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Why can't I see my purchase history on App Store?
How far back does App Store purchase history go?
Most people will probably know you can view your purchase history from the App Store app but this just tells you when you downloaded it and gives you the chance to download it again.
If you want to see how much you paid for it as well as the rating and review you might have given it then this information is also available but deep inside a rather unusual location - the Apple Music app.
In Apple Music go to For You and click your account photo top right. Scroll to the bottom and click View Apple ID then click Purchase History.
You can also have any receipt resent to you from here.
The purchases made against Apple Store don’t show any details regarding the charge. Whether it is for recurring iCloud extra storage space, or an iPhone purchase at a store…
How can I differentiate Apple Store charges?
This is now possible since iOS 4.3.3 by going into the iPhone App Store > Updates > Purchased. It provides a list of your iPhone app purchases and allows redownloading from the iCloud.
Also you can visit reportaproblem.apple.com and all recent purchases will be shown.
I don't think there is a way to view just iPhone App purchases. You can view your whole iTunes purchase history. You can see your iPhone app purchases there.
Open iTunes -> Store menu -> View My Account -> Sign in -> Go to Purchase History
Update: This seem to include all your purchases using your Apple ID (iOS App Store, Mac App Store, and iTunes Store)