The Apple logo is pictured inside the newly opened Omotesando Apple store at a shopping district in Tokyo June 26, 2014. Picture taken June 26. [Photo/Agencies]

BEIJING - iOS quarterly downloads grew 30 percent between Q1 2014 and Q1 2015, meaning China surpassed the US and is now the world leader in iOS downloads, according to App Annie, a mobile analytics company headquartered in San Francisco.

Danielle Levitas, senior vice-president of App Annie, revealed the news at the Global Mobile Internet Conference (GMIC) in Beijing on Wednesday.

Download growth translates into iOS App Store revenue gains. From Q1 2014 to Q1 2015, revenue in China grew 90 percent compared to 30 percent in the US and 50 percent in Japan. "China grew more quickly to narrow that gap," she said.

Earlier this week, Apple released its earnings report, announcing that international sales accounted for 69 percent of the revenue for the quarter, reflecting the high demand in emerging markets such as China for Apple products.

According to Levitas, Apple has dramatically expanded distribution in China. As of April 25, China has 19 Apple Stores across 10 cities, up from just 8 in only Beijing and Shanghai in October 2013.

China boasts the world's most Internet and cell phone users. There were 649 million Internet users by the end of 2014, and some 557 million used cell phones to go online, official data showed.

"China, a mobile-first country, has seen smartphone exceed PC adoption," Levitas added, "Chinese consumers want large-screen smartphones with longer battery life."

Though app stores as a whole are marching forward, contrasts lie in different markets. Levitas highlighted that Android's Google Play led the Apple's iOS App Store in app downloads by nearly 70 percent in Q1 2015, while iOS maintained a strong monetization lead, generating close to 70 percent more revenue than Google Play in the same period.

"Emerging markets like Mexico, Turkey, Brazil, and Indonesia were the primary drive of Google Play's growth," she explained.

She also predicted that strong growth would continue across emerging markets, especially as Andriod phones below $200 expand opportunity beyond mature markets.

In terms of categories, games dominated, followed by lifestyle and photo & video, while education is closing in. Education app downloads grew 25 percent on downloads and 35 percent on revenue between Q1 2014 and Q1 2015, according to Levitas.

In Q1 2015, education saw the second highest absolute revenue gain over Q4 2014, after games, ranking among the top five Google Play categories by quarterly revenue.

"It was boosted from language learning apps like Duolingo and Babbel, brain training apps like Lumosity, and MOOC platforms like iTunes U and TED," she noted.