To check your purchase history, please read the following guides:
- Go to payments.google.com and log in using the Google account you wish.
- Tap on "Transactions" to see the purchase history in the Google Play Store.
- Choose one of the list's entries to see the invoice for that purchase.
- Open iTunes in your device.
- Select the username (your email address) and tap on "Account".
- Go to "Purchase history" and tap on "See all".