In this article +
"White noise for sleep" had been stuck in the low 30s for six weeks. The phrase appeared only once, deep in the long description.
The change
We moved the exact phrase into the short description and the first sentence of the long description. Nothing else changed: same icon, same screenshots.
The result
Nine days later the keyword reached #11 in India and #14 in the US. Without daily tracking we'd never have known which change did it.