I'm glad you liked it! I thought from the start to ask for a price that I myself would pay. The files are stored locally, so there's no cloud involved at the mo

I'm glad you liked it! I thought from the start to ask for a price that I myself would pay. The files are stored locally, so there's no cloud involved at the moment. The attachments are stored as files in a directory, while annotations, notes and the folder structure are written to a SQLite database. I haven't made commitments yet regarding the database format, but I could look into documenting and creating compatibility requirements for it. Is that something you need?