https://ios.gadgethacks.com/how-to/missing-app-stores-wish-list-is-best-alternative-for-ios-11-0184871/
Apple removed the Wish List feature from the App Store when iOS 11 was released, which was a huge disappointment, to say the least. While the Wish List still remains in the iTunes Store, it seems gone for good for apps, but that doesn't mean you can't still keep a wish list of interesting apps and games to buy later — using software already on your iPhone.
Turns out, Apple's own Notes app is an excellent place to house all of the paid apps and games you want to purchase in the future. But don't rush over to the app just yet — while you can copy and paste your app links into a note, there's an easier, faster, and more native way to go about it, one that will almost make up for Wish List's abrupt departure.
To begin, find an app on the App Store that interests you. Unlike Apple's old Wish List feature, you can even choose free apps and games that you want to install later whenever you're connected to Wi-Fi or have more space on your iPhone (or for whatever other reason you have to not download immediately).
Tap the white ellipsis (•••) in the blue bubble to the right of the app's "Get" or price button, then tap "Share App" in the following popup. The standard share sheet will appear, allowing you to tap "Add to Notes."
Once to tap "Add to Notes," a window will appear, showing you a preview of the link you are about to add. As you can see, the link takes a stylish form, housed inside a rounded box whose color scheme matches the app.
You choose to add the link by itself, but you can also add text. If you're adding this link to a new note, the text you add will become the name of that note ("Wish List," "App Wish List," and "Game Wish List" are all good choices). If it doesn't say "New Note" next to Choose Note, then you can tap whatever note's name is there, then select "Create new note" (or pick the folder first, then "Create new note").
When finished creating your new wish list note, tap "Save," and you've officially started your first App Store wish list in your Notes app.
If you add another app or game using this method, your last used note should appear besides Choose Note, allowing you to quickly add the app to your new wish list with or without additional text notes. However, if the note doesn't appear, you can quickly switch to it by tapping "Choose Note" and selecting it.
Once you've added all the apps you have in mind, you can head over to your Notes app to check out your new Wish List replacement. Your apps will be organized in the order they were added, but you can rearrange the list as you see fit. Tap any app to launch into its corresponding page in the App Store.
While Notes is arguably the best substitute for the now-defunct Wish List, there are alternatives for sorting your database of desired apps. Check them out below.