Doubly especially when you're a developer that can handle a proper API themselves, and do a better job at it than all the startups that will pop up to sell you a budget management service, nothankyou.

All these years I wanted a widget that would display three numbers and a graph on my phone's home page. A total sum of money on all my non-savings accounts across all banks, the amount I already spent today, and a "burndown graph" for the month showing how much of this month's income I've already spent. I can write that widget myself, and I will do a better job than any of the startups - by virtue of not needing to include tracking, telemetry, not needing to make it a webview rendering React because $multiplatform, etc. But I can't do this, because the API endpoints needed don't exist unless you're a company with a large enough budget to afford it.