You get what you pay for, is the old adage! 
I’m not experienced in running Streamlit apps on Google Colab, but believe it’s possible, and the claim is there aren’t any perf. limits. Search on the web for “deploying streamlit on google colab” and look at @Jesse_JCharis’s article here.
@randyzwitch has just posted this Deployment Guide Wiki with quite a few alternatives.
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