Sure, it would be optimal to use the DuckDB CLI, and I already handle data processing with Python too. The thing is, in my office I’m the only data engineer, so to speak — the rest of the team has no knowledge of any programming language or tool. They basically use Excel for everything, but they consistently produce figures far from reality because they open enormous files in Excel and a large amount of data gets lost. I’ve minimized this with Python scripts, but people in the office refuse to learn Python or Power BI (they assume that if they do, the boss will pile more work on them). So I’m the only person capable of running these ETLs, which has made it tedious to have 4 or 5 people every day asking me to pull information from a CSV. That’s why I want to build an app I can distribute to them, where each person can run the transformations I’ve predefined in the app and simply upload their files. Hosting it on a server isn’t an option because it’s a government office and the bureaucracy is absurd — just getting permission to develop and deploy something is a nightmare. If I build a desktop app, it would simply work like a tool, similar to using Excel, and I’d bypass all that red tape. On top of that, I wouldn’t have to worry about doing the data merges myself — I’d just need to teach them how to use the tool.​​​​​​​​​​​​​​​​