The average person spends almost four hours on their phone each day, scrolling through apps that offer endless entertainment and information. Rest of World has written extensively about the traditional and non-traditional ways people use apps like WhatsApp, Signal, and even Zello. Let’s see how closely you’ve been paying attention.

1. Which of the following is Brazil’s most popular social media platform?

André Vieira/Agentur Focus/Redux
  1. Instagram
  2. WhatsApp
  3. YouTube
  4. Facebook

2. You can do all of the following on WeChat, China’s most popular app, except:

A photo of two women standing next to a window displaying QR codes
Gilles Sabrie/Bloomberg/Getty Images
  1. File for divorce
  2. Make a doctor’s appointment
  3. Pay for a cup of coffee
  4. Gamble on sports

3. How many countries is the educational app Duolingo used in?

A photo of a person using the app Duolingo on their cell phone
Duolingo
  1. 55
  2. 84
  3. 193
  4. 167

4. What is the most popular dating app in Algeria?

A photo of a man and woman talking to each other on a bench outside
Johann Rousselot/laif/Redux
  1. Bumble
  2. iHappy
  3. Tinder
  4. Muzz

5. Roblox is the top gaming app in all of the following countries except:

Roblox Filipino Catholics/Facebook
  1. Brazil
  2. U.S.
  3. India
  4. South Africa

6. GrabFood is the top delivery app in what country?

A photo of a delivery worker holding a package on the seat of his motorcycle
Muhammad Fadli for Rest of World
  1. Vietnam
  2. Nepal
  3. Venezuela
  4. Kenya

7. Which country spent the most time on social media each day in the first quarter of 2023?

  1. Mexico
  2. Kenya
  3. Belgium
  4. South Korea

8. On August 2, 2024, this country (pictured) announced plans to strongly limit VPN use, leading people to rush to download the services.

  1. Pakistan
  2. Turkey
  3. Saudi Arabia
  4. Sri Lanka

9. In which country is Snapchat most popular?

A close-up photo of a phone showing the dog filter on Snapchat
Romain Gaillard/REA/Redux
  1. Afghanistan
  2. Peru
  3. Bahrain
  4. Serbia

The answers

1. B

WhatsApp

More than 93% of Brazilian Internet users use WhatsApp. WhatsApp users in the country reportedly send four times more audio messages than any other population in the world.

2. D

With 1.3 billion monthly users, WeChat is the world’s third-most popular messaging app, behind WhatsApp and Instagram. The super-app is so important for life in China that banned users have resorted to handwritten apologies in an effort to regain their accounts.

3. C

At the end of Q2 in 2024, 8 million users across 193 countries were paid subscribers of Duolingo. First launched in 2012, it now sees 103.6 million monthly active users.

4. D

First launched in 2015, Muzz, a Muslim marriage and dating app, is the most popular dating app in Algeria. The platform now has over 10 million users worldwide.

5. C

Roblox, a platform that offers millions of online games, sees over 79.5 million daily active users worldwide.

6. A

Two-thirds of Vietnamese respondents in a 2023 survey said that GrabFood was their go-to delivery app. The second most-used app, according to respondents, was Baemin, which accounted for 23% of the responses. Baemin has since stopped operating in Vietnam.

7. B

Kenyan internet users spend an average of three hours and 55 minutes per day using social media — more than any other country in the world.

8. A

The move, announced by the chairperson of the Pakistan Tele­communication Authority (PTA), was seen as a response to an earlier spike in VPN usage after X was blocked in the country in February. Back then, VPN providers had said downloads jumped 130%–400%.

9. A

Snapchat is currently ranked fourth among free iPhone apps in Afghanistan, 25th in Bahrain, 66th in Peru, and 17th in Serbia.