Hey there, let's tackle these two UWP packaging questions head-on—they're super common when prepping apps for the Microsoft Store, so great call asking!

Short answer: Not 100% identical, but your core feature set and user experience need to stay consistent across all packages.

Here's the breakdown: You absolutely can add device-specific optimizations or small, tailored features for a particular device family—like touch-friendly controls for mobile, controller support for Xbox, or spatial input tools for HoloLens. But the core purpose and key functionality of your app has to remain the same across every package.

For example: If your app is a note-taking tool, the desktop package can include keyboard shortcuts and multi-window support, the mobile package can offer quick voice-to-text for on-the-go use, and the HoloLens package can let users pin notes in spatial space. But all of them need to let users create, save, and sync notes. You can't have one package that's a note-taker and another that's a photo editor under the same app listing.

This rule exists for three key reasons, all focused on user trust and the Microsoft Store's unified app model:

• User Expectation: When a user finds your app in the Store, they're looking for one cohesive app that works on their device. If they download it on their PC and love the task-tracking feature, then grab it on their Xbox only to find that feature missing, they'll be frustrated and likely leave a negative review. Consistent functionality ensures users get the app they expected, no matter which device they're using.

• Unified App Identity: All your packages share the same Package Family Name (PFN)—this is how the Store recognizes them as part of the same app. If packages have wildly different features, it breaks the core app model: things like cloud sync, in-app purchases, and license management won't work as intended, since the Store assumes all packages are part of a single, integrated app.

• Simplified Updates & Support: When you push an update to your app, all packages need to roll out the same core changes. If features are inconsistent, you'll end up managing separate update paths for different packages—this is a nightmare for both you and your users (some might get critical bug fixes while others don't). Keeping functionality aligned makes updating smoother and ensures all users get the same level of support.

内容的提问来源于stack exchange，提问作者Muhammad Touseef