate guidance on how to resolve this issue with the visionOS app icon. FB20184218

If I use the new beta Icon Composer to make a .icon file for a macOS app, will it work for any macOS versions before 26? If not, can one build with both the .icon and the older asset collection icon?

This app icon features multiple layers with the blend mode set to Screen. iOS fails to render these despite looking perfectly fine in Icon Composer. This is unacceptable. How can a designer build an icon if they can't rely on it being displayed like the preview on a device? Filed as FB20052048 with the .icon file attached.

Hi Guys, I noticed that with Icon Composer when you export the icon it does not export a square image, is there any way of doing it or that's how it is now? Checking the icon on the iPhone something doesn't seem right...

I've filed a FB already through standard channels (FB ID: FB19032008) but I'll post it here in case it may get some attention from others experiencing similar issues. On macOS 26 Beta 5 and Xcode 26 Beta 5 (and earlier revisions afaik) Icon Composer specifies a minimum window size that greatly exceeds the bounds of the 1280x800/832pt video modes available on 13in MacBooks, and which also is too large for the default 1440x900 video mode on non-notched 13in MacBook Air/Pro models as this causes a default-size 64pt dock to occlude the window. I've attached screenshots depicting this behaviour in the two above described cases. Best solution seems like reducing min window size to something that will fit reasonably in a 1280x800pt viewport including the dock and menu bar (e.g. 1000x600 or something).

Just posted this feedback regarding macOS 26 "Tahoe" (FB19853155) - please support with additional submissions if you share my view. I will miss the beautiful and individual designed icons of the past! "macOS 26 is enforcing squicles for app icons, falling back to a grey background for 3rd party apps without a compliant AppIcon asset. As a result many original app icons are reduced in size and hard to distinguish because they share the same background color. Although I respect Apple's strive for an iOS-like UI on Macs, a smooth transition path would be more user- and developer-friendly ... e.g. with some info.plist property to opt-out icon migration, potentially ignored by a future macOS version. The current solution causes a bad usability, and makes the system look inconsistent as many - especially free - software will not be updated with new icon designs. Please reconsider this bad design decision!"

I’m having a bit of trouble uploading my new icon to the App Store Connect. I created it entirely with Icon Composer, but it keeps throwing an error saying it’s an “Invalid large app icon.” The error message says that the large app icon in the asset catalog can’t be transparent or have an alpha channel. I only have one AppIcon in the asset catalog, and I’ve checked the “single size” option, which is set to 1024x1024 for any, dark, or tinted size. In the past, when I used the previous icon with the iOS 18 SDK, I didn’t have any issues uploading it. However, when I created the new icon with Icon Composer and compiled it with Xcode Beta, it broke. I’m a bit confused because the error message suggests that removing transparency is the solution, but the whole point of Icon Composer is to make the icon transparent for the new liquid glass design. I don’t want to remove the cool look that my new transparent icon has. Could you please help me out? I’d really appreciate it. Thanks a bunch!

Hi, Is it possible to use the iOS26 Liquid Glass icon on iOS 26 (built with Icon Composer), and use the old icon on iOS18 devices? I imported the icon file into my Xcode project and it seems to use the new icon on iOS18 (and earlier) devices as well. Thanks.

Hi, I'm updating my iPhone app (iPhone only) to be ready with iOS 26. I'm building my app using Xcode 26.0 beta 6 (17A5305f) and testing it on an iPad running iPadOS 26 (23A5326a). I found an issue with my new app icon updated using Icon Composer and I was able to find the issue. An iPhone only app running on iPadOS 26 doesn't use the provided app icon. It always displays the "standard" light icon. I just added iPad in Supported Destinations and the app icon now respect light/dark/translucent/tinted modes on the Home Screen. I submitted feedback FB19768667

As of right now Icon Composer does not support creating app icons for visionOS and tvOS. It appears that only system apps can provide glass icons for those platforms. How should developers handle this? In extreme cases, the flat icon on those platforms will look wildly different from their glass counterparts. From what I have seen visionOS and tvOS also do not apply any automatic treatment like on iOS where legacy icons get a glass effect. So, third party app icons are just going to look out of place for (hopefully just) a year on those platforms? What is the recommended approach here? You could obviously fake the effect, but I feel like that would be worse.

After updating from iOS 18 to iOS 26, our app icon appears to have automatically received the new 'Liquid Glass' effect. We confirmed that this change occurred without us releasing a new app update. My questions are: Is this a system behavior where iOS 26 automatically applies the new icon style to existing apps? If so, is it possible for a developer to control or customize this effect? I am also wondering if there are any methods other than using Icon Composer.

Is there a way to display a .icon file in SwiftUI? I want to show the app icon in the app itself but exporting and including the app icon as a PNG feels redundant. This would consume a lot of unnecessary storage especially when including a lot of alternative app icons. There has to be a better way Otherwise I would file a feedback for that Thank you

I have been battling the new Icon Composer app for 2 days trying to build an app icon. However, I cannot get it to import any files. I have used the Apple provided App Icon Template. I have exported my layers to .svg and when I open the finder, everything is disabled. I can't find help for this anywhere. I am on Sequoia on my Mac and not sure how to design this app icon without access to the composer.

I'm trying to update the icon of my app for watchOS 26, and I'm having troubles providing both a layered Liquid Glass icon for watchOS 26 users and a pre-rendered bitmap icon (in various sizes) for watchOS 11 and older users. Whatever I do; I either get a blurry, scaled-down watchOS 26 icon on watchOS 11; or watchOS 11's bitmap icons on watchOS 26. While I could get the wanted result on macOS 26 and iOS 26, I simply can't get an equivalent result with watchOS 26.

Hi everyone 👋 I’m a new iOS developer working on my first app and I’ve run into a frustrating visual bug involving my app icon during the launch/close transition. Issue: When I use Icon Composer (the new tool introduced for iOS 26) to generate my app icon, I consistently see a thin white border or “fringe” around the icon only during the transition animation (when the app opens or closes). It disappears once the animation ends. What I tested and confirmed: • I exported the exact same design directly from Adobe Illustrator as a 1024×1024 PNG, fully opaque, RGB color mode, background color filling the entire canvas (no transparency, no borders, no rounded corners). • When I place that exported PNG directly into the AppIcon asset catalog in Xcode, the icon renders perfectly — no white fringe appears, just a slightly darker shade of blue during transitions (expected and acceptable). • But when I generate the icon using Icon Composer, the white edge always appears, even if I disable effects, use full coverage layers, or only keep a flat color layer. Notes: • Tested on iOS 26 (latest beta) using Xcode 16. • The issue seems specific to Icon Composer’s export format or metadata — maybe it’s not stripping alpha correctly or something related to the squircle mask? • I followed all recommended specs: 1024×1024 px, PNG, sRGB, no transparency, exported from Illustrator at 72ppi with solid background. Even tested without the logo, just the icon made with icon composer Is anyone else experiencing this issue with Icon Composer exports? Is there an official recommendation to avoid this during transitions or should I simply avoid Icon Composer for production icons for now and stick with Illustrator / Figma exports? Thanks so much Here’s a visual example:

How to add an app icon created in Icon Composer to an App Playground project?

I am running into an issue where when layers are grouped, the icon is not shown as it does within the preview in the Icon Composer app Is this a bug or is it some setting within the group/app?