YouTube
PINS
YouTube
GOOGL
Pinterest (PINS) vs YouTube (GOOGL) apps
Pinterest and YouTube are content discovery platforms that categorize in app stores as "Photo & Video apps", as opposed to "Social". Depth of engagement (Time Spent Penetration, Average Minutes per daily user) is equally as important for Pinterest and YouTube, as it is for Social apps. YouTube is one of the leaders, alongside TikTok, when it comes to Average Minutes per DAU, given its nature as a content streaming platform.
Pinterest vs YouTube: cross-app usage

Percent of Youtube users using Pinterest
Percent of Pinterest users using Youtube
Percent of YouTube users that use Pinterest
Percent of Pinterest users that use YouTube
Pinterest vs YouTube app relative size analysis (Monthly users, US)

YouTube
Notes
YouTube was 2x the size of Pinterest in the most recent month, compared to 2.5x its size a year ago.
Additional app insights
Competitive intensity among top Social Media apps
Explore Social Media market dynamics and user engagement levels of top apps in the category.