34 Must-Have Apps

Most Popular Apps of All TimeNewsweek
34. Clash of Clans: Now a veteran of the multiplayer strategy game scene, it's still in the top 10 most downloaded game apps of 2017.Supercell

Apple's App Store celebrates its 10th birthday in July, marking a decade since the revolution of easily downloading software to mobile devices. Google's equivalent, first known as the Android Market, now Google Play, launched a few months after Apple's in October 2008.

Steve Jobs called the opening of the app store the "biggest launch of my career," predicting that the use of apps would come to differentiate the iPhone from all other mobile devices, including its biggest rival at the time, the BlackBerry.

As so often was the case, Jobs's prediction came to pass. The App Store went from strength to strength. When it first opened its virtual doors, users could find 552 applications ready and waiting for download, a quarter of which were free. By March 2017, there were 2.2 million apps on offer from Apple, and 2.8 million via Google Play. The average smartphone owner uses nine apps per day and 30 per month, according to App Annie.

While many of the earliest apps have been consigned to the virtual history books, others continue to thrive. Early adopters of Facebook, for example, could find an app in the store on the day of launch, and it remains by many metrics still the most popular app in the world.

Newsweek's gallery takes a look at some of the other big hitters in the world of apps, drawing on the most recent published lists from both the Apple App Store and Google Play as to their most popular downloads.

We've looked at the most popular apps for everyday social interaction, news, and web browsing, as well as games and entertainment.

Analytics companies Statista and comScore also track data related to app use, with the industry website Business of Apps crunching the numbers. 

How many of the following do you use? How many have you never even heard of? How can you live without them?

Check the complete slideshow to know more about them.

33. slither.io: Even the earliest cellphones had a version of Snake, where a slithering block of pixels grows longer the more it eats. This is a massive multiplayer version. slither.io
32. Piano Tiles 2: Ebony and ivory, living together in perfect (app) harmony.Piano Tiles 2
31. Super Mario Run: Nintendo's popular all-action plumber was a superstar long before the first app was ever invented, but this game marks his most popular appearance on mobile devices in 2017.Nintendo
30. Candy Crush Saga: The puzzle game sensation, which has even spawned a spin-off TV show.Candy Crush Saga
29. 8 Ball Pool: All the fun of a dive bar on your phone. OK, some of the fun of a dive bar on your phone.8 Ball Pool
28. Clash Royale: A "fast-paced brawler where you collect cards and duel players in real time," according to its fan wiki, and the fourth most downloaded game app in 2017.Clash Royale
27. Honor of Kings (known outside China as Arena of Valor): China's most popular gaming app, with an estimate 200 million monthly players, according to The Verge. Tencent Games
26. My Talking Tom: Cheaper, cleaner and more talkative than a real cat, this Slovenian-developed virtual pet app is a global smash.My Talking Tom
25. Subway Surfers: Most downloaded game app in 2017.Subway Surfers
24. SHAREit: File transfer service, which claims to be 200 times faster than Bluetooth for transferring files from one WiFi-enabled device to another.SHAREit
23. UC Browser: Developed by the Chinese Alibaba Group, UC is a web-browser designed for slow internet connections. It was the sixth most popular non-game download in 2017, according to Sensor Tower.Alibaba
22. Lyft: Chasing down Uber as the most popular cab-hailing app.Lyft