What app can I use to send money to Brazil?

I'm curious, could you recommend an app that allows me to send money to Brazil? I'm looking for a secure and reliable platform that offers competitive exchange rates. Also, it would be helpful if the app provides easy-to-understand instructions for first-time users like myself. Is there such an app available that you can recommend? And, how does it work? Is there a fee involved, and how long does the transfer usually take? Additionally, I'd like to know if the recipient in Brazil needs to have a specific account or app to receive the money. Could you please enlighten me on these matters?