The 24 largest apps by reported audience

How to read the app audience table

This is not a like-for-like ranking, because no one has a single consistent global count of active users. Every row is the company’s own disclosure: most are monthly, Meta only publishes Facebook daily actives, OpenAI only publishes ChatGPT weekly actives, and YouTube and TikTok publish nothing official, so their rows use advertising reach. A daily figure is always smaller than a monthly one, a weekly one sits in between, and reach can exceed both — so read the order as scale, not as an audited comparison. Nothing here is converted: a weekly number is not multiplied by four, and a daily number is not divided by 0.6 to manufacture a monthly one. That would turn an honest gap into a precise-looking error.

Read the basis column top to bottom and something more interesting than the order appears: very few companies publish monthly actives. Meta gives daily actives for Facebook and monthly for Instagram; OpenAI gives only a weekly figure; Reddit reports weekly; Uber reports monthly active platform consumers, not users; YouTube and TikTok publish nothing official at all. Nobody is hiding — each metric serves a business definition, and definitions built for advertisers rarely suit researchers. The other pattern is that an app has to travel: the United States supplies 12 entries and China 7, while the rest of the table belongs to single-market products from Japan, South Korea, Vietnam and Sweden that are close to irreplaceable at home and rarely seen abroad.