This is a really nice product you've got there! I actually have another related issue: as an English-speaking immigrant living in a non-English-speaking European country, I get a lot of bills and invoices in the local language. It would be really cool for someone like me to have a translation layer on top of this. I don't know if an individual like me would go past your free plan though.
1. You make a good point about languages. In fact, it seems a lot of my users are European or Latin American, so this would suit a good portion of the user base. I‘ll certainly look into adding better language support.
2. The free plan is 5,000 kB which equates to 30-100 documents (not many, I admit) assuming your PDFs are 50-150 kB. However, it is worth noting that the paid price is prorated to groups of 100 kB, each group costing only $0.01. So every document you upload outside the free plan would cost $0.005-$0.015 per month, assuming the same document sizes as I mentioned before.
