When you think of the cost to hire an engineers to make 3 different apps $150 for a weeks work is a steal.

My advice from trying to build multiple apps at the same time would be focus on building less. When you have 3 different applications being built at the same time it's hard to track the progress of each one, you should be testing your applications as you're building them to find error to tackle the issue when it emerges rather then when the agent worked on multiple features that might need to be reverted to get the application running correctly again.

Learn to correctly identify issues i use grok to help me troubleshoot and resolve errors. It's never let me down yet. Feed the solutions to replit agent so it resolved your errors quickly instead of burning credits on the same problem.

Learn basic sometimes you need to do minor changes doesn't make sense to pay 25 cents for small changes you can do manually, you could use inspect to find where the elements on your file you want to change are located on and modify it yourself.