Most payment processors will email you about a successful charge, eventually. Some batch it into a daily digest. None of them buzz your phone the second it happens.
Hookfire sits between your processor and your pocket: point its webhook at Hookfire, pick the events you care about, and every payment arrives as a push notification with the amount, the currency and the customer already in the title.
The one everybody wants. Amount and customer in the title, so you never open the app to find out how much.
A failed charge is a support ticket waiting to happen. Catching it the same hour is the difference between a save and a churn.
Refunds are the events you most want to know about before your customer emails you about them.
Chargebacks run on a clock. Losing a day to an unread email costs real money.
Each of these sends the events above. Setup is the same for all of them.