As part of any strategic market analysis, estimating the size and activity of a platform provides crucial insights into user engagement, infrastructure requirements, and monetization opportunities. Let’s take WhatsApp as a case study
To estimate the number of WhatsApp messages sent per day, we will follow a top-down market sizing approach similar to the one used in the previous example. This structured method breaks the problem into logical steps, each supported by relevant data or assumptions. The goal is to approximate the volume of WhatsApp messages sent daily based on global population data and user behavior.
Steps
Step 1: Start with the global population
The world population is currently estimated to be around 8 billion people. This will serve as the starting point for our calculations.
Step 2: Estimate the percentage of people with access to mobile internet
Approximately 65% of the global population has access to mobile internet, which is necessary to use messaging apps like WhatsApp. This figure gives us the total addressable market for WhatsApp.
8 billion×65%=5.2 billion people with mobile internet access
Step 3: Estimate the percentage of mobile internet users who use WhatsApp
WhatsApp is extremely popular globally, especially in regions like Europe, Latin America, India, and parts of Africa. It is estimated that around 40% of mobile internet users are active WhatsApp users. This will help us narrow down the base of people who actually use the platform.
5.2 billion×40%=2.08 billion WhatsApp users
Step 4: Estimate the number of messages sent per user per day
On average, a typical WhatsApp user sends around 50-60 messages per day. For this estimate, we will use the midpoint of 55 messages per user per day.
2.08 billion users×55 messages/day=114.4 billion messages/day
Step 5: Multiply to determine the total number of WhatsApp messages sent daily
By multiplying the number of active users by the average number of messages each user sends, we estimate that approximately 114.4 billion WhatsApp messages are sent globally every day.
Conclusion
Using a top-down market sizing approach, we estimate that around 114.4 billion WhatsApp messages are sent each day worldwide. This estimate is based on global population figures, internet accessibility, WhatsApp’s user base, and average messaging frequency. While this provides a reasonable approximation, the number can vary depending on regional usage patterns or platform-specific data.
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