Founder here. Happy to answer any questions about how it works or why I built it this way. Honest feedback especially welcome.

I don't know that knowing whether the potential client has read your proposal has any bearing on the actions you would take or the decisions you would make, so it seems like noise.

Regardless of whether the potential client has read your proposal, when you don't hear anything for days, you have to follow up, person-to-person. If you don't get any responses, that is a response: they're just not that into you or your proposal.

As a French reader, I read this as "ApéroCraft" ("apéro" means "Pre-dinner drink" here)