Use 'scrape by' to describe a tough situation where someone struggles financially.

Living Context

Implies significant effort to cover basic living expenses due to low resources.

Financial Struggle

Suggests a person is doing the minimum to stay afloat in life or maintain their status.

Use when referring to achieving the bare minimum in an academic or skill-based context.

Expresses a situation where someone achieves a goal, but only just, without much margin.