Can you let your application fan-out instead of SNS fan-out?

I currently have an application that sends messages to the SNS topic. And there are three SQS queues that are subscribed to the topic. I am trying to eliminate the usage of SNS from my architecture because of cost. Is it possible that my application itself acts like SNS and fan-out messages to SQS without the usage of SNS? If there are any drawbacks, what are those?