Why do most people stop using expense tracking apps after a few weeks?

While building Vitmora, one thing became really clear to me:

Most people don’t stop tracking expenses because they don’t care about money.

They stop because the workflow eventually starts feeling like effort.

Too many forms.

Too many manual steps.

Too much friction for something that should feel simple.

I’ve been thinking a lot about how personal finance apps could become more conversational, lightweight and natural to use over time.

Curious how others here think about this:

What’s the biggest thing current budgeting or expense tracking apps still get wrong?