To review your purchase history, please check the guides below:
ANDROID
1. Enter pay.google.com, then log in with your desired Google account
2. Select “Subscriptions and services”
3. Select "View purchases".
For more help with this, please see here.
iOS
1. Open iTunes on your computer.
2. Select your username (this should be your e-mail address), and choose “Account”
3. Scroll down to “Purchase History”, and choose “See All”