PIX POX - Chaves Cobranças is a free Android application developed by Grupo Plus that helps users manage their PIX keys. It is especially useful for those who work with multiple keys from different banks. The app has several features, including the ability to manage and register multiple PIX keys from different banks in one place, generic QR code generation for general billing, and specific QR code generation for billing with fixed prices and descriptions.

The app is 100% secure because all keys are stored only on the user's device. It does not depend on the internet, so it can be used offline. Other features include the ability to verify any QR code's validity and details, register products and services for quick billing, and check the data of PIX billing with due dates. The app also provides official content from the Central Bank of Brazil about the PIX payment system to answer any related questions.

The app is user-friendly and has a clean interface, making it easy to navigate. However, it is important to note that the app can only manage previously registered keys and generate QR codes. All financial transactions and confirmations must be made in the corresponding banking institution.

Overall, PIX POX - Chaves Cobranças is a useful tool for those who use PIX frequently and want an easy way to manage their keys.