Kopster

Finally validated the technical part and started building an MVP. The trick is that the hardest part of the solution, parsing PDF invoices, is already done by a Lithuanian API service, Ivesk.lt. All I need to do is get an attachment from the user's account, send it for parsing, and store the parsed data. When the user opens a page for filling the data, they will be able to insert it with a single click.

If/when the project becomes bigger, I'll probably have to build my own system for parsing invoices, but for now I'm so lucky to have it!

I have confirmed my hypothesis that freelance accountants spend their days copying data from PDF attachments that their clients send them and pasting them into online accounting systems.

Yes, I know that a single interview is not enough for proper validation of a "big" startup, but it might probably be enough for a side project that aims for 100 paying users.