Pandora and Spotify were among the Top 5 earners of in-app revenue last month.

According to US-based app tracking firm App Annie, Pandora was the No.2 revenue-earner on both iOS and Google Play for the month, although the chart does not include video game apps.

The internet radio service’s Google Play position represents a lift from No.5 in July.

Spotify’s August in-app purchases saw it move from No.14 in July to No.7 in August, with the streaming service having activated ...